Duff S R
J Comp Pathol. 1985 Jul;95(3):383-92. doi: 10.1016/0021-9975(85)90042-8.
Post-mortem examination revealed lateral femoral trochanteric defects in 14 out of 104 broiler type chickens. All birds were severely lame, and in the absence of concomitant musculoskeletal disease trochanteric lesions were implicated in their clinical signs. Trochanteric muscle insertions had avulsed and the lateral metaphyseal defect was usually lined with granulation tissue. Examination of normal trochanteric development identified endochondral ossification at sites of muscle attachment. In some skeletally immature, proximal femurs evidence of osteochondrosis was detected at sites of trochanteric muscle attachment. It is deduced that broiler femoral trochanters are susceptible to muscle avulsion by virtue of their known predisposition to osteochondrosis and the pattern of muscle insertion.
尸检显示，104只肉用型鸡中有14只出现股骨大转子外侧缺损。所有鸡均严重跛行，在无并发肌肉骨骼疾病的情况下，大转子病变被认为与它们的临床症状有关。大转子肌肉附着处已撕脱，干骺端外侧缺损通常内衬肉芽组织。对正常大转子发育的检查发现，在肌肉附着部位有软骨内骨化。在一些骨骼未成熟的近端股骨中，在大转子肌肉附着部位检测到骨软骨病的迹象。据推断，肉用型鸡的股骨大转子因其已知的骨软骨病易感性和肌肉附着模式而容易发生肌肉撕脱。
