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Table 3 Difference in contralateral and postoperative ROM where contralateral ROM ≥115, n = 52

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

PredictornMean (SD) ROM of Operative KneeMean (SD) ROM of Contralateral KneeDifference
(95% CI)
Difference between groups,
P value
Contralateral ROM, all patients52120.8 (12.1)128.3 (8.0)−7.44 (−10.3, −4.63)*NA
Contralateral ROM, male22121.6 (13.0)128.6 (9.1)−7.00 (−11.2, −2.8)*0.7857
Contralateral ROM, female30120.3 (11.5)128.0 (7.2)−7.77 (−11.8, −3.7)*
Contralateral ROM, age <63a26120.8 (12.6)129.0 (8.9)−8.2 (−11.65, −4.7)*0.5981
Contralateral ROM, age ≥63a26120.9 (11.7)127.6 (7.1)−6.7 (−11.3, −2.0)*
Contralateral ROM, varus39118.9 (12.1)127.1 (8.1)−8.3 (−11.4, −5.1)*0.3408
Contralateral ROM, valgus6127.8 (8.1)127.5 (6.9)0.3 (−12.6, 12.23)
Contralateral ROM, neutral7125.9 (12.6)135.4 (4.5)−9.6 (−20.9, 1.77)
Contralateral ROM, CR10120.6 (14.1)129.1 (8.4)−8.5 (−14.9, −2.1)*0.6412
Contralateral ROM, PS42120.9 (11.7)128.1 (8.0)−7.2 (−10.4, −3.9)*
  1. CI confidence interval, CR cruciate retaining, NA, not applicable, PS posterior stabilized, ROM range of motion, SD standard deviation
  2. aDichotomized at median age
  3. *Significantly different from 0 (P < 0.05)