Japamadisaw A, Martanto T W, Hernugrahanto K D
Department of Orthopaedic and Traumatology, Universitas Airlangga, Surabaya, Indonesia.
Malays Orthop J. 2023 Jul;17(2):80-82. doi: 10.5704/MOJ.2307.013.
Intra-articular dislocation of the patella is considered a rare case where it was reported that limited cases are existing in the literature and the exact mechanism of the injury is still undetermined. Patellar dislocation is divided into extra-articular and intra-articular dislocation. We report a patient with vertical dislocation of the patella caused by a low-energy injury that is very rare according to the previous study. The patient came with a deformity, skin tenting, and pain with pressure on the superior and medial sides of the patella. During the physical examination, a deformation of skin tenting was observed with the characteristic of a "dorsal-fin" appearance over the laterally displaced patella. This paper will discuss the dislocation of the patella, which can be further classified into extra-articular and intra-articular. Vertical patellar dislocation most commonly occurred in adolescence. The outcome was considered satisfactory, and this case provides further knowledge of the mode of injury of vertical dislocation and also the possible risk factors.
髌骨关节内脱位被认为是一种罕见病例，据文献报道其病例数量有限，损伤的确切机制仍未明确。髌骨脱位分为关节外脱位和关节内脱位。我们报告了一例因低能量损伤导致髌骨垂直脱位的患者，根据先前的研究，这种情况非常罕见。患者就诊时伴有畸形、皮肤绷紧，髌骨上侧和内侧受压时疼痛。体格检查时，观察到皮肤绷紧变形，在外侧移位的髌骨上呈现出“背鳍”外观特征。本文将讨论髌骨脱位，其可进一步分为关节外脱位和关节内脱位。髌骨垂直脱位最常发生于青少年。结果被认为是令人满意的，该病例为垂直脱位的损伤模式及可能的危险因素提供了更多认识。
