A novel extramedullary technique to guide femoral bone preparation in mobile unicompartmental knee arthroplasty based on tibial cut and overall alignment

Journal of Orthopaedic Surgery and Research
Qidong ZhangWanshou Guo

Abstract

The mobile Oxford unicompartmental knee arthroplasty (UKA) implant has been widely used with an intramedullary guide for femoral preparation. We modified the femoral guide technique based on the tibial cut first and spacer block technique. This study was performed to determine the radiographic accuracy and early clinical outcomes of the extramedullary method. We retrospectively evaluated 50 consecutive patients who underwent UKA using the extramedullary technique. An equal number of patients who underwent UKA with the conventional technique were matched as the control group. Clinical outcomes were evaluated in terms of the operating time, blood loss, range of motion, and Hospital for Special Surgery score. Radiographic accuracy was evaluated by the implant position and alignment in the coronal and sagittal planes. The mean follow-up period was 39.76 ± 5.77 months. There were no differences in the postoperative Hospital for Special Surgery score, range of motion, or hip-knee-ankle angle between the two groups. The operating time in the extramedullary group was shorter than that in the conventional group (54.78 ± 7.95 vs. 59.14 ± 10.91 min, respectively; p = 0.025). The drop in hemoglobin after 3 days was only 12.34 ± 4.98 g/L in...Continue Reading

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Dec 7, 2007·Der Orthopäde·R Hube, M Keim
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Apr 10, 2012·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Woon-hwa JungJae-Heon Jeong
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Jul 2, 2015·International Orthopaedics·Michele VassoAlfredo Schiavone Panni

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Citations

Jan 9, 2021·Knee Surgery & Related Research·Tae Kyun KimSang Min Choi
Sep 15, 2021·The Journal of Knee Surgery·Riccardo D'AmbrosiNicola Ursino

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