Table 1 Preoperative data
| Â | IV-morphine group (n = 15) | SL-sufentanil group (n = 15) | p |
|---|---|---|---|
Characteristics | |||
 Age (years) | 69 [62-76] | 75 [68-78] | 0.16 |
 Female sex | 11 (73%) | 6 (40%) | 0.13 |
 BMI (kg/m2) | 27 [25-32] | 29 [26-32] | 0.75 |
 Diabetes | 5 (33%) | 5 (33%) | 1 |
 HTA | 8 (53%) | 8 (53%) | 1 |
 Active smoking | 1 (6%) | 1 (6%) | 1 |
 Alcohol intake | 0 (0%) | 0 (0%) | - |
 Anxio-depressive disorder | 3 (20%) | 0 (0%) | 0.22 |
Analgesic medications | |||
 Paracetamol | 8 (53%) | 7 (46%) | 1 |
 Tramadol | 0 (0%) | 2 (13%) | 0.48 |
 NSAID | 1 (6%) | 2 (13%) | 1 |
 Codein | 1 (6%) | 0 (0%) | 1 |
 Anticonvulsivant drug | 1 (6%) | 1 (6%) | 1 |
 Antidepressant drug | 2 (13%) | 2 (13%) | 1 |
Knee condition | |||
 Knee flexion (degrees) | 122 [108-145] | 117 [110-123] | 0.47 |
 Pain at rest (NRS) | 1 [0-5] | 2 [0-5] | 0.82 |