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The posterior medial complex disruption.

R G Stone1, F A Barber

  • 1Plano Orthopedic and Sports Medicine Center, Texas 75075.

Orthopedics
|May 1, 1988
PubMed
Summary
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Arthroscopic partial meniscectomy for posterior medial complex disruptions can yield good results, especially when performed promptly. Delayed surgery increases the risk of chondromalacia, negatively impacting outcomes.

Area of Science:

  • Orthopedic Surgery
  • Knee Arthroscopy
  • Meniscal Repair

Background:

  • Complex tears of the medial meniscus posterior horn, termed posterior medial complex disruptions, present a surgical challenge.
  • Arthroscopic partial meniscectomy is a common treatment for these injuries, but functional outcomes require further evaluation.

Purpose of the Study:

  • To assess the functional results of arthroscopic partial meniscectomy for posterior medial complex disruptions.
  • To identify factors influencing surgical outcomes, including delay to surgery and preoperative chondromalacia.

Main Methods:

  • Seventy-five patients with posterior medial complex disruptions underwent arthroscopic partial meniscectomy.
  • Forty-five patients were evaluated 1-6 years post-surgery, including physical and radiographic examinations.

Related Experiment Videos

  • Patients were classified into phases based on preoperative imaging and operative findings of chondromalacia.

    • Main Results:

    • A significant increase in condylar chondromalacia was observed in patients with delays over 6 months (94%) versus less than 6 months (40%).
    • Satisfactory results were achieved in 87% of phase 0/1 patients, 50% of phase 2, and 32% of phase 3.
    • Phase classification proved significant for predicting satisfactory outcomes (P = .0001).

    Conclusions:

    • Prompt surgical intervention for posterior medial complex disruptions is associated with better outcomes and reduced chondromalacia.
    • Preoperative radiographic changes and articular cartilage damage, particularly with advancing age, can compromise results.
    • Clinical improvement suggests benefits from arthroscopic partial meniscectomy, potentially including mechanical washout.