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    Revision strategy for posterior extrusion of the CHARITE polyethylene core

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    Authors
    Eskander, Mark S.
    Onyedika, Ikechukwu I
    Eskander, Jonathan P.
    Connolly, Patrick J.
    Eck, Jason C.
    Lapinsky, Anthony
    UMass Chan Affiliations
    Department of Orthopedics and Physical Rehabilitation
    Department of Orthopedic Surgery
    Document Type
    Journal Article
    Publication Date
    2010-11-15
    Keywords
    Adult
    Arthroplasty, Replacement
    Biomechanics
    Device Removal
    Female
    Humans
    Intervertebral Disc
    Lumbar Vertebrae
    *Polyethylene
    Prosthesis Design
    *Prosthesis Failure
    Reoperation
    Stress, Mechanical
    Time Factors
    Tomography, X-Ray Computed
    Treatment Outcome
    Orthopedics
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    Link to Full Text
    http://dx.doi.org/10.1097/BRS.0b013e3181e9bf30
    Abstract
    STUDY DESIGN: This is a case report of a posterior extrusion of the polyethylene core from a CHARITE arthroplasty. This is the first reported case of posterior dislocation of the polyethylene and the revision strategies used to correct this problem. OBJECTIVE: To report a novel failure mechanism and revision strategy for CHARITE total disc arthroplasty (TDA). SUMMARY OF BACKGROUND DATA: Case report at a Level 1 tertiary care referral center in the northeastern United States. METHODS: This is a case report and review of the literature of a patient who sustained posterior dislocation of the polyethylene core from a CHARITE TDA several months after the index procedure. RESULTS: Core dislocation is a known complication of TDA. However, of the known reported dislocations all have been anterior. This case describes the first known occurrence of posterior core dislocation and the revision strategy for this problem. CONCLUSION: This case report highlights the first known case of a posterior dislocation of a CHARITE core. It is likely that altered biomechanical forces generated over time attributed to device failure. An instrumented posterior fusion with removal of the core is what ultimately led to a stable revision construct.
    Source
    Spine (Phila Pa 1976). 2010 Nov 15;35(24):E1430-4. doi: 10.1097/BRS.0b013e3181e9bf30. Link to article on publisher's site
    DOI
    10.1097/BRS.0b013e3181e9bf30
    Permanent Link to this Item
    http://hdl.handle.net/20.500.14038/42951
    PubMed ID
    21030890
    Related Resources
    Link to Article in PubMed
    ae974a485f413a2113503eed53cd6c53
    10.1097/BRS.0b013e3181e9bf30
    Scopus Count
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    UMass Chan Faculty and Researcher Publications
    Orthopedics and Physical Rehabilitation Publications

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