Table 1 Numbers in the approach groups with demographic information
Approach | Minimally invasive procedure used | Number (%) | Males | Median (IQR) age at primary (years)* | Other indication for primary (than just OA) | ASA | Fixation | ||||||
P1 | P2 | P3 | P4/P5 | Cemented | Un-cemented | Hybrid | Reverse hybrid | ||||||
Posterior | No | 394,735 (54.5) | 39.2% | 70 (62–76) | 3.5% | 15.0% | 70.1% | 14.5% | 0.4% | 32.3% | 39.8% | 24.5% | 3.4% |
Posterior | Yes | 22,663 (3.1) | 38.6% | 69 (62–76) | 2.8% | 20.4% | 70.0% | 9.2% | 0.3% | 13.4% | 72.9% | 10.8% | 3.0% |
Lat/Ant-Lat/Hard | No | 260,415 (36.0) | 38.2% | 71 (64–77) | 2.6% | 14.0% | 70.0% | 15.9% | 0.6% | 46.0% | 36.6% | 15.3% | 2.1% |
Lat/Ant-Lat/Hard | Yes | 9,101 (1.3) | 36.6% | 71 (64–78) | 2.4% | 19.3% | 68.1% | 12.3% | 0.3% | 33.9% | 51.8% | 12.9% | 1.4% |
Ant/Other | No | 26,582 (3.7) | 38.1% | 70 (63–77) | 3.1% | 13.4% | 71.5% | 14.7% | 0.4% | 32.6% | 43.6% | 22.0% | 1.8% |
Ant/Other | Yes | 3,830 (0.5) | 41.0% | 69 (61–75) | 3.1% | 18.7% | 66.7% | 14.3% | 0.3% | 7.0% | 83.7% | 8.9% | 0.5% |
Trans-trochanteric | No | 6,578 (0.9) | 39.7% | 69 (62–76) | 5.2% | 15.6% | 69.0% | 15.0% | 0.3% | 85.8% | 8.1% | 5.0% | 1.1% |
Approach | Minimally invasive procedure used | Number (%) | Head size | BMI (kg/m2) | |||||||||
Number available | Large head (36 mm+) | % missing | Number available | Normal (19–25) | Under-weight (< 19) | Overweight (26–30) | Obese (> 30) | ||||||
Posterior | No | 394,735 (54.5) | 394,671 | 25.5% | 33.4% | 262,876 | 27.9% | 0.8% | 39.5% | 31.8% | |||
Posterior | Yes | 22,663 (3.1) | 22,662 | 36.8% | 32.2% | 15,371 | 35.4% | 1.1% | 40.3% | 23.2% | |||
Lat/Ant-Lat/Hard | No | 260,415 (36.0) | 260,376 | 14.0% | 45.3% | 142,430 | 27.1% | 0.8% | 39.7% | 32.4% | |||
Lat/Ant-Lat/Hard | Yes | 9,101 (1.3) | 9,097 | 12.1% | 54.1% | 4,175 | 32.1% | 1.1% | 40.6% | 26.2% | |||
Ant/Other | No | 26,582 (3.7) | 26,579 | 22.0% | 43.4% | 15,047 | 28.0% | 0.8% | 40.0% | 31.2% | |||
Ant/Other | Yes | 3,830 (0.5) | 3,829 | 41.0% | 49.0% | 1,952 | 30.4% | 1.0% | 44.5% | 24.1% | |||
Trans-trochanteric | No | 6,578 (0.9) | 6,578 | 4.1% | 71.2% | 1,894 | 31.1% | 1.3% | 40.0% | 27.6% | |||