Ihedinmah Temple, Paish Lauren
Emergency Medicine, Wyckoff Heights Medical Center, Brooklyn, USA.
Cureus. 2023 Sep 5;15(9):e44756. doi: 10.7759/cureus.44756. eCollection 2023 Sep.
Vertical patella dislocation or "dorsal fin patella" is a rare but potentially debilitating orthopedic condition characterized by the displacement of the kneecap in a vertical direction. It occurs when the patella moves out of its normal position within the trochlear groove of the femur, rotating along its vertical axis resulting in the articular surface facing either medially or laterally. The mechanism of injury is primarily through axial rotation injury at the knee but could also occur secondary to a medial or lateral trauma to the patella. This dislocation can cause significant pain, immobility, and instability of the knee joint. Closed reduction to restore the patella to its proper alignment is a non-surgical technique that is uncommonly employed to treat vertical patella dislocations due to the inherent risk of osteochondral lesions. Here, we present a case of a 39-year-old male with a vertical patella dislocation after sustaining a traumatic blow to the knee during a Jiu-jitsu sparring exercise with a partner. This injury was successfully managed by a closed reduction in the emergency department.
垂直髌骨脱位或“背鳍髌骨”是一种罕见但可能使人衰弱的骨科疾病，其特征是髌骨在垂直方向上移位。当髌骨在股骨滑车沟内移出其正常位置，沿其垂直轴旋转，导致关节面朝向内侧或外侧时，就会发生这种情况。损伤机制主要是通过膝关节的轴向旋转损伤，但也可能继发于髌骨的内侧或外侧创伤。这种脱位会导致膝关节严重疼痛、活动受限和不稳定。闭合复位以恢复髌骨的正确对线是一种非手术技术，由于存在骨软骨损伤的固有风险，很少用于治疗垂直髌骨脱位。在此，我们报告一例39岁男性病例，该患者在与伙伴进行柔术对练时膝盖受到外伤打击后发生垂直髌骨脱位。此损伤在急诊科通过闭合复位成功处理。
