[Comparison of the posterior hemipelvectomy of the greater trochanter approach with the standard Kocher-Langenbeck approach in the treatment of posterior acetabulum wall fractures].

Objective: To compare the clinical efficacy of the posterior hemipelvectomy of the greater trochanter approach with the standard Kocher-Langenbeck(K-L) approach in the treatment of posterior acetabulum wall fractures and to explore a more optimal approach for the treatment of posterior acetabulum wall fractures.
Methods: Total of 26 patients with posterior acetabulum wall fractures were retrospectively analysed and divided into two groups:the posterior hemipelvectomy of the greater trochanter group (test group) and the standard K-L approach group (control group). In the test group, there were 24 patients including 16 males and 8 females with an average age of (42.00±4.52) years old, the time of injury to surgery was (6.75±1.15) d. In the control group, there were 23 patients including 16 males and 7 females with an average age of (41.00±5.82) years old, the time of injury to surgery was (7.09±1.20) days. The total hospital stay, length of incision, operation time, intraoperative bleeding, postoperative drainage, discharge, fracture reduction quality (Matta criteria), hip abduction muscle strength, hip function (Merle d'Aubigne-Postel score), postoperative complications and the incidence of ectopic ossification were compared.
Results: All cases were followed up for 6 months. There was no significant difference in incision length, intraoperative bleeding and postoperative drainage between two groups( P >0.05). However, the operation time of the test group was shorter than that of the control group ( P <0.05). There was no statistically significant difference in fracture reduction and hip function between two groups ( P >0.05). The hip abduction muscle strength of test group was better than that of control group( P <0.05). In addition, there was no significant difference in the incidence of postoperative complications and heterotopic ossification between two groups( P >0.05).
Conclusion: Compared with the standard K-L approach, the posterior hemipelvectomy of the greater trochanter approach can shorten the operative time, has better recovery of the postoperative hip abduction muscle strength, exposes the view of the fracture involving the more comminuted posterior acetabulum wall or the fracture of the roof of the socket, improved the rate of fracture anatomical repositioning, provides a new idea for the clinical treatment of posterior acetabulum wall fractures, and allows patients to perform functional exercises at an early stage.