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Related Experiment Videos

Shoulder function after prosthetic replacement of proximal humerus.

E Olsson1, D Andersson, L A Broström

  • 1Department of Orthopedics, Karolinska Hospital, Stockholm, Sweden.

Annales Chirurgiae Et Gynaecologiae
|January 1, 1990
PubMed
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Custom isoelastic hemiendoprosthesis for proximal humerus replacement in bone tumors and fractures offers stability. However, patients experienced significant pain and limited shoulder function, with rotator cuff insufficiency being a major concern.

Area of Science:

  • Orthopedic Surgery
  • Biomaterials Science
  • Reconstructive Surgery

Background:

  • Proximal humerus replacements are used for bone tumors and comminuted fractures.
  • Isoelastic hemiendoprostheses offer a custom solution for these challenging cases.

Purpose of the Study:

  • To evaluate the long-term clinical and radiographic outcomes of custom-made isoelastic hemiendoprostheses for proximal humerus reconstruction.
  • To assess the functional recovery and complications associated with this prosthetic device.

Main Methods:

  • A retrospective review of eleven patients who underwent proximal humerus replacement with custom isoelastic hemiendoprostheses between 1973 and 1985.
  • Clinical and radiographic assessments were performed with a mean follow-up of seven years (range 3-10 years).

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Main Results:

  • Four patients reported pain at rest, and six experienced severe pain on exertion.
  • Active range of motion was significantly limited (half of passive motion), and shoulder girdle muscles were weak.
  • Despite functional limitations, patients returned to occupations, preserving elbow and hand function; rotator cuff insufficiency was identified as a key issue.

Conclusions:

  • Endoprosthetic replacement of the proximal humerus using custom isoelastic hemiendoprostheses is a safe and reliable option for bone tumors.
  • The procedure provides arm stability and preserves distal limb function, though functional deficits related to the rotator cuff require consideration.