Isolated pectoralis minor tear at the costal origin: a case-based review of the literature

This case represents the first documented costal origin tear of the pectoralis minor, associated with rib bone marrow edema following a low-energy, non-sporting mechanism. The findings expand the anatomical spectrum of PMi injuries and highlight the importance of considering this diagnosis in patients with anterior chest wall pain and an intact pectoralis major. MRI is essential for accurate localization of the lesion and exclusion of concomitant injury. Conservative management remains an effective treatment strategy.