Table 1.
Pre- and postoperative hip muscles strength (Nm/kg) for arthroscopy.
| Operated Hips (n = 29) | Non-Operated Hips (n = 29) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Mean | ±SD | Median | IQR Range | Mean | ±SD | Median | IQR Range | p | |
| Quadriceps | |||||||||
| Preoperative | 2.72 | ±0.69 | 2.65 | (2.45–3.11) | 2.82 | ±0.77 | 2.77 | (2.50–3.26) | 0.177 |
| Postoperative | 2.69 | ±0.52 | 2.62 | (2.43–3.06) | 2.86 | ±0.69 | 2.90 | (2.34–3.26) | 0.095 |
| Change (%) | 2% | ±19% | −1% | (−9–15%) | 4% | ±19% | 5% | (−5–15%) | |
| p-value | 0.781 | 0.581 | |||||||
| Hamstrings | |||||||||
| Preoperative | 1.49 | ±0.43 | 1.48 | (1.18–1.79) | 1.49 | ±0.46 | 1.49 | (1.15–1.83) | 0.932 |
| Postoperative | 1.39 | ±0.38 | 1.38 | (1.15–1.64) | 1.45 | ±0.36 | 1.44 | (1.16–1.63) | 0.064 |
| Change (%) | −5% | ±16% | −1% | (−14–6%) | 1% | ±19% | 1% | (−6–7%) | |
| p-value | 0.039 | 0.380 | |||||||
| Extensors | |||||||||
| Preoperative | 2.11 | ±0.60 | 2.16 | (1.74–2.45) | 2.10 | ±0.53 | 2.06 | (1.84–2.39) | 0.946 |
| Postoperative | 2.14 | ±0.72 | 2.19 | (1.66–2.59) | 2.10 | ±0.59 | 2.05 | (1.88–2.48) | 0.661 |
| Change (%) | 4% | ±30% | 0% | (−19–19%) | 2% | ±26% | 2% | (−17–19%) | |
| p-value | 0.752 | 0.997 | |||||||
| Flexors | |||||||||
| Preoperative | 1.88 | ±0.46 | 1.84 | (1.67–2.02) | 1.95 | ±0.50 | 1.86 | (1.68–2.08) | 0.132 |
| Postoperative | 1.73 | ±0.41 | 1.67 | (1.48–1.90) | 1.93 | ±0.42 | 1.90 | (1.57–2.22) | 0.012 |
| Change (%) | −6% | ±18% | −5% | (−20–3%) | 1% | ±20% | 0% | (−12–13%) | |
| p-value | 0.046 | 0.865 | |||||||
| Abductors | |||||||||
| Preoperative | 1.97 | ±0.42 | 2.06 | (1.78–2.23) | 1.98 | ±0.45 | 1.96 | (1.65–2.37) | 0.804 |
| Postoperative | 1.72 | ±0.40 | 1.69 | (1.49–2.05) | 1.92 | ±0.34 | 1.95 | (1.76–2.12) | 0.001 |
| Change (%) | −11% | ±18% | −13% | (−22–1%) | 0% | ±23% | −6% | (−18–13%) | |
| p-value | <0.001 | 0.394 | |||||||
| Adductors | |||||||||
| Preoperative | 1.81 | ±0.54 | 1.73 | (1.58–2.07) | 1.90 | ±0.49 | 1.88 | (1.65–2.14) | 0.393 |
| Postoperative | 1.86 | ±0.45 | 1.85 | (1.57–2.17) | 1.88 | ±0.44 | 1.86 | (1.59–2.26) | 0.680 |
| Change (%) | 6% | ±21% | 4% | (−4–9%) | 2% | ±19% | 4% | (−7–13%) | |
| p-value | 0.340 | 0.417 | |||||||
| Internal rotators | |||||||||
| Preoperative | 1.13 | ±0.37 | 1.05 | (0.86–1.28) | 1.14 | ±0.43 | 1.04 | (0.84–1.25) | 0.776 |
| Postoperative | 1.11 | ±0.33 | 1.10 | (0.91–1.30) | 1.15 | ±0.38 | 1.10 | (0.94–1.47) | 0.249 |
| Change (%) | 1% | ±23% | 5% | (−11–13%) | 4% | ±21% | 0% | (−7–15%) | |
| p-value | 0.709 | 0.811 | |||||||
| External rotators | |||||||||
| Preoperative | 1.17 | ±0.40 | 1.09 | (0.90–1.53) | 1.21 | ±0.38 | 1.15 | (0.94–1.48) | 0.177 |
| Postoperative | 1.04 | ±0.37 | 0.92 | (0.82–1.14) | 1.10 | ±0.36 | 1.04 | (0.88–1.33) | 0.190 |
| Change (%) | −7% | ±25% | −7% | (−22–4%) | −8% | ±17% | −6% | (−13–3%) | |
| p-value | 0.022 | 0.014 | |||||||
SD, standard deviation; IQR, interquartile range; p, p-value.