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Year : 2006  |  Volume : 40  |  Issue : 1  |  Page : 16-23
Intertrochanteric fractures

Post Graduate Institute of Swasthiyog Pratishthan, Extn. Area, Miraj, Maharashtra, India

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How to cite this article:
Kulkarni G S, Limaye R, Kulkarni M, Kulkarni S. Intertrochanteric fractures. Indian J Orthop 2006;40:16-23

How to cite this URL:
Kulkarni G S, Limaye R, Kulkarni M, Kulkarni S. Intertrochanteric fractures. Indian J Orthop [serial online] 2006 [cited 2017 Sep 10];40:16-23. Available from: https://ijoonline.com/text.asp?2006/40/1/16/34069
Intertrochanteric fracture is one of the most common fractures of the hip especially in the elderly with porotic bones, usually due to low-energy trauma like simple falls. The incidence of intertrochanteric fracture is rising because of increasing number of senior citizens with osteoporosis. By 2040 the incidence is estimated to be doubled. In India the figures may be much more. Problems of these fractures are (1) association with substantial morbidity and mortality (2) malunion (3) implant failure, cutout of head, and penetration into hip. (4) great financial burden to the family (5) associated medical problem like diabetes, hypertension.

Historically Smith Peterson nail and Jewet nail were introduced in the 1930's. In the 1950's and 60's Pugh and Massie modified sliding devices and dynamic hip screw (DHS) were developed. Kuntscher [1] , Zickle, Grosse [2] , Kempf and Russel and Taylor [3] developed intramedullary nail (IMN) with sliding hip screw (SHS). Recently second generation nails have been developed. Some have 2 screws to be inserted in the head e.g. proximal femoral nail of AO.

It is universally agreed that the treatment of intertrochanteric fractures is stable internal fixation as early as possible. Stable fixation is the keystones of successful union of trochanteric fractures. Factors beyond the control of surgeon for successful treatment are: (i) fracture geometry and stability, (ii) bone quality, (iii) comminution. Factors under the control of surgeon are: (i) good reduction, (ii) proper choice of implant, (iii) proper surgical technique, and (iv) availability of modern operation rooms, entire set of implants, instrumentation and image intensifier.

The factors most significant for instability and fixation failure are: (i) loss of posteromedial support, (ii) severe comminution, (iii) subtrochanteric extension of the fracture, (iv) reverse oblique fracture. (v) shattered lateral wall (vi) extension into femoral neck area and (vii) poor bone quality. Osteoporosis is particularly important in the fixation of proximal femoral fractures. This can be measured by Singh's index and bone densitometry.

Mechanism of Injury: 90% or more of hip fracture occur in the elderly from a simple fall in the house due to direct or indirect forces. Five factors contribute to hip fracture. 1) Person landing on the hip (2) Inadequate reflexes (3) Absence of local shock absorber - Muscles and fat around the hip and (4) Osteoporosis. Currently more attention is paid to prevention of hip fracture. Hip fracture can occur from cyclic mechanical stresses resulting in stress fracture.

   Classification   Top

Commonly, fractures are described by the number of "parts"(fragments) and instability. The presence of certain fracture characteristics such as displaced postero-medial fragment shattered lateral wall, indicate instability.

There are several classifications [4],[5],[6],[7] . Evans [4] has based his classification on stability of the fracture. Jansen has modified Evans classification into three groups. (1) Stable (2) Unstable (3) Very unstable. Gotfried [5] and Kyle [6] each have added a new variety of intertrochanteric fracture. Using Evan-Jansen's and AO/OTA classification and adding the new varieties described by Gotfried [5] and Kyle [6] , authors present a new treatment oriented classification.

Type I : Stable fractures consists of nondisplaced, stable intertrochanteric fractures without comminution. Fractures are stable, minimally comminuted and displaced. Reduction of these fractures leads to a stable construct. Stable fractures heal well with any fixation device. These can be very well treated by dynamic hip screw (DHS) with excellent results.

Type I A is undisplaced, 2 stable piece fracture, type I B is displaced, reducible, stable, 2 piece fracture, Type I C is displaced, but reducible, stable fracture with a small piece of lesser trochanter.

Type II- Unstable fractures: These, the so-called problem fractures are unstable and are 3 piece or 4 piece fractures with a large displaced postero-medial fragment which includes lesser trochanter. Gotfried [5] has shown that shattered lateral wall is an unstable fracture. These above described unstable fractures can be treated with DHS with some modification or IMN with SHS.

Type III : Very unstable fractures : this fracture type includes 1.reverse oblique 2.trochanteric fractures with subtrochanteric extension 3. comminuted trochanteriic fracture with extension into neck of the femur (Kyle variety).

These very unstable fractures require different kind of treatment than DHS. In these fractures DHS gives poor results.

The lateral trochanteric wall: Gotfried [5] has described the important lateral trochanteric wall as a key element of instability. The lateral trochanteric wall acts as buttress to the proximal fragment. A shattered lateral wall allows excessive collapse of the proximal fragment over the sliding screw. Excessive collapse results in pain, reduced mobility of hip, inability to walk sometimes nonunion and failure. It is important to prevent lateral wall fracture during surgery. If fractured, it should be reconstructed by tension band wiring or lateral buttress plate or lag screws.

Unusual fracture pattern: Basi-cervical neck fracture may be included in intertrochanteric fracture. This fracture is prone to avascular necrosis of the head of the femur. There is also rotational instability. Therefore, additional derotation screw should be used.

Trochanteric fracture associated with fracture of the shaft of femur. These two fractures may be treated by Recon, long Gamma or proximal femoral nail. Pathological fracture forms a separate variety [8],[9],[10],[11] .

Reverse oblique fracture: Use of DHS in reverse oblique fracture may cause excessive collapse leading to failure. Excessive collapse occurs due to shearing forces and to powerful muscles acting on fragments. In fracture with shattered lateral wall, treated by DHS excessive collapse occurs due to loss of buttressing effect of lateral wall.

Excessive collapse: Recently it has been shown that excessive collapse results in 1. Functional deficit - reduced mobility of hip. 2. Pain resulting in inability to walk and nonunion. 3. Implant failure . Excessive collapse occurs due to excessive sliding as in reverse oblique when treated with D.H.S., lateral wall fracture, severe instability due to comminution.

Excessive collapse may be prevented by trochanteric plate, double barrel plate, reconstruction of lateral wall and IMN.

Choice of implant for intertrochanteric fractures

  1. Dynamic hip screw.
  2. I. M. nailing with sliding hip screw
  3. DCS or 95 blade plate (rarely used in reverse oblique fracture)
  4. External fixator
  5. Arthroplasty- Bipolar or total hip replacement.

Dynamic hip screw : (DHS)

The use of static implants with a fixed angle at nail plate junction like Smith-Peterson nail, Jewett nail. AO 95 degree blade plate, Thronton, McLaughlin nail plate, etc. are no longer justified since dynamic screw fixation has given uniformly good results due to controlled impaction and stable contact of the fragments. The sliding devices have gained universal popularity as the fixation device for all intertrochanteric fracture. DHS is the gold standard [Figure - 2].

Modifications of DHS:

1. Medoff''s plate [12] :
Medoff has designed a device that allows axial compression. Medoff recommends the axial compression for unstable fractures.

2. Trochanteric stabilizing plate: The trochanteric stabilizing plate construct buttress the greater trochanter and prevents lateral displacement and excessive fracture collapse which results in limb shortening.

When the lateral wall is shattered it is reconstructed using a lag screw or tension band wire passing through tendon of abductor muscles. Trochanteric stabilizing plate is useful when lateral wall is fractured.

3 Augmentation [13]: Tricalcium phosphate cement or Norian SRS is injected into the void in the postero medial area in unstable fractures. This increases stability.

4. Hydroxyappetite (H.A) coated screw: achieves better fixation in osteoporotic bone.

Surgical technique of DHS: Patient is kept in supine position on a fracture table. It is reduced by traction, slight internal rotation (occasionally external rotation) and by rotating the proximal fragment with the help of guidewires or by lifting the distal fragment up with a bone lever. If there is a posterior sagging it is lifted upward by hohman spike. A crutch can be used to elevate the sagging femur. A slight valgus position is preferred. If closed reduction is not satisfactory, open reduction is performed.

Lateral incision is taken starting from the tip of the greater trochanter about 7cm downwards. While exposing the lateral surface, the vastus lateralis should not be split longitudinally. This maneuver deneravates the posterior fibers and is associated with greater bleeding. Entire vastus is elevated subperiosteally. Guidewire is passed in the dead center of head and neck in both anteroposterior and lateral views, the so-called "bull's eye" or center-center placement which is the optimal position. Sliding screw is placed with the tip within 10mm of the sub-chondral border.

Tapping of the femoral head to cut screw threads prior to insertion of the screw is done in all but the most osteoporotic bone. More the barrel covers the distal portion (at 2/3 of barrel) of screw, better it is biomechanically. Hence using long barrel and 32mm thread length screw is preferred to prevent implant failure.

In basal fracture an additional lag screw is inserted to prevent rotation.

Open Reduction: Open reduction is rarely required when closed maneuver fails. Limited exposure of the fracture is performed. In comminuted fractures, the greater trochanter fragment is pulled superiorly to allow direct visualization of the fracture.

Surgical precautions which must be observed in DHS [6]

  1. Ascertain that there is no impingement of the labia or scrotum from the fracture table post. Achieve near anatomic reduction in both anteroposterior and lateral views.
  2. Satisfactory reduction is crucial for fracture union.
  3. Use 135 ° angle guides to insert the guide pin.
  4. Screw in the dead center of femoral head.
  5. Observe TAD.
  6. Use a standard (long-barrel) plate and 32mm thread length screw.
  7. Impact the fracture statically during surgery.
  8. Minimum of 4 screw fixed in the distal fragment. If bone is osteoporotic 5 screws are needed.
  9. Reconstruct lateral wall if fractured
  10. Start weight bearing to tolerance on day 1, if fixation is stable.

Miraj sliding Screw:

We have modified the Richard's dynamic hip screw to make the procedure simpler. More static compression is achieved when required. Following are the modifications.

While the proximal end of screw has coarse threads as in the standard device, its distal end is also threaded. The distal threaded end passes through the nut, instead of the nut entering into the distal end of the screw. When Richard system or DHS is used, the distal end of the screw has to be at least 1 cm away from the cortex to make effective compression of the fragments of inter-trochanteric fracture (however, dynamic compression during the postoperative period is possible). Therefore, the screw must be of exact length. The gap between the two major fragments, especially posteriorly, makes the measurements of the screw inaccurate. If the distal end of the DHS touches the cortex, then there will be no static compression. When Miraj sliding screw is used, even if the end of the screw is out of the femoral cortex, one can compress the two fragments [Figure - 3]. With larger nut and hexagonal head, one can apply stronger force to compress the fragments. Good static compression is necessary for the cancellous fragments to make the fracture stable, and unite early.

If the barrel touches the screw thread, the system acts as a fixed angled-plate. Even though it is a fixed angle system, penetration into the acetabelum will not occur because of the blunt tip.

Postoperative management after D.H.S. fixation [14]

Most of the elderly patients are allowed immediate weight bearing as tolerated. If there is severe osteoporosis, Singh Gr. I, II, or if the implant is insecure, and in type IV fractures (with subtrochanteric extension). Weight bearing is delayed.

Advantages of sliding screw:

DHS offers the advantages of a simple, predictable surgical technique, and a long clinical history of successful results.

  1. Controlled impaction and progressive stabilization. The sliding screw guides the proximal fragment into a stable position. Settling of fracture fragments occurs. Screw sliding in the barrel depends on: (i) fracture geometry, (ii) quality of reduction, (iii) position of screw in the head and neck of femur, (iv) angle of the barrel and plate. (v) integrity of lateral wall.
  2. The shearing force on the femoral head being transferred to the axis of the sliding screw, hence producing a compressive force. Because of the bone growth into the threads of the screw, cutting of the implant out of the head and neck is rare (except in Singh's Gr. I osteoporotic bone).
  3. Because of the blunt tip, the implant does not penetrate into the acetabulum.
  4. With tightening of the nut, a good static compression occurs. As the fracture is in the cancellous bone, compression enhances the stability. Dynamic compression occurs during the post-operative period as the patient bears weight on the limb.
  5. Because of less pain and good stability, it allows early mobilization and early weight bearing.
  6. There is reduced reoperation rate.
  7. Incidence of breakage or separation of the components is much less.

Disadvantages of sliding screw:

Despite these theoretical and biomechanical advantages, sliding hip screw constructs have limitations. Excessive collapse results in failure.

  1. Sliding of more than 15mm leads to a higher prevalence of fixation failure. Rha and associates found that excessive sliding was the major factor causing failure of fixation.
  2. Medialization of the femoral shaft by greater than one third of the diameter of the femur is associated with a seven fold increase in fixation failure.
  3. Cutout of implant may occur in severe osteoporotic bone and wrong implant placement.
  4. Failure rate of D.H.S. is about 5%.

Pitfalls in using DHS

  1. Insufficient or excessive sliding length available between the screw and barrel.
  2. Jamming of screw in the low angle barrel plate. (120 or 125 angle).
  3. Majority of failure due to poor positioning of screw. TAD > 25 and screw not in the center of head.
  4. Lateral wall fracture. Fracture of lateral wall during surgery.
  5. D.H.S gives poor results in reverse oblique fracture.

Advantages of central placement of the implant:

  1. The placing of the lag screw in a central position avoids the potential complication of a peripherally placed screw, which may appear to be within the femoral head on both the AP and lateral views at operation, but may lie partly outside the femoral head as seen in tangential view.
  2. Central placement prevents penetration of the joint.
  3. Centrally placed screw is in the crossing of the trabeculae, which is the strongest part of bone. Therefore the purchase is better.
  4. If centrally placed screw length can be longer-more number of threads can be engaged in the strongest part of bone in the femoral head.

Tip apex distance [15] :

The tip to apex distance has been described as a guide to accurate screw placement, and should be less than 20 mm. Risk of cutout and is easily measured intra-operatively. Risk of fixation failure approaches zero if TAD<20mm. Risk increases rapidly as the screw is placed more peripherally and shallow.

The barrel plate angle is determined from the normal side.

Optimum ideal angle is 135 degree, which is most commonly used. There appears to be no evidence to suggest that any other angle is superior. If the screw is placed inadvertently in the superior half of the head, then a higher angled blade plate (140 degree) may be required. If the screw is placed in the lower half of the head, barrel and plate is less than 135 degree, usually 130 degree.

Mechanical failure rate of the fixation is decreased by anatomic reduction, and by placing the implant centrally within the femoral head. The success of fixation is dependent much more on the technical expertise of the surgeon than on the bone quality of the patient.

Biomechanics [16],[17],[18]: Strong muscle forces act on the proximal and distal fragments. The proximal fragment is displaced proximally and laterally. Distal fragment is pulled up and adducted, resulting in varus external rotation deformity if untreated.

Barrios et al [18] demonstrated that the forces applied to the femoral head and proximal femur with activities such as lifting the leg and getting on and off a bedpan often equal or exceed the load applied during protected ambulation.

Intertrochanteric fractures occur through cancellous bone, which has an excellent blood supply. The fracture unites promptly, even if left untreated albeit with varus deformity. This results in short leg gait, limp, pain, and future osteoarthrosis.

In majority of the cases bones are severely porotic with poor implant holding capacity, which may result in implant failure - bending, breaking, pullout of the screws and breakage of the screws heads.

Fracture geometry and stability: Three part or four part fracture with displaced large posteromedial fragment which includes the lesser trochanter is very unstable. Lesser trochanter is a key to evaluating instability. However, the mere presence of a lesser trochanteric fragment does not constitute instability. The size and displacement of the fragment are the critical factors in this evaluation. Large forces act on this portion of the femur. Reconstruction of posteromedial wall by bone graft or augmentation by calcium phosphate cement or by a lag screw is necessary.

Timing of surgery: Operation should be done as soon as possible after the medical condition is improved, because delay in operation is associated with complications18-20. Most of the patients were operated within 48 hours. In some delay was in making the patient medically fit by treating diabetes, hypertension, cardiac problem etc.

Intramedullary nail

IMN with SHS is designed for insertion through greater trochanter. It has a valgus offset of proximal nail which is wider to allow lag screw passage. It can be statically locked and is more expensive than sliding hip screw.

The unstable cases can be helped by medullary fixation as there is more failure of D.H.S. Definitive indications for the intramedullary nail devices are: (1) Reverse oblique fracture (2) Intertrochanteric fracture with subtrochanteric extension. Relative indications are 3 part or 4 part unstable fractures.

Proximal femoral nail (PFN) developed by AO has two sliding screws. Advantages of two sliding screws are:

  1. More stable fixation
  2. Preventation of rotational deformity. The disadvantage is on weight bearing the proximal screw may penetrate into the hip. So this screw should not be inserted into the head.

Operative technique of intramedullary nailing (I.M.N.):

Using image intensification a closed reduction is performed to as near an anatomical position as possible.

4 cm incision is made just proximal to the greater trochanter. A Awl is positioned on the medial tip of the greater trochanter and advanced within the canal to the level of the lesser trochanter. Guide rod is advanced in the medullary canal and the canal is reamed. Once the nail is seated, the targeting device is used to make a 2cm stab incision. Guide pin is advanced into the femoral head. Correct length of pin is measured by the calibrated reamer. Screw is placed in the both center of the head or slightly inferiorly within 5 to 10mm of subchondral border. Distal locking screws are placed through the zig.

It is preferable to have the nail allowing for use of more angles (125-135), depending on patient anatomy, achieved reduction, and guide pin placement. Different lengths and diameters could help to match more precisely the nail to the patient anatomy (including build in anterolateral curvature).

The nail should be designed for introduction through more anterior entrance portal on the greater trochanter (base of the neck is situated more in front on sagittal projection) than in "piriformis fossa entry portal" antegrade nails (on lateral view entrance is more posterior). Anatomic curvature, rotation, and blunt nail tip will help to avoid distal cortex anterior penetration.

If two C-arms are available, they are positioned at 90-90 degrees angle to each other this could lessen irradiation time up to 60 percent and significantly speed up the procedure.

It is better to put at least one screw in dynamic slot (controls rotation and allows some axial impaction). In very unstable subtrochanteric fractures, two distal locking screws will provide better fixation. Short nails have jigs for easier locking, long nails need "free-hand technique".

If fracture line extends distally to the lesser trochanter more than 3 cm, long nail should be used (ending in distal metaphysis). Distal locking trough the slot, not close to nail tip provides rotational stability allowing at the same time some axial dynamization (if desired). Two distal locking screws will provide more rigidity to the system.

Advantages of intramedullary nail


  1. A closed reduction and less soft tissue dissection, therefore more biological fixation.
  2. Shorter surgical time.
  3. Less blood loss.
  4. Improved early patient mobility at 1 and 3 months postoperatively


1. The nail also has a shorter lever arm, which decreased the tensile strain on the implant and reduced the risk of mechanical failure. It is subjected to lower bending moment due to their intramedullary location. It is a load sharing device, allowing early weight bearing.

2. Controlled fracture impaction is maintained.

Disadvantages of intramedullary nail: Femoral shaft fracture is a complication of the use of first-generation intramedullary nails, 5%. This may occur during or after surgery. Because of the high implant stiffness, high hoop stresses, created by mismatch in implant size and canal diameter have contributed to nondisplaced fractures during nail insertion, which may propagate after weight bearing. This is particularly true with inadequate reaming of the medullary canal and forceful nail insertion. With newer implants, reaming and proper technique and care the fracture incidence is reduced.

1. Thigh pain has been reported to occur in 17% of patients treated with a first-generation nail, and a relationship between thigh pain and the use of two distal interlocking screws and slotted distal hole cause less thigh pain than did one with the standard interlocking holes.

2. The rate of cutout of first-generation intramedullary nails from the femoral head has ranged from 2% to 4.3%. Rotational deformity and back out of nail with resultant pain and stiffness may occur.

3. Nailing of intertrochanteric fracture is a demanding procedure and has great learning curve. Intramedullary implants are associated with unique implant related complications such as: i. haft fracture, due to stress riser effect. ii. Penetration of anterior femoral cortex. iii. Missed targeting of locking. iv. Implant disengagement

Tips for intramedullary nailing:

  1. Use second generation nail with decrease curvature length and diameter.
  2. Over ream the femoral canal.
  3. Insert implant only by hand.
  4. Meticulous placement of distal interlocking screws without creating additional stress risers.
  5. Anatomical reduction of fracture is a must.

Ender's condylocephalic nail21: Ender's nail is associated with complications like distal and proximal migration, sinus formation, persistent pain exter-nal rotation deformity, supracondylar frac-ture, high reoperation rate and nail breakage or penetration into the hip joint. Therefore it is not popular.

Asia-pacific nail[8],[9],[10],[22],[23]: Leung in Hong Kong [8] observed, that the Asian femora are smaller and there were complications. He designed Gamma AP (Asia Pacific) nail for Asian with reduced length, diameter and mediallateral angle.

Second generation intramedullary nails: Second­generation intramedullary nails have : 1. decrease in the distal diameter to 11mm. 2. decrease in the valgus offset to 4°. 3. Shortening of the length. 4. One smaller diameter distal locking hole or slot farther away from the tip. 5. less invasive technique.

The rate of clinical failures here decreased with use of second-generation nails.

The second-generation nails are (1) Proximal femoral nail. (2) Gamma nail (3)Russel - Taylor [3] recon nails & others.

External fixation: External fixation is being used at many centers in poor risk patients. With advent of epidural anesthesia, most of the poor risk patients can now be treated with sliding hip screw.

Arthroplasty [24] : The role of primary prosthetic replacement for intertrochanteric fractures remains controversial. The potential advantages of primary prosthetic replacement for an unstable intertrochanteric fracture in a patient with severely osteoporotic bone are relatively predictable pain relief, early mobilization, and revision rates may be lower. The disadvantages include the more extensive surgery, the frequent necessity to use calcar replacing, long­stem cemented implants in medically frail patients. Majority of well-reduced intertrochanteric hip fractures treated with DHS will heal predictably without complication.

Prosthetic replacement is indicated in patients with pathologic fractures as a result of neoplasm, neglected fractures with deformity and poor bone stock precluding internal fixation, or for patients in whom internal fixation attempts have failed.

Prognosis and complications: Prognosis of trochanteric fractures is good as compared to intracapsular fractures as the complications of fixation of trochanteric fractures are minimal. Failure rate of DHS depends upon its placement in neck and head. Nail breakage is rare. The complication rate of treatment related to the fracture itself is less than 10 percent. [25]

Shortening due to medialization of the shaft due to severe comminution, collapse of the fracture or varus hip is common with trendelenburg lurch and many patients need a walking stick. Occasionally, the trochanter unites with fibrous tissue and in some it may cause abductor muscle weakness, and using DHS trochanteric fragment needs fixation with screw.

Fixation failure is rare in spite of allowing the patient full weight bearing the day after surgery even in patients with severe osteoporosis and comminution, provided the sliding implant is placed properly.

Nonunion: Nonunion may occur due to implant or bone failure or neglected fractures. In nonunion, which does not exceed 1 percent, removal of the device and fixation in more valgus position with bone grafting gives the success rate of 90 percent. In elderly patients, a nonunion is best treated by total hip replacement, particularly if the joint is damaged by the penetration of a fixation device or if there is arthritis of the hip.

Malunion: Malunion is usually in varus and external rotation. This deformity is treated by valgus osteotomy. Schatzker [25] advocates lateralization of the shaft to restore mechanical axis of the femur from the midsagittal plane. DHS causes medialization of the shaft and subsequent valgus over load at the knee. Schatzker et al[25] have found the 120 degrees repositioning blade plates to be the appropriate fixation devices as they allow for lateralization of the shaft. Avascular necrosis has not been reported in any series above 1 percent. In the elderly shoe raise may help if surgery is contraindicated.

   Conclusions   Top

Dynamic Hip Screw (DHS) is still the gold standard for treating intertrochanteric fractures. The new classification, modified Jenson-Evan's classification is treatment oriented. Unstable intertrochanteric fracture needs some modification or may be treated by IMN with S.H.S. very unstable fractures need I.M.N. or arthroplasty.

Conclusions drawn on evidence based medicine are; given the lower complication rates, a sliding hip screw is superior for intertrochanteric fracture fixation. More studies are needed to determine whether IM nails are superior for select fracture types (reverse oblique fractures). The sliding hip screw remains the implant of choice for stabilization of intertrochanteric hip fractures.

   References   Top

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2. Grosse A, Kempf I, Lafforgue D. Fen Chir Orthop 64: (Suppl) 33, 1978  Back to cited text no. 2    
3. Russel TA. Fractures of hip and pelvis: In Crenshaw AH (Ed): Campbell's Operative Orthopaedics (8th ed). St Louis: CV Mosby. 1992: 895.  Back to cited text no. 3    
4. Evans EM. The treatment of trochanteric fracture of femur. J Bone Joint Surg (Br).1949; 31: 190-203.  Back to cited text no. 4    
5. Gotfried Y. The lateral trochanteric wall. Clin Orthop. 2004; 425:.82-86.  Back to cited text no. 5    
6. Kyle RF, Gustilo RB, Premer RF. Analysis of 622 intertrochanteric hip fractures-a retrospective and prospective study. J Bone Joint Surg (Am).1979; 61: 216-21.  Back to cited text no. 6    
7. Boyd HB, Griffin LL. Classification and treatment of trochanteric fractures. Arch Surg. 1949; 38: 853.  Back to cited text no. 7    
8. Goldhaggen PR, O'connor DR, Schumarze D et al. Prospective comparative study of compression hip screw in the Gamma nail. J Orthop Trauma. 1994; 8: 367-72.  Back to cited text no. 8    
9. Leung Ks, So WS, Shung WY et al. Gamma nails and dynamic hip screws for peritrochanteric fractures-a randomized prospective in the elder patients. J Bone Joint Surg (Am).1992 ;74: 345-51.  Back to cited text no. 9    
10. Radford PJ, Needoff M, Webb JK. A prospective prolonged compari­son of the dynamic hip screw and the Gamma locking nail. J Bone Joint Surg (Br).1993 ; 75B: 789-93.  Back to cited text no. 10    
11. Williams WW, Parker BC. Complictions associated with use of the Gamma nail. Injury. 1992; 23: 291.  Back to cited text no. 11    
12. Medoff RJ, Maes K: Mitsunaga M, Chappuis JL. Axial compression screw: anew implant for the fixation of the high subtrochanteric and unstable intertrochanteric fractures of the hip. Poster exhibit at the 53rd Annual Meeting of the American Academy of Orthopaedic Surgeons, New Orleans, 1990.  Back to cited text no. 12    
13. Cheug CL, Chow SP, Leons TCV. Long term results and complica­tions of cement augmentation in the treatment of unstable trochanteric fractures. Injury 134, 1989.  Back to cited text no. 13    
14. Karani R, Meier DE. Systemic pharmacologic postoperative pain man­agement in the geriatric orthopaedic patient; Clin Orthop. No. 425 Aug. 2004.  Back to cited text no. 14    
15. Baumgaertner MR, Curtin SL, Lindskog DM, Keggi JM. The value of the tip-apex distance in predicting failure of fixation of periotrochanteric hip fractures of the hip, J Bone Joint Surg (Am). 1995;77:1058.  Back to cited text no. 15  [PUBMED]  
16. Spivak JM, Zuckerman JD, Kummer FJ et al. Fatigue failure of sliding screw in hip fracture fixation-Report of three cases. J Orthop Trauma. 1991; 3: 325-31.  Back to cited text no. 16    
17. Tordis TC. Stress analysis of femur. J Biomech. 1969; 2: 163.  Back to cited text no. 17    
18. Barrios C, Brostrom LA, Stark A et al. Healing complications after internal fixation of trochanteric hip fractures-the prognostic value of osteoporosis. J Orthop Trauma. 1993; 7:438-42.  Back to cited text no. 18    
19. Pun WK, Chow SP, Chan KC et al. Effusions in the knee in elderly patients who were operated on for fracture of the hip. J Bone Joint Surg (Am). 1988; 70: 117-18.  Back to cited text no. 19    
20. Shi LY, Chen TH, Lo WH. Avascular necrosis of the femoral head and unusual complications of an intertrochanteric fractures. J Orthop Trauma. 1992; 6:82-85.  Back to cited text no. 20    
21. DiMayo FR, Haher TR, Splain SH et al. Stress riser fractures of the hip after sliding screw plate fixation. Ortho Rev . 1992; 10: 1229-31.  Back to cited text no. 21    
22. Bridle SH, Patel AD, Bircher M et al. Fixation of intertro­chanteric fractures of the femur-a ramdomized perspective comparison of the Gamma nail and dynamic hip screw. J Bone Joint Surg (Br).1991;73: 330-334.  Back to cited text no. 22    
23. Halder SC. The Gamma nail for peritrochanteric fractures. J Bone Joint Surg (Br).1992; 74: 340-44.  Back to cited text no. 23    
24. Green S, Moore T, Proano F. Bipolar prosthetic replacement for the management of unstable intertrochanteric hip fractures in the elderly. Clin Orthop. 1987; 224: 169-77.  Back to cited text no. 24    
25. Schatzker J. Subcapital and intertrochanteric fractures. Schatzker J, Tile M (Eds): The rationale of operative fracture care (IInd ed) Springer: Berlin. 1996:340.  Back to cited text no. 25    

Correspondence Address:
G S Kulkarni
Fracture & Orthopaedic Hospital, Post Graduate Institute of Swasthiyog Pratishthan, Extn. Area, Miraj, Maharashtra
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Source of Support: None, Conflict of Interest: None

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DOI: 10.4103/0019-5413.34069

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