Does contralateral knee range of motion predict postoperative knee range of motion after total knee arthroplasty?

Abstract

The aim of this study was to determine if contralateral knee range of motion is associated with postoperative range of motion in the operative knee after total knee arthroplasty. Methods: Contralateral (nonoperative) knee range of motion was compared to postoperative knee range of motion after total knee arthroplasty using linear regression models in 59 patients who had undergone primary total knee arthroplasty with a minimum of 4 months postoperative follow-up data (range 4-13 months). Results: A strong linear relationship was observed between contralateral knee ranges of motion of 115°or greater and postoperative knee ranges of motion after total knee arthroplasty (slope 0.93, 95% CI 0.58-1.29, P < 0.0001), with a mean difference of −7.44°(95% CI −10.3 to −4.63, P < 0.0001). However, there was no association between contralateral knee range of motion and postoperative knee range of motion when contralateral knee range of motion was less than 115°. Conclusion: Contralateral knee range of motion of 115°or greater correlates linearly with postoperative range of motion after total knee arthroplasty, and thus may be predictive in such cases.

How much preoperative flexion contracture is a predictor for residual flexion contracture after total knee arthroplasty in hemophilic arthropathy and rheumatoid arthritis?

“…[ 34 ] reported an infection rate of 6.8% (early infection 1.1%, late infection 5.7%) in TKA in HA. The cause of the high incidence of PJI after TKA in HA is still unknown [ 7 ], but it may be due to poor skin condition caused by coagulation factor administration, immunosuppression, concomitant human immunodeficiency virus (HIV) or hepatitis C virus (HCV) infection, or bacteremia from contamination during repeated intravenous self-administration of coagulation factor concentrate [ 1 , 33 ]. In the HA groups of the present study, three knees (6.3%) underwent revision TKA at 3 months, 1.7 years, and 9.1 years after primary TKA due to PJI.…”

“…Most existing literature on the results of total knee arthroplasty (TKA) has focused on patients with degenerative osteoarthritis (OA) because it is the most common type of knee arthritis [ 1 – 4 ]. Contrary to OA, HA and RA have similar disease characteristics, including preceding synovial hypertrophy and subsequent cartilage destruction, periarticular soft tissue contracture, high incidence of flexion and valgus deformity of the knee, poor bone quality, involvement of multiple joints, and long duration of disease progression [ 5 ].…”