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The Journal of Bone & Joint Surgery British Volume
Vol. 79-B, Issue 4 | Pages 626 - 629
1 Jul 1997
Lizaur A Marco L Cebrian R

We report a prospective study, using multivariate analysis, of the factors which influence the range of movement after total knee arthroplasty in 74 patients with 83 arthroplasties at a mean follow-up of 23.6 months (12 to 41). All the patients had a diagnosis of osteoarthritis, a severely disabled knee with a Knee Society system score of less than 60, varus deformity, no previous surgery to the knee, identical prostheses implanted with a similar surgical technique, and no postoperative complications which may have affected the range of movement.

The most important factors which influenced the range of movement after arthroplasty were the preoperative range of flexion and the body-weight of the patient. There was a significant improvement in flexion and reduction of flexion contracture at each successive review up to 12 months after operation. Patients with restricted movement before operation showed a satisfactory gain at final review.