Table 3. Comparison between the Approaches.
| Variable | ALS (n=25) | DAA (n=21) | DLA (n=9) | PA (n=50) | SA (n=89) | P-value |
|---|---|---|---|---|---|---|
| Age (yr) | 82.2±8.7 | 83.0±7.7 | 87.1±6.6 | 83.6±6.7 | 81.7±9.4 | 0.4 |
| BMI (kg/m2) | 20.7±3.3 | 20.2±3.6 | 21.4±4.1 | 20.6±3.4 | 19.9±3.7 | 0.7 |
| Young surgeon | 15 (60.0) | 14 (66.7) | 7 (77.8) | 45 (90.0) | 61 (68.5) | <0.05 |
| Operation duration (min) | 80±33 | 63±14 | 82±28 | 72±20 | 58±15 | <0.01 |
| Blood loss (g) | 222±225 | 202±174 | 128±9 | 107±108 | 123±87 | <0.01 |
| LLD (mm) | 6.5±4.8 | 4.3±6.1 | 0.4±7.6 | 4.1±4.3 | 2.1±5.4 | <0.01 |
| Varus angle (°) | 1.5±1.8 | 0.0±2.2 | 1.1±2.0 | −0.2±1.0 | −0.1±1.4 | <0.01 |
| Implants | ||||||
| J-taper | 19 (76.0) | 21 (100) | 9 (100) | 46 (92.0) | 89 (100) | <0.01 |
| J-taper to cement stem | 3 (12.0) | 0 (0) | 0 (0) | 1 (2.0) | 0 (0) | |
| Straight stem | 3 (12) | 0 (0) | 0 (0) | 2 (4.0) | 0 (0) | |
| Cement | 0 (0) | 0 (0) | 0 (0) | 1 (2.0) | 0 | |
| Intra-operative fractures | 4 (16.0) | 4 (19.0) | 0 (0) | 2 (4.0) | 1 (1.0) | <0.01 |
| Vancouver AGT | 1 (4.0) | 4 (19.0) | 0 (0) | 1 (2.0) | 0 (0) | |
| Vancouver B1 | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 1 (1.0) | |
| Vancouver B2 | 3 (12.0) | 0 (0) | 0 (0) | 1 (4.0) | 0 (0) | |
| Young surgeon | VAGT, 1/VB2, 1 | VAGT, 2 | 0 (0) | VAGT, 1/VB2, 1 | 0 (0) | 0.56 |
| Dislocations | 2 (8.0) | 0 (0) | 0 (0) | 1 (2.0) | 0 (0) | 0.07 |
Values are presented as mean±standard deviation or number (%).
ALS: anterolateral supine approach, DAA: direct anterior approach, DLA: direct lateral approach, PA: posterior approach, SA: superior approach, BMI: body mass index, LLD: limb length discrepancy, HA: hemi-arthroplasty.