Table 2.
Perioperative data
| Perioperative data | Number | Percent | Median Cr-Co ion |
|---|---|---|---|
| Revision indication | |||
| • ARMD | 49 | 76 |
Cr: 325 ± 200 nmol/l Co: 385 ± 250 nmol/l |
| • Painful hip with elevated ion• | 7 | 11 |
Cr: 249 ± 86 nmol/l Co: 243 ± 140 nmol/l |
| • Loosening | 8 | 12 |
Cr: 57 ± 25 nmol/l Co: 77 ± 40 nmol/l |
| Median blood loss (ml) |
Median 600 |
Range 160–2200 |
Standard deviation 507 |
|
Hauptfleisch MRI classification • Type I: Cyst wall < 3 mm • Type II: Cyst wall > 3 mm • Type III: Pseudotumor |
Number 22 21 6 |
Percent 44 42 12 |
|
| Paprosky classification [15] | Number | Percent | |
| • Femoral | |||
|
- I - II - IIIa |
48 14 2 |
75 22 3 |
|
| • Acetabular | |||
|
- I - Iia - IIb - IIc - IIIa - IIIb |
27 25 4 3 4 1 |
42 39 6 5 6 2 |
|
| Acetabular cup construct | Number | Percent | |
|
• Cementless • Cemented cup - Ganz - Burch-Schneider - Ultraporous metal back (TMARS) - Double socket - Into bony acetabulum |
53 3 1 3 2 2 |
82 5 2 5 3 3 |
|