Table III.
Types of hip procedures undertaken between June and December in 2019 and 2020, before and after the first COVID-19 lockdown.
| Hip procedure | Jun | July | Aug | Sept | Oct | Nov | Dec | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019 | 2020 | 2019 | 2020 | 2019 | 2020 | 2019 | 2020 | 2019 | 2020 | 2019 | 2020 | 2019 | 2020 | |
| Hip arthroscopy | ||||||||||||||
| N | 2 | 4 | 7 | 8 | 6 | 4 | 4 | 7 | 4 | 5 | 8 | 1 | 0 | 1 |
| Mean age, yrs | 42.97 | 35.82 | 36.97 | 36.07 | 36.97 | 36.07 | 32.52 | 33.10 | 25.95 | 32.38 | 32.4 | 16.33 | N/A | 30.11 |
| SD | 7.07 | 16.27 | 11.44 | 10.19 | 24.19 | 20.52 | 7.84 | 12.34 | 5.53 | 15.37 | 12.34 | N/A | N/A | N/A |
| Range | 37.97 to 47.96 | 20.65 to 58.09 | 23.11 to 50.95 | 20.85 to 48.54 | 16.78 to 85 | 18.94 to 66.97 | 22.65 to 40.25 | 19.48 to 58.76 | 20.27 to 30.9 | 22.06 to 59.26 | 16.08 to 53.6 | 16.33 to 16.33 | N/A | 30.11 to 30.11 |
| Mean BMI, kg/m2 | 26 | N/A | 27 | 29.36 | 26.5 | 22.15 | N/A | 31.93 | N/A | 25.45 | 21 | 20.87 | N/A | 28.40 |
| SD | 8.49 | N/A | 4.9 | 9.59 | 4.2 | 4.65 | N/A | 6.89 | N/A | 2.48 | 4.24 | N/A | N/A | N/A |
| Range | 20 to 32 | N/A | 22 to 36 | 21.98 to 42.31 | 22 to 32 | 18.86 to 25.44 | N/A | 27.06 to 36.8 | N/A | 23.21 to 28.4 | 18 to 24 | 20.87 to 20.87 | N/A | 28.4 to 28.4 |
| ASA grade, n | ||||||||||||||
| 1 | 1 | 4 | 2 | 5 | 3 | 2 | 3 | 5 | 2 | 4 | 7 | 1 | N/A | 0 |
| 2 | 0 | 0 | 5 | 3 | 3 | 2 | 1 | 1 | 2 | 1 | 1 | 0 | N/A | 1 |
| 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | N/A | 0 |
| 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | N/A | 0 |
| Primary hip arthroplasty | ||||||||||||||
| N | 54 | 2 | 137 (2 hip resurfacing) | 99 (2 hip resurfacing) | 108 | 127 | 120 (1 hip resurfacing) | 121 (1 hip resurfacing) | 134 (2 hip surfacing) | 112 (2 hip resurfacing) | 116 | 108 | 60 | 56 |
| Mean age, yrs | 65.38 | 48.31 | 69.05 | 63.75 | 69.05 | 63.75 | 67.7 | 67.88 | 70.71 | 68.22 | 68.93 | 69.20 | 71.11 | 66.72 |
| SD | 15.36 | 10.07 | 11.09 | 11.88 | 11.25 | 10.79 | 12.86 | 12.09 | 11.3 | 12.01 | 12.09 | 12.21 | 10.49 | 10.24 |
| Range | 20.28 to 93.44 | 41.19 to 55.42 | 40.25 to 91.64 | 24.73 to 86.26 | 24.96 to 98.76 | 40.10 to 94.96 | 29.52 to 92.5 | 28.87 to 89.11 | 38.98 to 91.35 | 28.14 to 89.90 | 18.36 to 94.18 | 29.99 to 89.98 | 45.8 to 90.54 | 36.88 to 86.48 |
| Mean BMI kg/m2 | 29.37 | N/A | 28.78 | 26.99 | 27.7 | 28.84 | 29.79 | 29.57 | 27.2 | 28.59 | 27.86 | 28.93 | 27.53 | 28.69 |
| SD | 5.31 | N/A | 5.51 | 5.76 | 5.42 | 5.67 | 5.75 | 6.48 | 4.98 | 5.96 | 4.82 | 6.09 | 6.32 | 4.76 |
| Range | 20 to 44 | 0 | 19 to 45 | 19.37 to 46.55 | 20 to 41 | 16.9 to 42.76 | 18 to 42 | 21.15 to 52.76 | 19 to 42 | 17.82 to 46.4 | 18 to 35 | 19.76 to 49.53 | 17 to 39 | 20.58 to 39.64 |
| ASA grade, n | ||||||||||||||
| 1 | 6 | 1 | 17 | 18 | 13 | 8 | 16 | 9 | 12 | 12 | 6 | 4 | 6 | 8 |
| 2 | 36 | 1 | 103 | 72 | 78 | 94 | 89 | 86 | 94 | 65 | 88 | 77 | 41 | 34 |
| 3 | 11 | 0 | 15 | 9 | 16 | 25 | 15 | 26 | 24 | 34 | 19 | 27 | 11 | 14 |
| 4 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 0 | 1 | 0 |
| Revision hip arthroplasty | ||||||||||||||
| N | 4 | 0 | 12 | 1 | 18 | 4 | 12 | 6 | 12 | 6 | 8 | 3 | 2 | 4 |
| Mean age, yrs | 69.39 | N/A | 65.83 | 54.20 | 65.83 | 54.20 | 73.12 | 63.42 | 66.13 | 68.54 | 76.24 | 88.90 | 67.06 | 72.36 |
| SD | 4.18 | N/A | 10.05 | N/A | 15.2 | 3.65 | 6.9 | 6.74 | 12.78 | 13.77 | 12.05 | 7.93 | 5.06 | 13.10 |
| Range | 64.43 to 73.72 | N/A | 43.58 to 79.59 | 54.20 to 54.20 | 26.87 to 88.39 | 69.50 to 77.55 | 64.92 to 89.49 | 56.92 to 75.87 | 37.92 to 81.84 | 52.54 to 82.57 | 58.12 to 92.88 | 79.97 to 95.13 | 63.48 to 70.63 | 55.53 to 86.90 |
| Mean BMI, kg/m2 | 32 | N/A | 28.88 | N/A | 28.33 | 26.88 | 30 | 31.98 | 26 | 24.89 | 28 | N/A | N/A | 33.6 |
| SD | 4.32 | N/A | 3.04 | N/A | 5.34 | 3.90 | 5.48 | 7.55 | 6 | 1.57 | N/A | N/A | N/A | 12.08 |
| Range | 28 to 38 | N/A | 25 to 34 | 0 | 22 to 36 | 24.12 to 29.64 | 23 to 37 | 26.64 to 37.32 | 23 to 35 | 23.32 to 26.45 | 28 to 28 | 0 | N/A | 22.64 to 46.55 |
| ASA grade, n | ||||||||||||||
| 1 | 0 | N/A | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| 2 | 4 | N/A | 8 | 1 | 12 | 2 | 8 | 4 | 7 | 4 | 6 | 0 | 2 | 3 |
| 3 | 0 | N/A | 3 | 0 | 6 | 1 | 4 | 1 | 4 | 2 | 1 | 2 | 0 | 1 |
| 4 | 0 | N/A | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 |
| Other hip procedures | ||||||||||||||
| N | 6 | 0 | 13 | 7 | 13 | 15 | 15 | 16 | 16 | 19 | 13 | 10 | 3 | 6 |
| Mean age, yrs | 53.81 | N/A | 61.83 | 48.00 | 61.83 | 48.00 | 54.63 | 52.04 | 61.96 | 57.69 | 55.91 | 62.98 | 60.81 | 56.60 |
| SD | 16.5 | N/A | 17.03 | 19.43 | 14.77 | 19.87 | 16.26 | 16.98 | 18.27 | 16.19 | 20.07 | 17.90 | 3.86 | 23.21 |
| Range | 30.59 to 76.35 | N/A | 26.28 to 86.12 | 25.67 to 76.14 | 35.16 to 86.2 | 16.09 to 82.89 | 24.8 to 81.71 | 28.10 to 79.40 | 21.7 to 80.03 | 24.66 to 76.79 | 23.45 to 80.45 | 36.48 to 84.95 | 56.53 to 64.04 | 25.88 to 84.05 |
| Mean BMI, kg/m2 | 29.5 | N/A | 26.44 | 26.23 | 27.5 | 26.80 | 32 | 27.66 | 36 | 26.20 | 34.67 | 28.58 | N/A | 21.98 |
| SD | 6.75 | N/A | 7.02 | 2.84 | 2.12 | 5.28 | N/A | 5.19 | N/A | 3.98 | 9.87 | 4.21 | N/A | 3.90 |
| Range | 23 to 41 | N/A | 20 to 29 | 24.22 to 28.23 | 26 to 29 | 20.87 to 33.67 | 32 to 32 | 21.93 to 32.87 | 36 to 36 | 19.49 to 33.74 | 28 to 46 | 23.53 | N/A | 18.05 |
| ASA grade, n | ||||||||||||||
| 1 | 2 | N/A | 4 | 3 | 5 | 3 | 8 | 9 | 5 | 4 | 7 | 4 | 1 | 3 |
| 2 | 4 | N/A | 9 | 2 | 7 | 8 | 7 | 4 | 9 | 11 | 4 | 6 | 2 | 0 |
| 3 | 0 | N/A | 0 | 2 | 0 | 4 | 0 | 3 | 1 | 3 | 0 | 0 | 0 | 0 |
| 4 | 0 | N/A | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 0 | 0 | 1 |
ASA, American Society of Anesthesiologists; SD, standard deviation.