摘要
[目的]探讨内侧髌股韧带(medial patellofemoral ligament,MPFL)重建术中股骨止点位置变化对等距特性的影响。[方法]取8具正常成人新鲜膝关节标本,游离出MPFL股骨端及髌骨端结点(O),分别在股骨端选择A、B、C、D四个测试点(内收肌结节为A点,股骨内上髁为B点,1/4圆弧的中点为C点,远点为D点),测量膝关节屈曲时髌骨结点到各测试点的长度变化。[结果]比较各测试点长度发现,股骨端远点(D)长度变化最小。[结论]在MPFL重建时应尽量以股骨内上髁前方(即远点)为中心建立骨隧道。
[ Objective] To explore the influence of change of femoral attachment on the isometric characteristics of implan- tation in medial patellofemoral ligament （MPFL） reconstruction. [ Method ] Eight fresh adult knee joint specimens, with no known history of joint pathology, were harvested at autopsy. The femoral attachment of MPFL was cut off to simulate dislocation of pattela. Based on the Fithian ＂U＂ type double bundle MPFL reconstruction method,an end point of MPFL was set in pattella and labeled as site ＂0＂. Another four testing points were selected on the medial femur,labeled as site A（adductor tubercle）,site B （ internal epicondylar of femur）, site C （ the midpoint of the 1/4 arc） ,and site D （the far point）. At 300,600,90°, 120° knee joint flexion, the length changes of implantation from four testing points to site O were measured and com- pared. Then, the position of isometric point was investigated according to the ＂isometric＂ theory and pattela,at the same time, was confirmed to enter the femoral trochlear smoothly. [ Resuit]The changing of the length of implantations was the smallest in point D. In this position,the change of lengh was the smal- lest in 30° flexion （ 5.33 ± 1.05 nun ）, whereas the change was the largest in 120° flexion（ 7.82 ± 1.89 mm）. [ Conclusion ] The anterior medial epicondyle（ the far point） should he the eenter for establishing bone tunnel in MPFL reconstruction. Key words：pattela dislocation, biomechanics, medial patellofemoral ligament
出处
《中国矫形外科杂志》
CAS
CSCD
北大核心
2015年第22期2089-2093,共5页
Orthopedic Journal of China
关键词
髌骨脱位
生物力学
内侧髌股韧带
pattela dislocation,biomechanics,medial patellofemoral ligament
