• Primary osteoarthritis

52.6% (n = 71)

• Secondary osteoarthritis due to^a

23.0% (n = 31)

? Slipped capital femoral epiphysis (SCFE)

8.1% (n = 11)

? Congenital hypoplasia or dysplasia of the hip

7.4% (n = 10)

? Closed wedge resection of the proximal femur

5.2% (n = 7)

? Legg-Calve-Perthes disease (LCP)

0.7% (n = 1)

? Postseptic osteoarthritis

0.7% (n = 1)

? Acetabular fracture

0.7% (n = 1)

• Avascular necrosis of the femoral head (AVN)

9.6% (n = 13)

• Primary revision due to^a

6.7% (n = 9)

? Aseptic loosening of the acetabular component^b

5.2% (n = 7)

? Loosening of the stem due to low grade infection

0.7% (n = 1)

? Aseptic loosening of the stem

0.7% (n = 1)

• Femoral neck fracture^a

? Pertrochanteric

4.4% (n = 6)

? Intertrochanteric

2.2% (n = 3)

? Medial/subcapital

0.7% (n = 1)

? Lateral/transcervical

0.7% (n = 1)

• Rheumatoid arthritis

2.2% (n = 3)

• Secondary revision due to^a

1.5% (n = 2)

? Aseptic loosening of the stem

0.7% (n = 1)

? Septic (low grade) loosening of the acetabular component

0.7% (n = 1)