title: High-flexion, motion-guided total knee arthroplasty: who benefits the most?
abstract: A multicenter study was performed to determine which patients have the most potential to benefit from total knee arthroplasty (TKA) with a high-flexion, guided-motion design. In 201 consecutive TKAs, the mean gain in range of motion (ROM) was 14 degrees at 3 months and 24 degrees at 6 months. The gain in flexion was significant at 3 and 6 months postoperatively. No differences were found based on preoperative diagnosis, age, or sex. There was a poor correlation between body mass index and ROM. Pre- and postoperative flexion also displayed a weak correlation. Patients with the least preoperative flexion (<90 degrees) gained the most degrees of flexion (26 degrees). We conclude that the use of a high-flexion, guided-motion TKA allows a significant functional improvement in patients with preoperative stiffness and the preservation of good flexion in patients with normal preoperative flexion.
authors.affiliation: Department of Orthopedics AZ St-Lucas, Brugge, Belgium.
authors.forename: J
authors.initials: J
authors.lastname: Victor
authors.forename: M
authors.initials: M
authors.lastname: Ries
authors.forename: J
authors.initials: J
authors.lastname: Bellemans
authors.forename: W M
authors.initials: WM
authors.lastname: Robb
authors.forename: G
authors.initials: G
authors.lastname: Van Hellemondt
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D006801:Humans; D007592:Joint Diseases / Q000601:surgery*; D007719:Knee Joint / Q000601:surgery; D016059:Range of Motion, Articular; D020127:Recovery of Function