| | |
THA
|
Hip resurfacing
|
|---|
|
Observation
|
Predictive value
|
Joint fluid Chrome AUC
|
Joint fluid Cobalt AUC
|
Joint fluid Chrome AUC
|
Joint fluid Cobalt AUC
|
|---|
|
Lymphocyte cuff thickness
|
>0 mm
|
.549
|
.476
|
.817
|
.871a
|
| |
>0.25 mm
|
.538
|
.623
|
n/a
|
n/a
|
|
Histiocyte cuff thickness
|
>0 mm
|
.586
|
.467
|
n/a
|
n/a
|
|
≥1 mm
|
.523
|
.606
|
.736
|
.687
|
|
Surface necrosis
|
Grade II-IV
|
.551
|
.688
|
.709
|
.829a
|
| |
Grade III-IV
|
.529
|
.621
|
.820
|
.807
|
| |
Grade IV
|
.638
|
.582
|
.85
|
.95
|
|
Particle load
|
Grade 1–4
|
.536
|
.618
|
.638
|
.895a
|
| |
Grade 2–4
|
.492
|
.571
|
.552
|
.625
|
| |
Grade 3–4
|
.480
|
.489
|
.495
|
.551
|
| |
Grade 4
|
.496
|
.504
|
.588
|
.677
|
-
n/a assessment of AUC not possible due to inadequate number of controls and cases, see Table 1. a = significantly different from AUC = .5, see Figs. 2 and 3
