Displaced patellar stress fracture revealing primary hyperparathyroidism: a case report.

ABSTRACT:

Background

Stress fractures are fatigue-induced injuries that typically affect weight-bearing bones of the lower limb. While often associated with mechanical overuse, atypical sites of fracture-such as the patella-should raise suspicion for underlying systemic pathology. Primary hyperparathyroidism (PHPT), characterised by autonomous parathyroid hormone overproduction, can lead to cortical bone resorption and fragility, predisposing patients to such fractures.

Case description

A 45-year-old physically active woman presented to her general practitioner with non-specific right knee pain and no history of trauma. Clinical examination was unremarkable, and initial management was conservative. Four weeks later, she developed acute pain and functional impairment. Urgent radiograph

SUBMITTER: Stevenson H 

PROVIDER: S-EPMC12593065 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature