Table 1

Outcome scores in patients who underwent medial parapatellar and midvastus approaches, up to 2 years postoperative

OutcomeGroup; mean ± SDp value
MPAMV
SF-12 MCS, 1 yr postop52.3 ± 10.452.3 ± 10.90.79
SF-12 MCS, 2 yr postop53.6 ± 9.254.9 ± 9.70.69
SF-12 PCS, 1 yr postop41.0 ± 10.144.0 ± 10.40.12
SF-12 PCS, 2 yr postop32.4 ± 10.542.5 ± 10.30.95
WOMAC pain, 1 yr postop80.0 ± 20.781.4 ± 18.20.71
WOMAC pain, 2 yr postop82.9 ± 16.881.1 ± 32.90.86
WOMAC stiffness, 1 yr postop70.4 ± 24.172.1 ± 19.40.68
WOMAC stiffness, 2 yr postop79.1 ± 18.871.1 ± 26.80.28
WOMAC function, 1 yr postop78.5 ± 20.278.9 ± 18.30.92
WOMAC function, 2 yr postop82.6 ± 18.183.2 ± 21.90.93
WOMAC total, 1 yr postop77.8 ± 19.778.9 ± 16.60.78
WOMAC total, 2 yr postop81.8 ± 15.683.3 ± 21.30.81
Extension, °, 1 yr postop0.2 ± 1.40.5 ± 1.80.31
Extension, °, 2 yr postop0.7 ± 1.80.8 ± 1.90.82
Flexion, °, 1 yr postop119.4 ± 10.3114.7 ± 19.30.13
Flexion, °, 2 yr postop120.2 ± 9.6114.6 ± 11.20.13
KSS function, 1 yr postop83.2 ± 21.285.2 ± 18.90.61
KSS function, 2 yr postop85.0 ± 19.890.9 ± 12.20.29
KSS knee, 1 yr postop91.5 ± 11.693.0 ± 9.80.50
KSS knee, 2 yr postop91.4 ± 13.790.6 ± 12.80.87
KSS total, 1 yr postop173.5 ± 28.9176.3 ± 25.60.63
KSS total, 2 yr postop174.4 ± 31.6184.4 ± 19.00.28
  • KSS = Knee Society Score; MPA = medial parapatellar approach; MV = midvastus approach; SF-12 MCS = Short-Form 12 Mental Composite Score; SF-12 PCS = Short-Form 12 Physical Composite Score; WOMAC = Western Ontario and MacMaster Universities Osteoarthritis Index.