Table 2 Patient demographic characteristics
Characteristic | All patients | Younger patients (≤ 55 years) | Older patients (> 55 years) | p |
|---|---|---|---|---|
Number of hips | 345 | 175 | 170 | |
Age | 53.9 ± 13.8* | 43.1 ± 9.3 | 65.1 ± 7.2 | < 0.001 |
Sex | 0.008 | |||
Male | 171 (49.6) | 99 (56.6) | 72 (42.4) | |
Female | 174 (50.4) | 76 (43.4) | 98 (57.6) | |
BMI, kg/m2 | 0.250 | |||
< 18.5 | 22 (6.9) | 15 (9.1) | 7 (4.5) | 0.091 |
18.5–24.9 | 225 (70.1) | 109 (66.1) | 116 (74.4) | 0.246 |
25.0–29.9 | 67 (20.9) | 36 (21.8) | 31 (19.9) | 0.583 |
≥ 30.0 | 7 (2.2) | 5(3.0) | 2 (1.3) | 0.468 |
Follow-up duration, mo. | 73.6 ± 34.4 | 72.3 ± 33.9 | 75.1 ± 35.0 | 0.455 |
Reason for THA* | 0.003 | |||
Nonunion | 48 (16.3) | 24 (17.1) | 24 (15.5) | 0.914 |
Femoral head necrosis | 210 (71.2) | 105 (75.0) | 105 (67.7) | 0.737 |
Posttraumatic osteoarthritis | 37 (12.5) | 11 (7.9) | 26 (16.8) | 0.007 |
Comorbidities | 0.180 | |||
Hypertension | 63 (48.5) | 10 (43.5) | 53 (49) | < 0.001 |
Diabetes | 26 (20) | 5 (21.7) | 21 (19.6) | < 0.001 |
Cerebrovascular disease | 5 (3.8) | 0 (0.00) | 5 (4.7) | 0.067 |
Cardiovascular disease | 14 (10.8) | 2 (8.7) | 12 (11.2) | 0.005 |
Venous thromboembolism | 5 (3.8) | 3 (13) | 2 (1.9) | 1.000 |
Pulmonary disease | 7 (5.4) | 0 (0.00) | 7 (6.5) | 0.020 |
Chronic kidney disease | 10 (7.7) | 3 (13) | 7 (6.5) | 0.313 |
Type of internal fixation* | 0.077 | |||
Intramedullary nail | 3 (0.9) | 2 (1.1) | 1 (0.6) | 1.000 |
Dynamic hip screw | 20 (5.8) | 6 (3.4) | 14 (8.2) | 0.056 |
Cannulated screw | 217 (62.9) | 115 (65.7) | 102 (60.0) | 0.272 |
Anatomic plate | 22 (6.4) | 15 (8.6) | 7 (4.1) | 0.091 |