Rosenthall L, Ghazal M E, Brooks C E
Department of Orthopedics, Montreal General Hospital, McGill University, Canada.
J Nucl Med. 1991 Jul;32(7):1391-3.
A quantitative analysis of the uptake of radiophosphate adjacent to the femoral component of a porous-coated cementless prosthesis was undertaken in asymptomatic patients in order to establish normal temporal changes. The group consisted of 55 patients with 62 arthroplasties of 1.6-49-mo duration. Ratios of the stem, stem tip, greater trochanter, lesser trochanter and calcar, and normal femur to the reference sacroiliac joint were obtained, as well as tip-to-stem, and stem-to-normal femur in unilateral arthroplasties. The ratios remained stable at 12 months and beyond, except for the tip and lesser trochanter. Tip-to-stem and tip-to-sacroiliac joint ratios decreased by 24% and 33%, respectively, between 12 and 49 mo. There was also a decrease in the relative uptakes at the lesser trochanter and calcar in the same time interval. Evidence is given that different designs of prostheses may not have the same normal temporal uptakes of radiophosphate.
为了确定正常的时间变化，对无症状患者多孔涂层非骨水泥假体股骨部件附近放射性磷酸盐摄取情况进行了定量分析。该组由55例患者组成，共62例关节置换术，置换时间为1.6至49个月。获取了假体柄、柄尖、大转子、小转子和股骨矩与正常股骨相对于参照骶髂关节的摄取比值，以及单侧关节置换术中柄尖与柄、柄与正常股骨的比值。除了柄尖和小转子外，这些比值在12个月及以后保持稳定。在12至49个月之间，柄尖与柄以及柄尖与骶髂关节的比值分别下降了24%和33%。在同一时间间隔内，小转子和股骨矩的相对摄取量也有所下降。有证据表明，不同设计的假体可能没有相同的放射性磷酸盐正常时间摄取情况。
