Hodge W A, Carlson K L, Fijan R S, Burgess R G, Riley P O, Harris W H, Mann R W
Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston 02114.
J Bone Joint Surg Am. 1989 Oct;71(9):1378-86.
A pressure-measuring Moore-type endoprosthesis was implanted in a seventy-three-year-old patient who had sustained a displaced fracture of the femoral neck. The measurement and telemetry of contact pressures in the hip began in the operating room, and data were acquired periodically for more than thirty-six months. Unexpectedly high localized contact pressures between the acetabular cartilage and the prosthesis were recorded. Early in the period of recovery, activities such as using a bedpan or performing isometric exercise produced pressures that were close to those recorded during normal walking. The highest pressure, eighteen megapascals, was recorded one year postoperatively, while the patient was rising from a chair. High pressures occurred in the superior and posterior aspects of the acetabulum.
将一种压力测量型摩尔式内置假体植入一位73岁的股骨颈移位骨折患者体内。髋关节接触压力的测量和遥测在手术室开始，并定期采集数据超过36个月。记录到髋臼软骨与假体之间出现了意外的高局部接触压力。在恢复初期，诸如使用便盆或进行等长运动等活动产生的压力与正常行走时记录的压力相近。术后一年，患者从椅子上起身时记录到最高压力，为18兆帕。髋臼的上侧和后侧出现了高压。
