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Table 2 Japanese Orthopaedic Association hip scores, hip abductor strength, knee extensor strength, and TUG values before (Pre) and 6 months (6M) and 12 months (12M) after THA for THA patients, and muscle strength and TUG value for healthy subjects

From: A predictive model for hip abductor strength and knee extensor strength 12 months after total hip arthroplasty with an interaction term

  p value (vs 12M) Control p value (vs control)
  Pre 6M 12M Pre vs 6M vs 6M vs 12M vs
JOA hip score 42.0 (32.0 to 49.0) 75.0 (73.0 to 78.0) 78.0 (76.0 to 80.0) <.001 b <.001 b     
Muscle strength (Nm)
  Hip abductor 40.7 (10.8) 51.1 (12.0) 55.0 (12.3) <.001 a <.001 a 69.1 (13.7) <.001 c <.001 c
  Knee extensor 53.8 (16.1) 62.3 (16.0) 68.5 (16.4) <.001 a <.001 a 71.1 (21.0) <.001 c .133 c
TUG value (sec) 8.4 (1.8) 6.9 (1.1) 6.7 (0.9) <.001 a <.001 a 5.7 (0.6) <.001 d <.001 d
  1. Abbreviations: JOA Japanese Orthopaedic Association, TUG timed up and go
  2. a: Paired t-test, b: Wilcoxon signed-rank test, c: general linear model adjusted for body weight, d: two-sample t-test. Values are presented as mean (standard deviation) or median (1st quartile to 3rd quartile). TUG values were compared with missing values excluded (n = 81)