Table 2.
Baseline Characteristics.
| 2A. Subject characteristics by baseline THA status. | ||||
|---|---|---|---|---|
| Subjects with | ||||
| BL characteristic | 1. Unilateral THA | 2. Unilateral THA in L hip | 3. Unilateral THA in R hip | 4. Controls, No THA |
| Subjects (n) | 30 | 14 | 16 | 30 |
| Gender (n; Male/ Female) | 43% (13/17) | 43% (6/8) | 44% (7/9) | 47% (14/16) |
| Age ±SD (years) | 67±10 | 67±10 | 67±11 | 66±10 |
| Body mass index ±SD (kg/m2) | 28.5±4.3 | 28.8±3.4 | 28.2±4.9 | 27.9±4.7 |
| PASE ±SD | 127±53 | 113±47 * | 140±56 | 158±73 |
| 2B. Knee K-L grade by baseline THA status. | |||||
|---|---|---|---|---|---|
| BL KL grade | Subjects with Unilateral THA | No THA (controls) | |||
| 1. All contralateral knees | 2. All ipsilateral knees | 3. Right contalateral knees * | 4. Right ipsilateral knees * | 5.Rt knees | |
| 0–1 | 50/100% (15/30) | 70/100%(21/30) | 43/100% (6/14) | 75/100% (12/16) | 73/100% (22/30) |
| 2 | 23/100% (7/30) | 20/100% (6/30) | 21/100% (3/14) | 19/100% (3/16) | 10/100% (3/30) |
| 3 | 17/100% (5/30) | 7/100% (2/30) | 29/100% (4/14) | 6/100% (1/16) | 17/100% (5/30) |
| 4 | 10/100% (3/30) | 3/100% (1/30) | 7/100% (1/14) | 0/100% (0/16) | 0/100% (0/30) |
| Knees (n) | 30 | 30 | 14 | 16 | 30 |
*
2 vs. 4, P=0.038. All other comparisons are NS, P > 0.05.
BL = Baseline; SD = Standard deviation; PASE = Physical Activity Scale for the Elderly; THA = Total hip arthroplasty; R = right; L = left
*
Only right knees are included in analyses of differences in T2 relaxation times.
1 vs 2, P=0.04 1 vs 5, P = 0.04; 3 vs 4, P=0.02; 3 vs 5, P=0.04; 4 vs. 5, P=0.56. THA = Total hip arthroplasty; K-L = Kellgren-Lawrence.