Table 4.
T1ρ relaxation time in cartilage in hips with cam-type deformity versus cartilage in control hips, initial 54 ROIs
| Slice Zone | 1 (lateral) | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 (medial) |
|---|---|---|---|---|---|---|---|---|---|
| T1ρ values in control hips | |||||||||
| 1 (anterior) | 25 ± 5 (16–33) | 26 ± 5 (19–36) | 26 ± 6 (15–38) | 28 ± 5 (19–38) | 30 ± 6 (20–41) | 32 ± 6 (23–42) | 32 ± 4 (28–42) | 30 ± 3 (26–34) | 28 ± 5 (16–38) |
| 2 | 28 ± 5 (16–38) | 29 ± 7 (16–42) | 30 ± 7 (18–41) | 31 ± 7 (19–42) | 33 ± 4 (26–47) | 34 ± 6 (26–47) | 32 ± 5 (20–39) | 32 ± 4 (25–39) | 33 ± 2 (30–34) |
| 3 | 31 ± 4 (24–37) | 31 ± 4 (22–37) | 30 ± 5 (20–36) | 30 ± 5 (21–37) | 32 ± 5 (18–38) | 32 ± 6 (23–40) | 32 ± 7 (21–44) | 32 ± 6 (24–43) | 32 ± 5 (26–37) |
| 4 | 34 ± 5 (24–47) | 33 ± 4 (25–38) | 32 ± 5 (23–38) | 31 ± 4 (22–37) | 31 ± 6 (21–39) | 31 ± 5 (21–38) | 30 ± 5 (27–43) | 33 ± 5 (27–43) | 35 ± 9 (29–49) |
| 5 | 33 ± 5 (24–42) | 33 ± 7 (21–44) | 32 ± 7 (19–45) | 33 ± 5 (23–43) | 32 ± 6 (23–46) | 32 ± 4 (27–42) | 31 ± 3 (26–36) | 31 ± 5 (22–39) | 32 ± 5 (29–36) |
| 6 (posterior) | 35 ± 8 (30–47) | 43 ± 9 (29–52) | 34 ± 8 (20–46) | 30 ± 6 (19–42) | 33 ± 7 (20–48) | 31 ± 8 (18–46) | 30 ± 6 (18–43) | 28 ± 9 (12–37) | 30 (30) |
| T1ρ values in hips with cam deformity | |||||||||
| 1 (anterior) | 30 ± 8 (16–52) | 30 ± 7 (18–50) | 32 ± 6 (19–47) | 32 ± 7 (20–48) | 33 ± 8 (20–49) | 35 ± 7 (20–49) | 35 ± 7 (19–48) | 37 ± 7 (25–56) | 39 ± 6 (25–43) |
| 2 | 32 ± 6 (18–46) | 33 ± 7 (23–50) | 33 ± 7 (20–47) | 33 ± 6 (19–45) | 35 ± 6 (23–48) | 36 ± 6 (23–48) | 37 ± 7 (20–50) | 40 ± 6 (28–51) | 43 ± 6 (35–54) |
| 3 | 33 ± 5 (22–47) | 33 ± 5 (24–46) | 34 ± 5 (23–43) | 33 ± 5 (25–47) | 34 ± 5 (25–45) | 35 ± 5 (21–60) | 36 ± 7 (21–60) | 38 ± 5 (32–51) | 42 ± 7 (35–51) |
| 4 | 33 ± 5 (23–43) | 32 ± 5 (25–45) | 32 ± 4 (23–42) | 33 ± 5 (21–48) | 33 ± 5 (21–52) | 33 ± 6 (21–52) | 33 ± 7 (20–60) | 34 ± 7 (14–55) | 43 ± 10 (32–60) |
| 5 | 32 ± 5 (22–43) | 33 ± 5 (23–44) | 33 ± 5 (18–44) | 33 ± 5 (23–42) | 35 ± 7 (16–56) | 36 ± 5 (25–52) | 36 ± 6 (23–56) | 35 ± 6 (23–45) | 39 ± 4 (34–43) |
| 6 (posterior) | 28 ± 9 (9–44) | 31 ± 9 (15–51) | 33 ± 9 (16–52) | 31 ± 7 (16–52) | 31 ± 7 (16–48) | 33 ± 7 (19–50) | 33 ± 7 (16–50) | 35 ± 7 (28–50) | 37 ± 6 (32–46) |
| p values | |||||||||
| 1 (anterior) | 0.071 | 0.061 | 0.001* | 0.081 | 0.109 | 0.189 | 0.283 | 0.003* | 0.033* |
| 2 | 0.051 | 0.038* | 0.112 | 0.389 | 0.308 | 0.310 | 0.017* | 0.000* | 0.022* |
| 3 | 0.218 | 0.177 | 0.029* | 0.085 | 0.083 | 0.053 | 0.079 | 0.002* | 0.060 |
| 4 | 0.587 | 0.706 | 0.977 | 0.235 | 0.289 | 0.161 | 0.162 | 0.479 | 0.306 |
| 5 | 0.316 | 0.857 | 0.997 | 0.611 | 0.313 | 0.023* | 0.013* | 0.075 | 0.135 |
| 6 (posterior) | 0.215 | 0.065 | 0.565 | 0.764 | 0.980 | 0.230 | 0.200 | 0.014* | 0.384 |
Comparison of T1ρ values in hips with and without cam deformity was calculated using independent Student’s t-test; T1ρ values are in milliseconds and presented as mean ± SD with range in parenthesis; * a p value < 0.05 was considered significant; ROIs = regions of interest.