ミタニ　シゲル   Shigeru Mitani   三谷　茂    所属   川崎医科大学  医学部 臨床医学　脊椎・関節整形外科学    職種   教授
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Comparison of tibial implant positioning between symmetrical and anatomical design implants in unicompartmental knee arthroplasty for Japanese patients.
掲載誌名	正式名：Journal of orthopaedic surgery (Hong Kong) 略　 称：J Orthop Surg (Hong Kong) ISSNコード：23094990/10225536
掲載区分	国外
巻・号・頁	31(1),pp.10225536221149485
著者・共著者	Yoshiaki Miyake, Yoshifumi Namba, Shigeru Mitani, Norifumi Umehara, Toyohiro Kawamoto, Shuro Furuichi
発行年月	2023
概要	PURPOSE:In unicompartmental knee arthroplasty (UKA) procedures, maximizing the bone coverage of the tibial implant and eliminating the medial and posterior overhang would be optimal. We commonly used Physica ZUK® (ZUK), which is a symmetrical design. Alternatively, since Persona Partial Knee® (PPK) was developed in 2017 with an anatomical design to improve bone coverage, we started PPK. We hypothesized that the PPK facilitated better bone coverage than the ZUK without obvious overhangs. This study evaluated the bone coverage and the medial and posterior overhang of these differently designed tibial implants.METHODS:Seventy-nine knees from 68 patients who underwent UKA were evaluated. Cases were categorized into the ZUK (41 knees) and PPK (38 knees) groups. CT images were acquired before surgery and 1 week after surgery. We measured the tibial bone coverage, and the medial and posterior overhang by 3D software.RESULTS:The bone coverages were 103.8 ± 4.8% and 102.0 ± 3.0%, the medial overhangs were 2.2 ± 1.2 mm and 1.4 ± 1.1 mm, and the posterior overhangs were 0.6 ± 1.3 mm and 0.4 ± 1.2 mm for the ZUK and PPK groups, respectively. The bone coverage and medial overhang were significantly different between the groups, with ZUK being larger.CONCLUSION:Patients who received PPK had significantly smaller medial overhangs and better bone coverage. PPK is more likely to give better results than ZUK.
DOI	10.1177/10225536221149485
PMID	36594921