Preventing secondary screw perforation following proximal humerus fracture after locking plate fixation: a new clinical prognostic risk stratification model.

Introduction: After locking plate (LP) fixation, secondary screw perforation (SSP) is the most common complication in proximal humerus fracture (PHF). SSP is the main cause of glenoid destruction and always leads to reoperation. This study aimed to identify independent risk parameters for SSP and establish an individualized risk prognostic model to facilitate its clinical management.

[Pathological observation of femoral refracture after removal of plates].

Objective: To discuss the reasons and the treatments for the femoral refracture.

Methods: From 2004 to 2008, 10 cases of femoral refracture after plate removal were selected and treated with open reduction and bone nail internal fixation, included 4 males and 6 females ranging from 19 to 48 years with an average age of 33 years old. According to Müller classification, there were 4 cases of type A, 3 of B, 3 of C.