Table 1 Patient demographics
Characteristics | Forte COC (n = 310) | Delta COC (n = 292) | p value |
|---|---|---|---|
Number of patients (hips) | 248 (310) | 234 (292) | Â |
Agea (years) | 50.7 (18–79) | 50.5 (18–83) | 0.838 |
Sexc | 0.204 | ||
 Male | 116 (47) | 123 (53) | |
 Female | 132 (53) | 111 (47) | |
Affected sideb | 0.902 | ||
 Right | 163 (53) | 155 (53) | |
 Left | 147 (47) | 137 (47) | |
BMIa (kg/m2) | 23.3 (16.9–39.3) | 23.5 (16.8–37.9) | 0.461 |
Primary diagnosisb | 0.895 | ||
 ONFH | 167 (54) | 155 (53) | |
 Hip dysplasia | 55 (18) | 47 (16) | |
 Osteoarthritis | 49 (16) | 54 (18) | |
 Post-traumatic arthritis | 9 (3) | 5 (2) | |
 Sequelae of pyogenic arthritis | 11 (3) | 8 (3) | |
 Sequelae of LCP disease | 9 (3) | 12 (4) | |
 Rheumatoid arthritis | 8 (2) | 9 (3) | |
 Ankylosing spondylitis | 2 (1) | 2 (1) | |
Cup sizea (mm) | 53.9 (46–62) | 54.4 (46–64) | 0.324 |
Femoral head sizeb | |||
 28 mm | 87 (28) | – |  |
 32 mm | 223 (72) | 43 (15) | |
 36 mm | – | 249 (85) | |
Duration of follow-upa (years) | 6.7 (5–10.2) | 5.5 (5–7.4) | |