Risk of Chondral Fracture During Implantation of Distal Femur Osteochondral Autograft Plugs: A Human Cadaveric Comparison of Four Different Donor Regions.

IF 2.7 4区 医学 Q1 ORTHOPEDICS CARTILAGE Pub Date : 2024-12-20 DOI:10.1177/19476035241308535
Patrick A Massey, Daniel Hayward, Christian Bonner, Wayne Scalisi, Ryan Taylor, Elise Vincent, Robert W Rutz, Giovanni F Solitro
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Abstract

Introduction: Distal femoral cartilage lesions can be treated using osteochondral autograft transfer (OAT). When impacting plugs into a recipient site, the cartilage may fracture. This study aimed to analyze OAT donor regions and impaction energies to identify characteristics that lead to fracture.

Methods: Fifteen cadaver femurs were used with OAT plugs harvested from the following regions: lateral and medial trochlea (LT and MT), lateral and medial intercondylar notch (LIN and MIN). Plugs were impacted into a bone surrogate block using a custom anvil-type system with pre-determined impact heights; 30, 50, 70, and 90 mm. Each plug's cartilage was examined and determined to be intact or fractured. Chi-square was used to compare the rate of chondral fracture for each region.

Results: In all, 221 plugs were included. The overall rate of chondral fracture was 45.7%. There was a significant difference in the rate of fracture between regions, with LIN, MIN, LT, and MT, having a fracture rate of 46.6%, 62.7%, 25.0%, and 51.9%, respectively (P = 0.001). An impact height of 30 mm resulted in a fracture rate of 17.7%. Increasing the impact height from 30 to 50 mm resulted in significantly increased chondral fracture risk (P = 0.001).

Conclusion: Different donor regions have varying rates of chondral fracture during OAT plug impaction, with the lateral and medial trochlea being the most resistant to chondral fracture at lower forces. Increased impact energy increases risk of chondral fracture. Surgeons should maintain caution and utilize lower impact energy when inserting OAT plugs.

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来源期刊
CARTILAGE
CARTILAGE ORTHOPEDICS-
CiteScore
6.90
自引率
7.10%
发文量
80
期刊介绍: CARTILAGE publishes articles related to the musculoskeletal system with particular attention to cartilage repair, development, function, degeneration, transplantation, and rehabilitation. The journal is a forum for the exchange of ideas for the many types of researchers and clinicians involved in cartilage biology and repair. A primary objective of CARTILAGE is to foster the cross-fertilization of the findings between clinical and basic sciences throughout the various disciplines involved in cartilage repair. The journal publishes full length original manuscripts on all types of cartilage including articular, nasal, auricular, tracheal/bronchial, and intervertebral disc fibrocartilage. Manuscripts on clinical and laboratory research are welcome. Review articles, editorials, and letters are also encouraged. The ICRS envisages CARTILAGE as a forum for the exchange of knowledge among clinicians, scientists, patients, and researchers. The International Cartilage Repair Society (ICRS) is dedicated to promotion, encouragement, and distribution of fundamental and applied research of cartilage in order to permit a better knowledge of function and dysfunction of articular cartilage and its repair.
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