Do large femoral heads reduce the risks of impingement in total hip arthroplasty with optimal and non-optimal cup positioning?

被引：28

作者：

Cinotti, Gianluca ^{[1
]}

Lucioli, Niccolo ^{[1
]}

Malagoli, Andrea ^{[2
]}

Calderoli, Carlo ^{[2
]}

Cassese, Ferdinando ^{[2
]}

机构：

[1] Univ Roma La Sapienza, Dept Orthopaed, Rome, Italy

[2] DTM Technol, Modena, Italy

来源：

INTERNATIONAL ORTHOPAEDICS | 2011年 / 35卷 / 03期

关键词：

DISLOCATION; MOTION; REPLACEMENT; DIAMETER; DESIGN; LINER; RANGE; SIZE;

D O I：

10.1007/s00264-010-0954-3

中图分类号：

R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学（修复外科学）];

学科分类号：

100224 [整形外科学];

摘要：

The purpose of this study was to assess whether large femoral heads (36-38 mm) improve the range of motion in total hip arthroplasty compared to standard (28-32 mm) femoral heads in the presence of optimal and non-optimal cup positioning. A mathematical model of the hip joint was generated by using a laser scan of a dried cadaveric hip. The range of motion was assessed with a cup inclination and anteversion of reference and with non-optimal cup positions. Large femoral heads increased the range of motion, compared to the 28-mm femoral head, in the presence of a hip prosthesis correctly implanted and even more so in the presence of non-optimal cup positioning. However, with respect to the 32-mm femoral head, large femoral heads showed limited benefits both in the presence of optimal and non-optimal cup positioning.

引用

页码：317 / 323

页数：7

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