Table 1.
Profile of patients
| Variable | Group A (20) | Group B (35) | Group C (15) | Group D (25) | Group E (48) |
|---|---|---|---|---|---|
| Gender | |||||
| Males | 11 | 19 | 8 | 11 | 37 |
| Females | 9 | 16 | 7 | 14 | 11 |
| Age (years) | |||||
| Mean ± standard error of mean (median) | 53 ± 2 (54) | 60 ± 2 (61) | 49 ± 12 (44) | 48 ± 8.5 | 42 ± 2 (40) |
| Range | 30–65 | 41–79 | 26–75 | 30–64 | 20–71 |
| Diagnosis | |||||
| Osteoarthritis | 14 | 30 | 7 | 20 | |
| Congenital hip dysplasia | 3 | 1 | 6 | 4 | |
| Rheumatoid arthritis | 1 | ||||
| Trauma | 1 | 4 | 1 | ||
| Necrosis | 2 | 1 | |||
| Followup (months) | |||||
| Mean ± standard error of mean (median) | 58 ± 2.5 (57) | 56 ± 5.5 (56) | 24 ± 4.2 (24) | 26 ± 4.4 (25) | |
| Range | 55–63 | 48–66 | 15–33 | 14–38 | |
| Bone mass index | |||||
| Mean ± standard error of mean (median) | 28 ± 1 (27) | 25 ± 0.6 (25) | 29 ± 2 (28) | 25 ± 0.7 (25) | |
| Range | 22–37 | 22–30 | 24–40 | 22–30 | |
| Activity level | |||||
| Mean ± standard error of mean (median) | 7 ± 0.4 (6) | 6.3 ± 0.3 (6) | 8 ± 0.5 (8) | 7 ± 0.4 (7) | |
| Range | 5–10 | 4–8 | 6–10 | 4–10 | |
| Cup inclination angle | |||||
| Mean ± standard error of mean (median) | 46 ± 2.2 (45) | 42 ± 2.1 (41) | 40 ± 3.6 (41) | 42 ± 1.3 (42) | |
| Range | 30–60 | 28–58 | 28–61 | 31–58 | |
| Harris hip score | |||||
| Mean ± standard error of mean (median) | 95 ± 4.3 (95) | 93 ± 4.3 (93) | 95 ± 6.5 (100) | 91 ± 5.2 (90) | |
| Range | 88.3–100 | 80–98 | 83.5–100 | 80–100 | |
Group A = MOM-HR at 5 years; Group B = MOM-28-mm-THA at 5 years; Group C = MOM-HR at 2 years; Group D = MOM-28-mm-THA at 2 years; and Group E = control subjects.