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Published in: European Journal of Orthopaedic Surgery & Traumatology 4/2018

01-05-2018 | Original Article • KNEE - ARTHROPLASTY

Histopathological analysis of the posterior cruciate ligament in primary osteoarthritis

Authors: Glaucus Cajaty Martins, Gilberto Camanho, Mara Ibis Rodrigues, Luiz Felippe Martins Filho, Marco Kawamura Demange

Published in: European Journal of Orthopaedic Surgery & Traumatology | Issue 4/2018

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Abstract

Background

According to some authors, the indication of an arthroplasty maintaining the posterior cruciate ligament (PCL) demands adequate structural preservation and proprioceptive function of this ligament. The nervous fibers contained in the synovial neurovascular bundle (NVB) around the PCL are involved in proprioception. A study evaluating the grade of PCL and NVB degeneration by using clinical, radiological, and perioperative parameters in knee arthritis patients, in theory, could help surgeons in the decision of preserving or not preserving the PCL in a particular patient.

Questions

(1) Can the degree of the PCL collagen fibers degeneration be predicted by clinical, radiographic, and perioperative parameters in knee arthritis patients? (2) Is the NVB histological degeneration status predictable using clinical, radiographic, and perioperative parameters in the same subset of patients? (3) Is there a correlation between the degree of the PCL collagen fibers degeneration and NVB status in knee arthritis patients?

Methods

Eighty-nine PCLs (85 patients) obtained from total knee replacement surgery were studied. The histologic degeneration of PCL collagen fibers and the NVB status (preserved, degenerated, not detected) were evaluated. These histological degeneration patterns were correlated with clinical and radiographic parameters and with anterior cruciate ligament (ACL) status.

Results

A small prevalence of preserved NVB was related to Grades IV and V of Ahlbäck’s classification, ACL absence, and severe PCL degeneration. The clinical and radiological parameters studied were not able to predict the grade of histological degeneration of the PCL.

Conclusions

Ahlbäck’s classification and ACL status provided useful information about NVB integrity.

Level of evidence

Basic Science Level IV.
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Metadata
Title
Histopathological analysis of the posterior cruciate ligament in primary osteoarthritis
Authors
Glaucus Cajaty Martins
Gilberto Camanho
Mara Ibis Rodrigues
Luiz Felippe Martins Filho
Marco Kawamura Demange
Publication date
01-05-2018
Publisher
Springer Paris
Published in
European Journal of Orthopaedic Surgery & Traumatology / Issue 4/2018
Print ISSN: 1633-8065
Electronic ISSN: 1432-1068
DOI
https://doi.org/10.1007/s00590-018-2136-8

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