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Table 1 The relationship of gender, age, and percentage of patients to hip disease, in the NHI research database 1996–2004.

From: Incidence of hip replacement among national health insurance enrollees in Taiwan

 

All primary operations including partial and total hip replacement (94,182)

Hip disease

Number (%)

Men (%)

Age < 60 years (%)

Mean age in years

Femoral neck fractures

40143 (42.6)

35

4.5

76

Avascular necrosis

28053 (29.8)

81

76.6

49

Osteoarthrosis

16380 (17.4)

43

41.6

60

Malunion and nonunion of fracture

1273 (1.4)

52

37.2

65

Rheumatoid arthritis

510 (0.5)

21

58

55

Pathologic fracture

370 (0.4)

35

23

68

Congenital anteversion of femur

349 (0.4)

20

68

52

Ankylosing spondylitis

314 (0.3)

93

92

40

Pyogenic arthritis

212 (0.2)

67

65

52

Congenital dislocation

127 (0.1)

16

87

41

Other

6451 (6.8)

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