Table 2 The perioperative and postoperative characteristics between the knees with late and early PMDI administration
Parameters | Late PMDI | Early PMDI | Z | P-value |
|---|---|---|---|---|
Operative duration (min) | 65.9 (62.9–68.9) | 66.8 (63.3–70.3) | −0.73 | 0.47 |
Drain output (mL) | ||||
24 h | 182.7 (140.3–225.1) | 156.4 (112.9–199.9) | −1.49 | 0.14 |
48 h | 137.7 (93.0–182.4) | 136.1 (93.0–179.2) | −0.38 | 0.71 |
VAS at rest | ||||
6 h | 3.2 (1.9–4.5) | 2.9 (1.9–3.9) | −1.16 | 0.25 |
12 h | 3.4 (2.3–4.5) | 3.2 (2.2–4.2) | −0.79 | 0.43 |
24 h | 3.6 (2.7–4.5) | 3.8 (2.8–4.8) | −0.44 | 0.66 |
48 h | 3.2 (2.3–4.1) | 3.6 (2.8–4.4) | −1.83 | 0.07 |
72 h | 2.8 (2.0–3.6) | 3.0 (2.2–3.8) | −0.79 | 0.43 |
96 h | 2.2 (1.5–2.9) | 2.4 (1.9–2.9) | −0.93 | 0.35 |
2 weeks | 2.7 (1.8–3.6) | 3.0 (2.2–3.8) | −1.20 | 0.23 |
6 weeks | 1.6 (0.9–2.3) | 1.9 (1.1–2.7) | −1.12 | 0.26 |
Degrees of knee flexion using CPM | ||||
24 h | 53.8 (45.7–61.9) | 53.2 (45.1–110.0) | −0.55 | 0.59 |
48 h | 74.2 (66.1–82.3) | 72.8 (63.6–82.0) | −1.22 | 0.22 |
72 h | 83.3 (78.2–88.4) | 81.7 (76.0–87.4) | −1.46 | 0.15 |
96 h | 87.2 (80.4–94.0) | 87.2 (80.4–94.0) | −0.19 | 0.85 |
Degrees of active knee flexion | ||||
2 weeks | 105.8 (99.3–112.3) | 104.3 (96.0–112.6) | −0.21 | 0.84 |
6 weeks | 115.7 (111.0–120.4) | 114.4 (109.4–119.4) | −1.53 | 0.13 |
Degrees of straight leg raising (SLR) | ||||
48 h | 30.8 (16.0–45.6) | 31.6 (16.6–46.6) | −0.54 | 0.59 |
72 h | 32.2 (18.6–45.8) | 33.6 (20.1–47.1) | −0.32 | 0.75 |
96 h | 34.0 (20.1–47.9) | 36.2 (22.3–50.1) | −0.57 | 0.57 |
2 weeks | 42.2 (27.3–57.1) | 43.6 (27.4–59.8) | −0.03 | 0.97 |
6 weeks | 55.0 (38.4–71.6) | 53.2 (35.5–70.9) | −0.64 | 0.52 |
Degrees of extension lag (EL) | ||||
48 h | 21.3 (17.8–24.8) | 20.5 (16.3–24.7) | −0.57 | 0.57 |
72 h | 19.6 (16.2–23.0) | 19.3 (15.4–23.2) | −0.46 | 0.65 |
96 h | 15.3 (11.7–18.9) | 14.7 (11.2–18.2) | −0.73 | 0.47 |
2 weeks | 14.9 (12.2–17.6) | 15.4 (12.3–18.5) | −0.29 | 0.77 |
6 weeks | 7.1 (4.7–9.5) | 7.0 (4.8–9.2) | −0.36 | 0.72 |