Simmons E D, Sullivan J A, Rackemann S, Scott R D
Department of Orthopaedic Surgery, State University of New York, Buffalo.
J Arthroplasty. 1991 Mar;6(1):45-50. doi: 10.1016/s0883-5403(06)80156-7.
The accuracy of a tibial medullary alignment device is assessed radiographically in 30 varus and 30 valgus knees undergoing total knee arthroplasty. The results suggest that although the device is reliable and accurate for varus knees, it may lead to malalignment of up to 5 degrees in valgus knees. Overall neutral alignment was achieved in 83% of the varus knees and 37% of the valgus knees. Tibial bowing was the main source of error and was present in 66% of the valgus knees, with mean of 3 degrees. Preoperative long films or cross-checking with external alignment devices is recommended to assure neutral alignment in genu valgus deformity.
在30例内翻膝和30例外翻膝接受全膝关节置换术中，通过影像学评估胫骨髓内对线装置的准确性。结果表明，虽然该装置对内翻膝可靠且准确，但在外翻膝中可能导致高达5度的对线不良。83%的内翻膝和37%的外翻膝实现了总体中立对线。胫骨弓形是主要误差来源，66%的外翻膝存在该问题，平均为3度。建议术前拍摄长腿片或使用外部对线装置进行交叉检查，以确保外翻畸形膝关节的中立对线。
