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Short report
Ultrastructural study of the extra-articular Leeds-Keio ligament prosthesis
  1. E Nomura1,
  2. M Inoue2,
  3. H Sugiura3
  1. 1Department of Orthopaedic Surgery, Kawasaki Municipal Hospital, Kawasaki-ku, Kawasaki 210-0013, Japan
  2. 2Department of Orthopaedic Surgery, Isehara-kyodo Hospital, Isehara, 259-1132, Japan
  3. 3Department of Pathology, Kawasaki Municipal Hospital
  1. Correspondence to:
 Dr E Nomura
 Department of Orthopaedic Surgery, Kawasaki Municipal Hospital, 12-1, Shinkawa-dori, Kawasaki-ku, Kawasaki 210-0013, Japan; edk-nomuraspn1.speednet.ne.jp

Abstract

Background: There have been several histological studies of the Leeds-Keio ligament in anterior cruciate ligament reconstruction, but there have been few of the Leeds-Keio ligament in the extra-articular portion.

Aims/Methods: To report the histological and ultrastructural findings of two cases of medial patellofemoral ligament reconstruction using the Leeds-Keio ligament, removed 6.1 years and 8.7 years after implantation.

Results: In both cases, the tissue over the Leeds-Keio ligament was a ligament-like tissue. Electron microscopy showed that the diameter of the collagen fibrils in the tissue over the Leeds-Keio ligament was unimodal in the case investigated 6.1 years after implantation but bimodal in the case investigated after 8.7 years.

Conclusions: The tissue over the Leeds-Keio ligament may continue to grow with prolonged periods of mechanical stress.

  • LK, Leeds-Keio
  • MPFL, medial patellofemoral ligament
  • reconstructed ligament
  • collagen fibril
  • diameter
  • electron microscopy

https://doi.org/10.1136/jcp.2004.024646

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