Lingaraj Krishna, Bartlett John
The Melbourne Knee Fellowship, Warringal Hospital, Melbourne, Victoria, Australia.
Knee Surg Sports Traumatol Arthrosc. 2009 May;17(5):499-502. doi: 10.1007/s00167-008-0719-3. Epub 2009 Jan 31.
The position of the femoral sulcus relative to the midline of the distal femoral resection in total knee arthroplasty (TKA) was studied to determine if centralized placement of the femoral component on the distal femur was justified in terms of aligning the prosthetic sulcus with the native femoral sulcus. The location of the femoral sulcus was studied in 112 consecutive patients undergoing TKA. The mean sulcus position was 0.7 mm lateral to the midline of the distal femoral resection (SD 1.4, 95% CI, 0.5-1.0 mm). However, the variation in sulcus positions ranged from 4 mm medial to 4 mm lateral to the midline. The mean sulcus position in valgus knees was 1.0 mm lateral to the midline (SD 1.8), and that in varus knees was 0.7 mm lateral to the midline (SD 1.2) (P = 0.501). It appears prudent to centre the femoral component on the native sulcus rather than the midline of the distal femoral resection, so as to ensure accurate alignment of the prosthetic sulcus with the native sulcus and to encourage normal patella tracking.
在全膝关节置换术（TKA）中，研究了股骨沟相对于股骨远端截骨中线的位置，以确定将股骨假体置于股骨远端中央，使假体沟与天然股骨沟对齐是否合理。对112例连续接受TKA的患者的股骨沟位置进行了研究。平均沟位置在股骨远端截骨中线外侧0.7mm（标准差1.4，95%可信区间，0.5 - 1.0mm）。然而，沟位置的变化范围是从中线内侧4mm到外侧4mm。外翻膝的平均沟位置在中线外侧1.0mm（标准差1.8），内翻膝的平均沟位置在中线外侧0.7mm（标准差1.2）（P = 0.501）。将股骨假体置于天然沟而非股骨远端截骨中线的中央似乎更为谨慎，以便确保假体沟与天然沟准确对齐，并促进髌骨正常轨迹。
