Background:

Early periprosthetic insufficiency fracture after total knee arthroplasty (TKA) is a rare, yet serious debilitating condition. Identification of the risk factors predisposing patients to this fracture is crucial to reduce its incidence. We aimed to investigate if patients who experienced early periprosthetic insufficiency fracture after TKA shared any specific characteristics.

Methods:

In a retrospective study, the characteristic features of 17 patients with early periprosthetic insufficiency fracture were reviewed. The index TKA was performed using a medial parapatellar approach and a cemented posterior-stabilized prosthesis. The demographic characteristics of the patients, including body mass index (BMI), preoperative alignment deformity, and postfracture bone mineral density (BMD), were evaluated.

Results:

The study population included 14 women and three men with the mean age of 71.4±7.2 yr. All patients returned …