摘要
目的 :研究、分析膝关节屈曲挛缩对下肢力线的影响。方法 :募集 47例很少有膝关节不适主诉的自愿者作为本研究对象。其中男性 12例 ,年龄 2 9岁 ( 2 5～ 3 5岁 ) ,女性 3 5例 ,年龄 40岁 ( 16～ 5 7岁 )。对每例自愿者行左膝的单足站立位X线检查。分别在膝关节伸直位和不同角度的屈曲位同时作正、侧位X线摄片。以立位胫股角 (femorotibialangle ,FTA)作为本研究中下肢力线的参数。将膝关节伸直位时测得的立位FTA与相应的不同角度屈曲位时测得的立位FTA作比较分析 ,探讨立体FTA与膝关节屈曲角度之间的相关性。结果 :膝关节屈曲位时的立位FTA总是小于相应的伸直位时的立位FTA。随着膝关节屈曲角度的逐渐增大 ,相应的立位FTA逐渐减小。膝关节屈曲位和伸直位时的立位FTA的差值 (△FTA)与膝关节的屈曲角度之间存在着正相关关系。结论 :临床常见的一些膝关节手术如胫骨高位截骨和关节置换等 ,在术前计划时应考虑到膝关节屈曲挛缩对下肢力线的影响 ,否则将导致截骨过度或截骨不足。
Objective: To verify the influence of flexion contracture of the keen on limb alignment and to investigate the change of the standing femorotibial angle (FTA) with knee flexion radiologically. Methods: Twelve males with an average age of 29 years (range, 25～35) and thirty five females with an average age of 44 years (range, 16～57) were accumulated as volunteers. Radiographs were taken on the left knee of each volunteer in a one leg standing position. Anterioposterior (AP) and lateral views were performed simultaneously while the knee was in extension and in certain angles of flexion, respectively. As a parameter of limb alignment, the standing FTA was employed in this study. The standing FTAs in full knee extension were compared with the corresponding ones in different angles of knee flexion, and the relationship between the standing FTA and the flexion angle was investigated. Results: Standing FTAs in knee flexion were always smaller than the corresponding FTA decreased. Positive correlation was found between the difference of the standing FTA in full extension and in flexion (ΔFTA) and the flexion angle of the knee. Conclusion: In the preoperative planning of knee surgeries such as high tibial osteotomy and arthroplasty, the influence of flexion contracture on limb alignment should be taken into consideration to avoid overcorrection or undercorrection.
出处
《中国临床解剖学杂志》
CSCD
北大核心
2003年第3期235-237,共3页
Chinese Journal of Clinical Anatomy
