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CASE REPORTS
JOURNAL ARTICLE
Avascular Necrosis in the Contralateral Hip in Patients With Congenital Femoral Deficiency: A Report of 3 Cases.
Journal of Pediatric Orthopedics 2017 January
BACKGROUND: Congenital femoral deficiency is an uncommon clinical entity. We report 3 patients who developed avascular necrosis of the hip in the long (normal) leg during longitudinal observation and/or treatment of congenital femoral deficiency.
METHODS: Patients were identified in limb length discrepancy clinic and their charts were retrospectively reviewed for clinical and radiographic data collection.
RESULTS: We describe the occurrence of idiopathic avascular necrosis in the normal limb in patients being followed for limb length discrepancy.
CONCLUSIONS: Although no conclusion could be drawn about the etiology of the avascular necrosis, we describe a previously undocumented relationship between congenital femoral deficiency and avascular necrosis in the contralateral hip. This occurred in our congenital femoral deficiency population at a rate higher than expected compared with published incidences of avascular necrosis of the hip in children.
LEVEL OF EVIDENCE: Level IV-case series.
METHODS: Patients were identified in limb length discrepancy clinic and their charts were retrospectively reviewed for clinical and radiographic data collection.
RESULTS: We describe the occurrence of idiopathic avascular necrosis in the normal limb in patients being followed for limb length discrepancy.
CONCLUSIONS: Although no conclusion could be drawn about the etiology of the avascular necrosis, we describe a previously undocumented relationship between congenital femoral deficiency and avascular necrosis in the contralateral hip. This occurred in our congenital femoral deficiency population at a rate higher than expected compared with published incidences of avascular necrosis of the hip in children.
LEVEL OF EVIDENCE: Level IV-case series.
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