CONTACT PRESSURES IN CHONDROMALACIA PATELLAE AND THE EFFECTS OF CAPSULAR RECONSTRUCTIVE PROCEDURES
CONTACT PRESSURES IN CHONDROMALACIA PATELLAE AND THE EFFECTS OF CAPSULAR RECONSTRUCTIVE PROCEDURES
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DOI：
10.1002/jor.1100060405
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发表时间：
1988-07-01
影响因子：
2.8
通讯作者：
HAYES, WC
中科院分区：
文献类型：
--
作者：
HUBERTI, HH;HAYES, WC
我们用压力敏感片测量了10具髌骨软骨退行性病变的人尸体膝关节的髌股接触面积和压力。我们研究了从20 ℃到90 ℃的屈曲范围，并比较了囊重建过程前后的接触压力。对于完整、正常的包膜，I-II级的局部病变显示出50%的压力降低（从3.4 ± 0.5）。MPa至1.6 .+-。0.9 MPa）直接在病变上。III-IV级病变显示接触压力损失大于90%。这种压力的降低似乎是由于低级别软骨病变中硬度的损失和高级别病变中软骨厚度的损失。高度局部化的峰值压力也观察到正常软骨病变接壤。关节囊重建术（中膜折叠术、外侧折叠术、外侧松解术和双侧松解术）未导致一致的压力降低或产生更均匀的压力分布。特别是外侧关节囊松解术，一种流行的外科手术，导致三个膝关节没有变化，其他七个膝关节有四种不同的压力模式。
We measured patellofemoral contact areas and pressures using pressue sensitive film in ten human cadaver knees exhibiting degenerative lesions of patellar cartilage. We studied a flexion range from 20.degree.C to 90.degree.C and compared contact pressures before and after capsular reconstructive procedures. With an intact, normal capsule, localized lesions of grade I-II exhibited a 50% reduction in pressure (from 3.4 .+-. MPa to 1.6 .+-. 0.9 MPa) directly over the lesion. Grade III-IV lesions exhibited a loss of contact pressure greater than 90%. This reduction in pressure appears to result from a loss of stiffness in the low-grade cartilage lesions and from a loss of cartilage thickness in higher grade lesions. Highly localized peak pressures were also observed on the normal cartilage bordering the lesions. Capsular reconstructive procedures (media plication, lateral plication, lateral release, and bilateral release) did not result in consistent pressure reductions or in the creation of more uniform pressure distributions. In particular, lateral capsular release, a popular surgical procedure, resulted in no change in three knees and four different pressure patterns in the other seven knees.