Hip dislocation following minor trauma in a patient with neurofibromatosis type 1: a case report and review of the literature

Hip International : the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Paul M DeardenSandeep P Datir

Abstract

Neurofibromatosis type 1 (NF-1) is a common autosomal dominant disorder which is known to have associated skeletal manifestations. There are documented cases of hip dislocation in NF-1, although it is a rare occurrence. Previous cases have been associated with intra-articular neurofibromas, acetabular protrusio and femoral deformities such as coxa valga and in one case increased femoral offset.The authors review the literature on pelvic manifestations and report a case of hip dislocation in a 19-year-old woman with neurofibromatosis-one following minor trauma believed to be secondary to markedly increased femoral offset.This case illustrates the effect the NF-1 can have on the anatomy of the proximal femur and one of the complications that can present to the orthopaedic surgeon, without the presence on an intra-articular neurofibroma. In a review of the literature the authors found only two other cases of hip dislocation associated with NF-1 that occurred without the presence of an intra-articular neurofibroma.

References

Sep 1, 1994·Journal of Pediatric Orthopedics·N HagaT Iwaya
Aug 6, 1999·The Journal of the American Academy of Orthopaedic Surgeons·A H Crawford, E K Schorry
Aug 2, 2002·Clinical Orthopaedics and Related Research·Michael G VitaleDavid L Skaggs
Oct 3, 2007·Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association·Hirosuke EndoToshifumi Ozaki
May 22, 2008·La Chirurgia degli organi di movimento·Manuele LampasiAlessandra Sudanese
Jun 1, 2010·The Journal of the American Academy of Orthopaedic Surgeons·David S FeldmanLauren Fonseca
Mar 18, 2011·Journal of Medical Case Reports·John G GalbraithJames A Harty

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