Lande Rachel, Reese Shona L, Cuddy Laura C, Berry Clifford R, Pozzi Antonio
Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL, 32608.
Vet Radiol Ultrasound. 2014 Jan-Feb;55(1):23-8. doi: 10.1111/vru.12089. Epub 2013 Aug 26.
Osteochondrosis is a common developmental abnormality affecting the subchondral bone of immature, large breed dogs. The purpose of this retrospective study was to describe CT lesions detected in scapulohumeral joints of 32 immature dogs undergoing CT for thoracic limb lameness. Eight dogs (14 scapulohumeral joints) had arthroscopy following imaging. Thirteen dogs (19 scapulohumeral joints) were found to have CT lesions, including 10 dogs (16 scapulohumeral joints) with subchondral bone lesions and 3 dogs with enthesopathy of the supraspinatus tendon. In one dog, subchondral bone lesions appeared as large oval defects within the mid-aspect of the glenoid cavities, bilaterally. These lesions resembled osseous cyst-like lesions commonly identified in the horse. This is the first report of such a presentation of a subchondral bone lesion in the glenoid cavity of a dog. In all dogs, small, focal, round or linear lucent defects were visible within the cortical bone at the junction of the greater tubercle and intertubercular groove. These structures were thought to represent vascular channels. Findings from this study support the use of CT as an adjunct modality for the identification and characterization of scapulohumeral subchondral bone lesions in immature dogs with thoracic limb lameness.
骨软骨病是一种常见的发育异常，影响未成熟的大型犬的软骨下骨。这项回顾性研究的目的是描述32只因胸肢跛行接受CT检查的未成熟犬肩胛肱骨关节中检测到的CT病变。8只犬（14个肩胛肱骨关节）在成像后接受了关节镜检查。发现13只犬（19个肩胛肱骨关节）有CT病变，其中10只犬（16个肩胛肱骨关节）有软骨下骨病变，3只犬有冈上肌腱附着点病。在一只犬中，双侧肩胛盂中部出现大的椭圆形软骨下骨缺损。这些病变类似于马中常见的骨囊肿样病变。这是犬肩胛盂软骨下骨病变这种表现的首次报告。在所有犬中，在大结节和结节间沟交界处的皮质骨内可见小的、局灶性的、圆形或线性透亮缺损。这些结构被认为代表血管通道。本研究结果支持将CT作为一种辅助手段，用于识别和表征患有胸肢跛行的未成熟犬的肩胛肱骨软骨下骨病变。
