Orthopaedic Surgery, Tripler Army Medical Center, Honolulu, Hawaii, USA
Orthopaedic Surgery, Tripler Army Medical Center, Honolulu, Hawaii, USA.
BMJ Case Rep. 2021 Dec 22;14(12):e246902. doi: 10.1136/bcr-2021-246902.
Multipartite (or bipartite) patella is a developmental anomaly that occurs in 2%-6% of individuals. In 50%, the variant is bilateral. Multipartite patella is usually an asymptomatic condition. Quadriceps tendon rupture is also a rare entity occurring mostly in men aged >40 years and usually results from an acute eccentric quadriceps contracture. The authors present a case of a patient with bilateral multipartite patellae that sustained bilateral multipartite avulsions as well as an associated unilateral quadriceps tendon rupture. This constellation of injuries has never been reported in the literature. The patient was treated with excision of the multipartite patella fragments and quadriceps tendon repair on the side with the extensor mechanism disruption. He was treated non-operatively for the contralateral lower extremity multipartite patella avulsion. This report, along with a thorough review of the literature, serves to demonstrate the clinical and radiographic characteristics of this unusual injury.
复发性（或双发性）髌骨是一种发育异常，发生于 2%-6%的个体中。其中 50%为双侧病变。复发性髌骨通常为无症状情况。股四头肌肌腱断裂也是一种罕见的疾病，主要发生在年龄>40 岁的男性，通常由急性偏心性股四头肌收缩引起。作者报告了 1 例双侧复发性髌骨病例，同时伴有双侧复发性髌骨撕脱以及单侧股四头肌肌腱断裂。这种损伤组合在文献中从未报道过。该患者接受了复发性髌骨碎片切除术和伸肌装置断裂侧的股四头肌肌腱修复术。对侧下肢复发性髌骨撕脱采用非手术治疗。本报告结合文献全面复习，旨在展示这种不常见损伤的临床和影像学特征。
