Total hip replacement using MINIMA® short stem: A short-term follow-up study

Table 2 Arthritis type bone morphology and radiological findings

	n (%)
Arthritistype
Primaryosteoarthritis	33 (54.9)
Dysplasia (type A)1	13 (21.6)
Low dislocation (type B)1	2 (3.9)
Osteonecrosis	7 (11.8)
Post traumaticarthrtis	4 (5.9)
Other	1 (2.0)
Previous operation (osteotomy, Fracture fixation)	6 (9.8)
Proximal femoral morphology (Dorr type)
A	11 (17.6)
B	48 (78.4)
C	2 (3.9)
Ectopic ossification (Brooker classification)
All	11 (17.6)
Class 1	6 (9.8)
Class 2	5 (7.8)
Modified Gruen zones
Radiolucent lines	0
Reactive lines (zones 3, 4, 5)	2 (3.3)
Cortical hypertrophy (zones 3, 5)	4 (6.6)
Subsidencein mm2	1.8 ± 0.9 (0.0-3.9)
Leg length discrepancy in mm2	1.7 ± 5.4 (-17-19)

¹Chartofylakidis classification.

²The values are given as the mean ± SD and the range in parentheses.