title: A comparison of 4 intraoperative methods to determine femoral component rotation during total knee arthroplasty.
abstract: A total of 100 consecutive posterior cruciate-retaining total knee arthroplastics were performed in 81 patients with an average age of 69 years by 1 surgeon. Diagnoses included osteoarthritis in 93 knees and rheumatoid arthritis in 7 knees. The femoral alignment necessary to create a rectangular flexion gap was determined and compared with Whiteside's line, the transepicondylar axis, and a line in 3 degrees of external rotation relative to the posterior condyles of the femur. The transepicondylar axis most consistently recreated a balanced flexion space, whereas 3 degrees of external rotation off the posterior condyles was least consistent, especially in valgus knees.
authors.affiliation: Department of Orthopaedic Surgery, University of Rochester Medical Center, New York 14642, USA.
authors.forename: C W
authors.initials: CW
authors.lastname: Olcott
authors.forename: R D
authors.initials: RD
authors.lastname: Scott
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000379:methods; D005269:Femur; D006801:Humans; D007430:Intraoperative Care; D007720:Knee Prosthesis; D020370:Osteoarthritis, Knee / Q000601:surgery