Petersen M M, Olsen C, Lauritzen J B, Lund B, Hede A
Department of Orthopaedic Surgery, Rigshospitalet, University of Copenhagen, Denmark.
J Orthop Res. 1996 Jan;14(1):16-21. doi: 10.1002/jor.1100140105.
The adaptive bone remodeling in the proximal tibia following medial meniscectomy was measured quantitatively by dual photon absorptiometry. Thirty-three patients who had undergone a meniscectomy (randomized to either total [n=19] or partial [n=14] meniscectomy) performed by open joint surgery approximately 12 years earlier were included in the study. Bone mineral density was measured in the previously injured legs and in the healthy contralateral legs in areas located medially and laterally in the cortical bone of the subchondral plates and below in the trabecular bone of the medial and lateral tibial condyles. The distribution of bone mineral within the proximal tibia showed a characteristic and significant pattern. In the trabecular bone of the healthy contralateral knees, bone mineral density was 15% higher in the medial tibial condyles compared with the values laterally; a total or partial meniscectomy increased this difference to 25%. With regard to the cortical bone of the subchondral plates, the bone mineral density in the healthy knees was 24.8-29.4% higher medially than laterally, whereas after total and partial meniscectomy the differences were, respectively, 37.7 and 41.4%. No significant differences in the distribution of bone mineral density, at either cortical or trabecular measuring sites, were found between totally and partially meniscectomized knees.
采用双能X线吸收法对内侧半月板切除术后胫骨近端的适应性骨重塑进行了定量测量。纳入了33例约12年前接受开放性关节手术半月板切除术的患者（随机分为全半月板切除组[n = 19]和部分半月板切除组[n = 14]）。测量了先前受伤侧下肢以及对侧健康下肢的骨密度，测量部位包括胫骨平台软骨下板皮质骨的内侧和外侧区域以及胫骨内外侧髁小梁骨下方。胫骨近端骨矿物质的分布呈现出一种特征性且显著的模式。在对侧健康膝关节的小梁骨中，胫骨内侧髁的骨密度比外侧高15%；全半月板切除术或部分半月板切除术使这一差异增加到25%。关于软骨下板的皮质骨，健康膝关节内侧的骨密度比外侧高24.8% - 29.4%，而全半月板切除术和部分半月板切除术后，差异分别为37.7%和41.4%。在皮质骨或小梁骨测量部位，全半月板切除组和部分半月板切除组的膝关节之间骨密度分布没有显著差异。
