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The "arthroscopic impingement test"

J J Warner1, S Kann, L M Maddox

  • 1Department of Orthopaedic Surgery, University of Pittsburgh, Pennsylvania 15213.

Arthroscopy : the Journal of Arthroscopic & Related Surgery : Official Publication of the Arthroscopy Association of North America and the International Arthroscopy Association
|April 1, 1994
PubMed
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A new arthroscopic impingement test improves shoulder surgery reliability. This technique verifies adequate acromial resection, reducing impingement syndrome failures and ensuring sufficient subacromial space.

Area of Science:

  • Orthopedic Surgery
  • Sports Medicine
  • Arthroscopy

Background:

  • Shoulder impingement syndrome is often treated with arthroscopic acromioplasty.
  • Inadequate acromial resection can lead to procedure failure in technically demanding arthroscopic acromioplasty.
  • Assessing subacromial space (SSA) post-procedure is crucial for successful outcomes.

Purpose of the Study:

  • To introduce and evaluate a novel "arthroscopic impingement test" for reliable arthroscopic acromioplasty.
  • To determine the subacromial space available (SSA) during shoulder flexion after acromioplasty.
  • To enhance the reliability of arthroscopic acromioplasty by verifying adequate acromial resection.

Main Methods:

  • A modified arthroscopic acromioplasty technique incorporating the "arthroscopic impingement test" was used in 50 patients (Group II).

Related Experiment Videos

  • A control group (Group I, 70 patients) underwent conventional arthroscopic acromioplasty.
  • Subacromial space (SSA) was measured at various degrees of shoulder flexion post-acromioplasty.

    • Main Results:

    • The modified technique (Group II) had no failures, with average SSA at 120 degrees flexion measuring 6 mm.
    • The conventional technique (Group I) had a 6% failure rate due to inadequate acromioplasty, with 0 mm SSA at 120 degrees flexion.
    • The "arthroscopic impingement test" identified four cases requiring revision during the initial surgery due to inadequate SSA.

    Conclusions:

    • The "arthroscopic impingement test" significantly improves the reliability of arthroscopic acromioplasty.
    • This technique ensures adequate acromial resection by verifying sufficient subacromial space during shoulder flexion.
    • The modified approach reduces failure rates for shoulder impingement syndrome treatment.