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J Pediatr Orthop. 2001 Jul-Aug;21(4):474-80.

Long-term follow-up of congenital subluxation of the hip.

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Department of Orthopedic Surgery, Faculty of Medicine, Okayama University Medical School, Okayama, Japan.


This is a retrospective study of long-term radiographic results for congenital subluxation of the hip (CSH) after closed reduction at the authors' hospital from 1963 to 1980. The age at final follow-up ranged from 14.0 to 33.9 years (average 19.1). The diagnosis of CSH was determined radiographically using Ishida criteria. The center-edge angle (CE angle) and the Sharp angle were measured serially, and the final results were evaluated using Severin classification, and evaluation of avascular necrosis used the classification of Kalamchi and MacEwen. Sixty-nine (26.3%) of 262 hips with CSH were rated as Severin group III or IV. Avascular necrosis was found in 12 hips (4.6%). The CE angle of unaffected hips had strong correlation with that of affected hips. These late results were not satisfactory and indicate that patients with CSH should be followed up at least until skeletal maturity, as is done with complete hip dislocation.

[Indexed for MEDLINE]

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