Nietosvaara Y, Aalto K
Department of Surgery, Aurora Hospital, Helsinki, Finland.
J Pediatr Orthop. 1997 Jan-Feb;17(1):50-3.
One hundred and sixteen knees of 33 patients with patellar dislocation and 25 normal children 12-18 years of age were examined by ultrasonography to measure the cartilaginous sulcus angle on the patellar surface of the femur. In knees with patellar dislocation, the cartilaginous sulcus angle measured between 154 and 195 degrees, exceeding the corresponding values of normal knees (134-153 degrees). In patient knees, the cartilaginous sulcus was also consistently wider than the underlying osseous sulcus. This suggests that in pediatric patients with patellar dislocation, the actual patella-stabilizing ability of the femoral sulcus is weaker than the osseous outline in axial radiographs would lead one to suppose. It would appear also that by measuring the cartilaginous sulcus angle of the femur, a clear distinction can be made between normal knee joints and joints displaying patellar instability.
对33例髌骨脱位患者的116个膝关节以及25名12至18岁的正常儿童进行了超声检查，以测量股骨髌面的软骨沟角。在髌骨脱位的膝关节中，软骨沟角在154至195度之间，超过了正常膝关节的相应值（134至153度）。在患者的膝关节中，软骨沟也始终比其下方的骨沟宽。这表明，在小儿髌骨脱位患者中，股骨沟实际的髌骨稳定能力比轴向X线片中的骨轮廓所显示的要弱。似乎通过测量股骨的软骨沟角，可以明确区分正常膝关节和表现出髌骨不稳定的关节。
