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Constrained total elbow arthroplasty.

A B Swanson1, G de Groot Swanson, K Masada

  • 1Michigan State University, East Lansing.

The Journal of Arthroplasty
|September 1, 1991
PubMed
Summary
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This study evaluates a condylar-sparing constrained hinge elbow prosthesis. The implant demonstrated good pain relief and range of motion with a low loosening rate in long-term clinical use.

Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Reconstructive Surgery

Background:

  • The development of constrained hinge elbow prostheses is crucial for managing severe elbow instability and arthritis.
  • Early designs faced challenges with loosening and limited range of motion.
  • The condylar-sparing design aimed to improve fixation and preserve native anatomy.

Purpose of the Study:

  • To evaluate the long-term clinical outcomes of a condylar-sparing constrained hinge elbow prosthesis.
  • To assess implant survivorship, pain relief, and functional range of motion.
  • To analyze reasons for implant removal.

Main Methods:

  • A condylar-sparing constrained hinge elbow prosthesis with a high-density polyethylene bushing was designed in 1972.

Related Experiment Videos

  • Humeral component fixation utilized intercondylar and intramedullary methods with methylmethacrylate cement.
  • Muscle and collateral ligament reattachment to preserved condyles was performed for enhanced stability.

    • Main Results:

    • Clinical experience over 16 years in 42 elbows showed a low loosening rate of 7%.
    • Three implants were removed: one for infection, one for fracture, and one for loosening.
    • Follow-up in 31 elbows (27 patients) demonstrated excellent pain relief and average range of motion: 129° flexion, -44° extension, 69° pronation, 61° supination.

    Conclusions:

    • The condylar-sparing constrained hinge elbow prosthesis offers durable clinical results with good functional recovery.
    • The implant design facilitates stable fixation and preserves important anatomical structures.
    • Long-term follow-up confirms the efficacy of this prosthesis in managing complex elbow conditions.