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A complication following ACL reconstruction using bioabsorbable cross-pins.

Eugenio Vecchini1, Gian Mario Micheloni, Valentina Rita Corbo

  • 1. gianmario.micheloni@libero.it.

Acta Bio-Medica : Atenei Parmensis
|April 23, 2016
PubMed
Summary

A migrated bioabsorbable pin after anterior cruciate ligament (ACL) reconstruction caused knee pain and swelling. Surgical removal resolved symptoms, highlighting the importance of proper pin placement in ACL surgery.

Keywords:
ACL complication, rigid fix technique, pin migration, bioabsorbable cross-pin

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Area of Science:

  • Orthopedic Surgery
  • Biomaterials Science

Background:

  • Anterior cruciate ligament (ACL) reconstruction is a common orthopedic procedure.
  • Bioabsorbable pins are used for graft fixation, offering potential advantages over traditional hardware.
  • Complications, though rare, can occur with any surgical implant.

Observation:

  • A 33-year-old male experienced medial knee pain and swelling two months post-ACL reconstruction using bioabsorbable pins.
  • Magnetic Resonance Imaging (MRI) revealed proximal migration of a PLLA pin into the medial soft tissues.
  • The patient's symptoms resolved promptly after surgical pin removal.

Findings:

  • The migrated pin likely caused a foreign-body reaction, leading to inflammation and granuloma formation.
  • Potential causes for pin migration include an excessively long femoral tunnel.
  • Accurate pin placement is critical to prevent implant-related complications.

Implications:

  • This case underscores the potential for bioabsorbable pin migration after ACL reconstruction.
  • Proper surgical technique and tunnel preparation are essential to minimize risks.
  • Prompt diagnosis and intervention can lead to favorable patient outcomes.