Medial meniscus grafting restores normal tibiofemoral contact pressures

Medial meniscus grafting restores normal tibiofemoral contact pressures Background Tissue excision in the setting of a meniscal tear has been shown to dramatically increase peak contact stresses in the affected tibiofemoral joint compartment, leading to the development of degenerative changes and osteoarthritis. Purpose/hypothesis The current in vitro study utilized a porcine model to evaluate the effectiveness of segmental medial meniscal grafting following partial meniscectomy. The study hypothesis was that the procedure would normalize medial tibofemoral joint compartment pressure magnitudes, areas, and locations relative to an intact meniscus. Study design Controlled laboratory study. Methods Using pressure film, medial tibiofemoral joint compartment peak, and mean pressure magnitudes, peak pressure location and peak pressure area were determined using 12 potted, fresh frozen, porcine knee specimens. Data were collected at three different knee flexion angles (90°, 45°, and 0°) for three conditions: intact medial meniscus, following resection of the central third of the medial meniscus, and following segmental medial meniscal grafting. For each condition, the potted femur was positioned horizontally in a bench vise clamp, while a 20 pound (88.96 N) axial compression force was manu- ally applied for a 60 s duration by the primary investigator through the base of the potted tibia using a digital force gauge. Results Loss of the central http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Orthopaedic and Trauma Surgery Springer Journals

Medial meniscus grafting restores normal tibiofemoral contact pressures

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Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer-Verlag GmbH Germany, part of Springer Nature
Subject
Medicine & Public Health; Orthopedics
ISSN
0936-8051
eISSN
1434-3916
D.O.I.
10.1007/s00402-017-2849-x
Publisher site
See Article on Publisher Site

Abstract

Background Tissue excision in the setting of a meniscal tear has been shown to dramatically increase peak contact stresses in the affected tibiofemoral joint compartment, leading to the development of degenerative changes and osteoarthritis. Purpose/hypothesis The current in vitro study utilized a porcine model to evaluate the effectiveness of segmental medial meniscal grafting following partial meniscectomy. The study hypothesis was that the procedure would normalize medial tibofemoral joint compartment pressure magnitudes, areas, and locations relative to an intact meniscus. Study design Controlled laboratory study. Methods Using pressure film, medial tibiofemoral joint compartment peak, and mean pressure magnitudes, peak pressure location and peak pressure area were determined using 12 potted, fresh frozen, porcine knee specimens. Data were collected at three different knee flexion angles (90°, 45°, and 0°) for three conditions: intact medial meniscus, following resection of the central third of the medial meniscus, and following segmental medial meniscal grafting. For each condition, the potted femur was positioned horizontally in a bench vise clamp, while a 20 pound (88.96 N) axial compression force was manu- ally applied for a 60 s duration by the primary investigator through the base of the potted tibia using a digital force gauge. Results Loss of the central

Journal

Archives of Orthopaedic and Trauma SurgerySpringer Journals

Published: Dec 2, 2017

References

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