CAJ | 학술논문

目的：研究人工全髋关节置换术后髋周骨矿含量的改变。方法：对骨水泥型人工全髋关节置换的25例27髋，在术后不同时段用DEXA测定髋周5个区域的骨矿含量，并与其各自合适的对照作配对样本t检验。结果：术后1个月内(平均23d)测定组显示第4区骨矿量显著增加(P＜0.05)；术后4～6月(平均4.4月)和7～12月测定组显示5个区骨矿量无显著增减(P＞0.05)；术后14～49月(平均27.4月)测定组显示第2区和第5区骨矿量显著降低(P＜0.05)；第1区也有明显降低趋势(P=0.064)。结论：骨水泥型人工全髋置入后髋周承重部位骨矿量在12月内改变不大；术后约2年在髋臼周围和股骨小粗隆部骨矿明显丢失，与置入假体后产生应力遮挡可能有关。
목적：연구인공전관관절치환술후관주골광함량적개변。방법：대골수니형인공전관관절치환적25례27관，재술후불동시단용DEXA측정관주5개구역적골광함량，병여기각자합괄적대조작배대양본t검험。결과：술후1개월내(평균23d)측정조현시제4구골광량현저증가(P＜0.05)；술후4～6월(평균4.4월)화7～12월측정조현시5개구골광량무현저증감(P＞0.05)；술후14～49월(평균27.4월)측정조현시제2구화제5구골광량현저강저(P＜0.05)；제1구야유명현강저추세(P=0.064)。결론：골수니형인공전관치입후관주승중부위골광량재12월내개변불대；술후약2년재관구주위화고골소조륭부골광명현주실，여치입가체후산생응력차당가능유관。
To study periprosthetic mineral changes after cemented total hip arthroplasty(THA).Methods:Selecting 5 regions of interesting(ROI) in periprosthetic bone,27 hips of 25 cases were examined by dual X-ray absorptiometry(DEXA) after THA to determine the bone mineral density(BMD) of these 5 ROIs,the bone mineral changes compared with the BMD of contrast groups,and were evaluated through paired-sample t test.Result:The BMD of 4th ROI had significant increase(P＜0.05) within 1 month after THA;the BMD of all 5 ROIs had no significant differences during 4th to 12th months;the BMD of 2nd and 5th ROIs had significant decrease(P＜0.05) ,and the BMD of 1st ROI tended to become lower(P=0.064) during 14th to 49th month(average 27.4 months).Conclusion:The BMD of periprosthetic loading area were no significant change within 12 months after cemented THA;the BMD of periacetabular area and lesser trachander area were significant decrease at about postoperative 2 years,this phenomenon may be due to the stress-shielding after THA.