[Analysis of influencing factors of early femoral head necrosis after femoral neck fracture and construction of nomogram prediction model].

Objective: To explore the risk factors of early femoral head necrosis in patients with femoral neck fracture after operation, and to establish a nomogram prediction model.

Methods: A total of 167 patients with femoral neck fracture from January 2020 to April 2022 were selected and divided into necrosis group and non-necrosis group according to whether femoral head necrosis occurred in the early postoperative period. There were 21 males and 17 females in the necrosis group, aged from 33 to 72 years old, with an average of (53.

[Surgical treatment of pronation and supination external rotation trimalleolar fractures].

Objective: To explore the operative method and its clinical effects of pronation and supination external rotation trimalleolar fractures.

Methods: From March 2000 to July 2006,42 patients of the pronation and supination external rotation trimalleolar fractures treated with open reduction and internal fixation. Thirty-one were males and 11 were females,with an average age of 40.