Duff S R
J Comp Pathol. 1985 Jan;95(1):113-22. doi: 10.1016/0021-9975(85)90083-0.
Postmortem examination revealed antitrochanteric degeneration in turkeys (8 male, 2 female) and broiler type chickens (5 male, 1 female). Antitrochanteric degeneration was detected in birds aged 20 weeks or older but histological examination identified lesions in others with grossly normal antitrochanters. Normal and abnormal antitrochanteric development was studied in male, skeletally immature, turkeys and broilers. Differential subchondral bone growth occurred, with relatively delayed ilial bone development. As a result, hyaline cartilage was retained dorsally and persisted even in adult birds. Retained hyaline, and in younger birds growth plate, cartilage was prone to osteochondrosis. When cartilage flap formation involved fissures traversing retained hyaline cartilage, the term osteochondrosis dissecans was appropriate. In other cases of antitrochanteric degeneration, changes typical of osteoarthrosis were present with, in some instances, no evidence of pre-existing osteochondrosis. Certain sites of antitrochanteric cartilage may be susceptible to fatigue failure in these cases.
尸检发现火鸡（8只雄性，2只雌性）和肉用型鸡（5只雄性，1只雌性）存在转子下变性。在20周龄或更大的禽类中检测到转子下变性，但组织学检查在转子外观正常的其他禽类中也发现了病变。对雄性、骨骼未成熟的火鸡和肉用型鸡的正常和异常转子下发育进行了研究。出现了不同的软骨下骨生长情况，髂骨发育相对延迟。结果，透明软骨在背侧保留下来，甚至在成年禽类中也持续存在。保留的透明软骨，以及在较年轻禽类中的生长板软骨，容易发生骨软骨病。当软骨瓣形成涉及穿过保留的透明软骨的裂隙时，使用“分离性骨软骨炎”这一术语是合适的。在其他转子下变性病例中，出现了骨关节炎的典型变化，在某些情况下，没有先前存在骨软骨病的证据。在这些病例中，转子下软骨的某些部位可能易发生疲劳性损伤。
