[Analysis of influencing factors of hip functional recovery after Pipkin fracture surgery].

OBJECTIVE: To investigate the influencing factors of the hip functional recovery after Pipkin fracture surgery.

METHODS: The clinical data were retrospectively analysed, from 37 patients with Pipkin fracture between May 2002 and February 2009. There were 32 males and 5 females, aged 26 to 98 years (median, 43 years). The causes of injury were traffic accident in 31 cases, a falling in 4 cases, and falling from height in 2 cases. The time from injury to operation was 1-28 days (mean, 8.6 days). According to the Pipkin classification criteria, there were 23 cases of type II, 8 cases of type III, and 6 cases of type IV. Open reduction and internal fixation (ORIF) were performed in 27 cases, total hip arthroplasty (THA) in 10 cases. The relationships between gender, age, time from injury to surgery, type of fracture, treatment way and the hip functional recovery were analysed statistically.

RESULTS: All patients achieved healing of incision by first intention, no infection and deep venous thrombosis occurred. All patients were followed up 10 to 94 months with an average of 40.5 months. Bone fusion was observed at 5-11 months (mean, 8.9 months) in patients undergoing ORIF by X-ray examination; no prosthetic loosening or subsidence occurred in patients undergoing THA. At last follow-up, Oxford Hip Score (OHS) was 16-58 points (mean, 37.2 points); the results were excellent in 12 cases, good in 13 cases, fair in 2 cases, and poor in 10 cases. The univarible analysis showed that the type of fracture and treatment way significantly affected the hip functional recovery (P < 0.05). The multivarible analysis showed that the type of fracture and treatment way had no significant effect on the hip functional recovery (P > 0.05).

CONCLUSION: Type and treatment way of Pipkin fracture may affect postoperative hip function recovery, so appropriate treatment should be selected based on fracture type to ensure the restoration of joint function.