Pacheco V, Shelley P, Wroblewski B M
Centre for Hip Surgery, Wrightington Hospital, Near Wigan, Lancashire, England.
J Bone Joint Surg Br. 1988 Aug;70(4):596-9. doi: 10.1302/0301-620X.70B4.3403604.
A retrospective review of 72 cases of Charnley low friction arthroplasty revised for stem loosening, has identified a number of "at risk" factors. These were: previous hip surgery and, in radiographs taken at one year, demarcation of the distal cement and fracture of the cement near the tip of the stem. Separation of the back of the stem from the cement, as an isolated feature, was not considered significant. Endosteal cavitation of the femoral shaft, rare in the first year, indicated loosening of some duration. Patients whose radiographs show the "at risk" changes, should be followed-up indefinitely in order to plan timely revision and avoid gross loss of the femoral bone stock.
对72例因柄松动而翻修的Charnley低摩擦关节成形术病例进行的回顾性研究，确定了一些“风险”因素。这些因素包括：既往髋关节手术，以及在术后一年拍摄的X光片中，远端骨水泥的分界和柄尖附近骨水泥的骨折。柄后部与骨水泥分离，若作为单独特征，则不被视为有意义。股骨干的骨内膜空泡形成，在第一年较为罕见，提示存在一定时间的松动。X光片显示有“风险”变化的患者，应进行无限期随访，以便及时规划翻修手术，避免股骨骨量的严重丢失。
