Patella fractures constitute 1% of all fractures and may disrupt the extensor mechanism of the knee. The mainstay of treatment for most patella fractures is operative fixation; however, patients with intact extensor mechanisms may be treated with splinting. We describe a series of patients with patella fractures managed non- operatively, without restricted weight bearing or splinting.

A consecutive series of 21 patients presenting with a patella fracture to two metropolitan hospitals were included in this study. All patients had an intact extensor mechanism but no distinction was made on age or fracture type. All patients were treated non-operatively with analgesia, were allowed to fully weight-bear and were not splinted. A retrospective review of the case notes was performed and data was collected with phone interview. The main outcome measure was the Western Ontario and McMaster Universities

Osteoarthritis (WOMAC) index, which has a maximum (worst) possible score of 240, and which provides an aggregate score of pain, stiffness and function. Mean time at follow up was 24 months (range 5–49 months). WOMAC scores were excellent (mean=18 of possible maximum 240; range 0–84). Only one patient had a significant complication related to their fracture (deep venous thrombosis), which was detected during hospital admission. Most patients had returned to usual work (9/14). No patients required operative fixation. There was no association between adjusted WOMAC score and age, sex, compensation status, time of follow up, or whether the patient had a significant ipsilateral injury. Patients who had returned to work (p=0.02) or who had lower levels of education (p=0.03) had better WOMAC scores.

Management of patella fractures with an intact extensor mechanism does not require restricted weight bearing or splinting.