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    Clin Orthop Relat Res. 2008 Jun;466(6):1503-9. Epub 2008 Mar 6.

    Case report: Congenital knee dislocation in a patient with larsen syndrome and a novel filamin B mutation.

    Source

    Department of Orthopaedic Surgery, Washington University School of Medicine, One Children's Place, Suite 4S20, St Louis, MO 63110, USA. dobbsm@wudosis.wustl.edu

    Abstract

    We treated a patient with multiple congenital joint dislocations and facial dysmorphisms consistent with Larsen syndrome. Sequencing of the FLNB gene resulted in identification of a novel, de novo 508G>C point mutation resulting in substitution of proline for a highly conserved alanine (A170P). This mutation has not been described previously but is likely causative because this alanine is highly conserved and is located in the calponin homology domain where other mutations have been described. We also report the successful use of a minimally invasive technique in achieving initial correction of bilateral congenital knee dislocations in this patient. The technique consists of serial manipulations and castings followed by an open quadriceps tenotomy. Longer followup is needed to ensure maintenance of correction and to avoid the need for more extensive surgery, which has been the traditional treatment for congenital knee dislocation associated with Larsen syndrome.

    PMID:
    18322662
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC2384041
    Free PMC Article

    Images from this publication.See all images (8) Free text

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