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Related Experiment Videos

Silicone implants.

J M Kleinert, G D Lister

    Hand Clinics
    |May 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    Silicone implant surgery for hand joints has low infection rates, but fracture and subluxation are significant concerns. Wrist implants are mainly for rheumatoid arthritis due to symptomatic fractures.

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    Area of Science:

    • Orthopedic Surgery
    • Biomaterials Science
    • Reconstructive Surgery

    Background:

    • Silicone implants are used in various joint reconstructions.
    • Complications such as infection, fracture, and subluxation require careful consideration.
    • Previous studies have reported varying incidences of these complications.

    Purpose of the Study:

    • To review the incidence and outcomes of complications associated with silicone implants in hand and wrist surgery.
    • To analyze fracture and subluxation rates in different implant types and locations.
    • To discuss potential management strategies for identified complications.

    Main Methods:

    • Literature review of publications on silicone implant surgery.
    • Analysis of reported complication rates, specifically infection, fracture, and subluxation.

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  • Comparison of complication incidences across different implant designs (e.g., Swanson, Niebauer) and joint locations (wrist, metacarpophalangeal, carpal bones).
  • Main Results:

    • Infection incidence is low, with Staphylococcus aureus being the most common pathogen; late onset is typical, and removal often yields good results.
    • Fracture rates vary: wrist implants average 12.6%, metacarpophalangeal Swanson implants 16.4%, and Niebauer implants 33.9%. Wrist implant fractures are usually symptomatic.
    • Subluxation rates are high in carpal replacements: scaphoid (53.3%), lunate (30%), and trapezium (17.5%).

    Conclusions:

    • While infection is infrequent, fracture and subluxation are major concerns in silicone implant arthroplasty.
    • The high symptomatic fracture rate limits wrist implant use primarily to rheumatoid arthritis.
    • Management of subluxation, particularly for scaphoid implants, remains challenging, with current solutions being either ineffective or unproven.