Table 1

Patient’s recovery progress

Pre-THAAfter 3weeksAfter 6 monthsAfter 8 months
Range of motion (°, right hip/left hip)
 Hip flexion95/90110/100125/125130/130
 Hip extension5/515/1025/2525/25
 Hip abduction25/1535/2570/7070/70
 Hip adduction10/1015/1025/2025/20
 Hip external rotation30/3045/3050/4570/70
 Hip internal rotation10/1015/1020/2025/25
Isometric strength (Nm/kg)
 Hip flexion–/–1.09/1.041.24/1.211.41/1.40
 Hip abduction–/–0.82/0.821.54/1.351.56/1.42
 Knee extension–/–1.39/1.321.82/1.691.86/1.80
Static balance ability
 Single-leg stance (s, right hip/left hip)–/–120/120120/120120/120
Dynamic balance ability
 Timed-Up-and-Go test (s)6.474.283.94
Walking endurance
 Six-minute waking distance (m)600660710
  • THA, total hip arthroplasty.