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Table 4 Comparison of clinical and patient-reported outcomes between SV and MV subgroups in more and less osteophytes groups. Varus defined by MPTA

From: Predicting clinical outcomes after total knee arthroplasty from preoperative radiographic factors of the knee osteoarthritis

  More osteophytes (n = 47)Less osteophytes (n = 63)
  SV (n = 29)MV (n = 18)p-valueSV (n = 48)MV (n = 15)p-value
ROMpreoperative (degree)105.0 ± 22.297.8 ± 21.20.27113.8 ± 19.6119.7 ± 19.10.31
 postoperative (degree)125.7 ± 10.7115.0 ± 15.00.01*122.2 ± 11.5123 ± 15.30.85
 angle difference (degree)20.3 ± 19.417.2 ± 16.90.577.9 ± 19.63.3 ± 15.50.36
KSpreoperative39.5 ± 13.441.5 ± 15.20.6750.3 ± 15.047.5 ± 11.50.47
 postoperative97.2 ± 5.695.8 ± 4.30.3697 ± 4.395.4 ± 6.20.38
 improvement rate (%)95.6 ± 8.993.0 ± 6.70.2893.3 ± 9.979.2 ± 33.60.13
FSpreoperative39.1 ± 18.741.6 ± 16.90.6644.5 ± 17.537.7 ± 22.00.32
 postoperative76.3 ± 15.676.7 ± 22.60.9477.2 ± 16.975.7 ± 19.00.79
 improvement rate (%)62.5 ± 23.363.7 ± 27.10.8959.7 ± 32.651.9 ± 31.50.42
KOOS-preoperative42.6 ± 21.349.1 ± 18.60.2950.1 ± 18.341.4 ± 13.80.06
Symptompostoperative80.3 ± 16.482.1 ± 13.30.6881.9 ± 15.677.3 ± 16.90.44
 improvement rate (%)66.8 ± 23.660.8 ± 35.50.5456.7 ± 34.758.3 ± 31.80.87
KOOS-preoperative41.9 ± 18.344.6 ± 20.20.6640.7 ± 17.337.7 ± 19.90.62
Painpostoperative86.1 ± 15.389.6 ± 11.60.3986.1 ± 14.985.3 ± 14.90.85
 improvement rate (%)77.1 ± 25.281.9 ± 20.30.4974.7 ± 21.970.7 ± 30.60.65
KOOS-preoperative58.0 ± 14.062.6 ± 20.20.4261.5 ± 20.553.7 ± 20.50.22
ADLpostoperative85.6 ± 13.886.2 ± 14.60.8985.9 ± 11.187.2 ± 12.20.72
 improvement rate (%)68.2 ± 27.758.7 ± 34.60.3460.5 ± 31.765.0 ± 34.10.65
KOOS-preoperative23.5 ± 14.029.8 ± 17.30.2125.6 ± 14.229.4 ± 16.20.44
QOLpostoperative64.0 ± 25.769.7 ± 21.10.4266.6 ± 20.959.8 ± 18.10.24
 improvement rate (%)55.2 ± 30.356.8 ± 25.70.8554.9 ± 27.640.2 ± 25.20.07
  1. SV: strong varus. MPTA< 85; MV: mild varus. MPTA> 85; MPTA: medial proximal tibial angle; ROM: range of motion; KS: knee score; FS: function score; KOOS: knee injury and osteoarthritis outcome score. *Significantly different, p < 0.05