title: A comparison of stability and clinical outcomes in single-radius versus multi-radius femoral design for total knee arthroplasty.
abstract: We compared the intraoperative varus-valgus stability from 0° to 90° of flexion and postoperative clinical outcomes in patients receiving TKA via either a single-radius femoral design (50 TKA, SR group) or multi-radius femoral design (50 TKA, MR group). We measured stabilities at 0°, 30°, 60° and 90° of flexion using a navigation system. The clinical outcomes including HSS scores, WOMAC scores and VAS score during stair climbing were compared after a minimum of 2-year follow-up. The single-radius femoral designs in TKA showed better intra-operative stability at 30° of flexion (7.6 vs. 8.3) compared with the multi-radius femoral design, but not at other angles. However, the clinical outcomes revealed no other significant differences in terms of HSS scores, WOMAC scores and VAS score between two groups.
authors.affiliation: Department of Orthopaedics Surgery, Chonnam National University Hwasun Hospital, Jeonnam, South Korea.
authors.forename: Ah-Reum
authors.initials: AR
authors.lastname: Jo
authors.affiliation: Department of Orthopaedics Surgery, Chonnam National University Hwasun Hospital, Jeonnam, South Korea.
authors.forename: Eun-Kyoo
authors.initials: EK
authors.lastname: Song
authors.affiliation: Department of Orthopaedics Surgery, Chonnam National University Hwasun Hospital, Jeonnam, South Korea.
authors.forename: Keun-Bae
authors.initials: KB
authors.lastname: Lee
authors.affiliation: Department of Orthopaedics Surgery, Chonnam National University Hwasun Hospital, Jeonnam, South Korea.
authors.forename: Hyoung-Yeon
authors.initials: HY
authors.lastname: Seo
authors.affiliation: Department of Orthopaedics Surgery, Chonnam National University Hwasun Hospital, Jeonnam, South Korea.
authors.forename: Sung-Kyu
authors.initials: SK
authors.lastname: Kim
authors.affiliation: Department of Orthopaedics Surgery, Chonnam National University Hwasun Hospital, Jeonnam, South Korea.
authors.forename: Jong-Keun
authors.initials: JK
authors.lastname: Seon
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects; D017760:Bone Malalignment / Q000209:etiology / Q000517:prevention & control; D005260:Female; D005269:Femur / Q000601:surgery*; D006801:Humans; D007593:Joint Instability / Q000209:etiology / Q000517:prevention & control; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery*; D016059:Range of Motion, Articular; D016896:Treatment Outcome
keywords: clinical outcome; multi-radius; single-radius; stability; total knee arthroplasty