Patellar Fracture Risk Is Not Affected by Harvest Length During Bone-Patellar Tendon-Bone Harvest: A Biomechanical and Ultimate Load-to-Failure Analysis.

Matthew J Partan, Raghunandan Nayak, Rohan Patel, Tomer Korabelnikov, Alyssa DeManche, Elifho Obopilwe, Robert A Arciero, Cory M Edgar, Katherine J Coyner

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Article in Arthroscopy, sports medicine, and rehabilitation, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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9 authors.

Matthew J PartanDepartment of Orthopaedic Surgery, University of Connecticut, Farmington, Connecticut, U.S.A.

Raghunandan NayakDepartment of Orthopaedic Surgery, University of Connecticut, Farmington, Connecticut, U.S.A.

Rohan PatelDepartment of Orthopaedic Surgery, University of Connecticut, Farmington, Connecticut, U.S.A.

Tomer KorabelnikovDepartment of Orthopaedic Surgery, University of Connecticut, Farmington, Connecticut, U.S.A.

Alyssa DeMancheDepartment of Orthopaedic Surgery, University of Connecticut, Farmington, Connecticut, U.S.A.

Elifho ObopilweDepartment of Orthopaedic Surgery, University of Connecticut, Farmington, Connecticut, U.S.A.

Robert A ArcieroDepartment of Orthopaedic Surgery, University of Connecticut, Farmington, Connecticut, U.S.A.

Cory M EdgarDepartment of Orthopaedic Surgery, University of Connecticut, Farmington, Connecticut, U.S.A.

Katherine J CoynerDepartment of Orthopaedic Surgery, University of Connecticut, Farmington, Connecticut, U.S.A.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: To biomechanically assess the impact of different patellar defect sizes on the ultimate load to failure (ULTF) and fracture risk immediately after bone-patellar tendon-bone harvest. Methods: Twelve fresh-frozen mid femur to mid tibia-fibula cadaveric specimens (8 female specimens) with an average age of 75 years (range, 64-88 years) were randomly assigned to a defect length of 20 or 25 mm. A triangular wedge bone block was harvested from the patella, and the defect was measured. The extensor mechanism was loaded until failure with the knee in 30° of flexion. ULTF and failure modes were recorded. Statistical analyses were performed between the 2 groups to identify significance ( Results: Analyses were performed on 10 specimens because 2 were excluded. The average ULTF was not significantly different between the 20- and 25-mm groups (2,313 ± 863 N and 2,443 ± 839 N, respectively; Conclusions: The results of this biomechanical study show that up to a 25-mm-long patellar bone block harvest can be performed safely with a low risk of patellar fracture. Clinical Relevance: There is concern for complications including an increased risk of patellar fracture at the harvest site after bone-patellar tendon-bone autograft harvest. The risk of this complication based on patellar harvest size is not well understood. This study provides biomechanical insights into assessing fracture risk of patellar harvest between 20 and 25 mm in length.

Identifiers

PMID40980244

DOI10.1016/j.asmr.2025.101203

PMCPMC12447131

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