EVALUATION OF METHODS OF INTERNAL-FIXATION OF TRANSVERSE PATELLA FRACTURES - A BIOMECHANICAL STUDY

被引：83

作者：

BURVANT, JG ^{[1
]}

THOMAS, KA ^{[1
]}

ALEXANDER, R ^{[1
]}

HARRIS, MB ^{[1
]}

机构：

[1] LOUISIANA STATE UNIV,MED CTR,DEPT ORTHOPAED SURG,BIOENGN LAB,2025 GRAVIER ST,SUITE 400,NEW ORLEANS,LA 70112

来源：

JOURNAL OF ORTHOPAEDIC TRAUMA | 1994年 / 8卷 / 02期

关键词：

BIOMECHANICS; INTERNAL FRACTURE FIXATION; FRACTURE; PATELLA;

D O I：

10.1097/00005131-199404000-00012

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：

摘要：

Biomechanical testing was performed to evaluate five techniques of internal fixation of transverse patella fractures. Using cadaveric lower extremities, transverse osteotomies of the patella were performed, and the simulated fractures were fixed with the following techniques: the modified tension band, anterior tension band with a supplemental cerclage wire (the Pyrford technique), tension band with cancellous bone screws, Pyrford technique with cancellous screws, and cancellous screws alone. The fixation techniques were evaluated by measuring the separation of the fracture fragments during loading to produce a physiologic range of motion (90-degrees flexion to full extension). All techniques functioned adequately, with no fracture gap exceeding 1 mm. The tension band with screws technique performed significantly better than did the modified tension band, with an average fracture gap approximately half that of the traditional modified tension band technique. Mechanically, the addition of the screws to the tension band techniques reduces fracture separation by providing compression throughout the range of motion and by resisting the tensile loading during terminal extension.

引用

页码：147 / 153

页数：7

共 11 条

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