Table 1 Patient demographics and baseline clinical characteristics
| Â | Additional injection (22 patients/44 knees) | Control (22 patients/44 knees) | P value |
|---|---|---|---|
Age (years) | 77 ± 7 | 76 ± 7 | 0.78 |
Sex (female/male) | 19/3 | 15/7 | 0.28 |
Height (cm) | 151 ± 5 | 151 ± 9 | 0.94 |
Weight (kg) | 59.2 ± 9.1 | 61.1 ± 9.6 | 0.50 |
BMI (kg/m2) | 25.8 ± 3.2 | 26.7 ± 3.5 | 0.34 |
Diagnosis (OA/AN) | 21/1 | 22/0 | 1.00 |
History of diabetes mellitus (yes/no) | 3/19 | 4/18 | 1.00 |
Preoperative VAS at rest (mm) | 38 ± 24 | 32 ± 26 | 0.26 |
Preoperative VAS during activity (mm) | 46 ± 23 | 47 ± 24 | 0.86 |
Preoperative flexion angle (d) | 121 ± 18 | 119 ± 15 | 0.74 |
Preoperative extension angle (d) | − 7 ± 6 | − 9 ± 7 | 0.29 |
Surgeon (TI/ST/MW) | 11/8/3 | 12/7/3 | 0.95 |
Duration of surgery (month) | 159 ± 24 | 157 ± 24 | 0.80 |