Tibone J, Sakimura I, Nickel V L, Hsu J D
J Bone Joint Surg Am. 1978 Sep;60(6):769-75.
Twenty patients with spinal cord injury complicated by ossification around the hip were followed for eighteen months or more. The bone scan, roentgenogram, level of alkaline phosphatase, and range of hip motion of each patient were analyzed. The average follow-up was forty months. The heterotopic ossification usually did not mature until after one and one-half years. The roentgenograms were of no value in judging its maturity. The bone scan correlated well with the results of the alkaline phosphatase testing in judging maturity of the ossification. We concluded that before operative resection, a patient should have a normal level of alkaline phosphatase, decreasing activity on the bone scans, and a restriction of motion to less than 50 degrees of hip flexion.
20例合并髋关节周围骨化的脊髓损伤患者接受了18个月或更长时间的随访。分析了每位患者的骨扫描、X线片、碱性磷酸酶水平及髋关节活动范围。平均随访时间为40个月。异位骨化通常在一年半后才成熟。X线片对判断其成熟度无价值。在判断骨化成熟度方面，骨扫描与碱性磷酸酶检测结果相关性良好。我们得出结论，在手术切除前，患者碱性磷酸酶水平应正常，骨扫描活性降低，髋关节屈曲活动受限至小于50度。
