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Table 1 Baseline characteristics patients (hips) accepted PTRS

From: Porous tantalum rod implantation is associated with low survival rates in patients with type C2 osteonecrosis of the femoral head but has no effect on the clinical outcome of conversion total hip arthroplasty: a retrospective study with an average 8-year follow-up

Charateristics Parameter
Gender (female/male) 13/25
Sides affected (uni−/bilateral) 36/2
Etiology (no. of hips)
 Alcohol 9
 Corticosteroid 26
 Idiopathic 5
ARCO stage (hips)
 Stage II 27
 Stage III 13
JIC type (hips)
 Type C1 30
 Type C2 10