Journal article
Optimizing Graft Placement in Anterior Cruciate Ligament Reconstruction: A Finite Element Analysis
The Journal of knee surgery, Vol.30(2), pp.097-106
02/2017
DOI: 10.1055/s-0036-1581137
PMID: 27119966
Abstract
Abstract
Femoral anterior cruciate ligament (ACL) graft malposition may lead to clinical instability and graft failure. The purpose of this study was to evaluate the effect of ACL graft placement on global knee biomechanics using finite element (FE) analysis. An established nonlinear contact FE model was used to evaluate 25 distinct tunnel loci representing primary ACL reconstructions; knee flexion and a simulated Lachman maneuver was used to assess knee joint laxity, meniscal stress, in situ graft loading, and peak articular cartilage contact pressure for each of the tunnel positions. Increased anterior tibial translation during Lachman testing was observed when the femoral graft was moved from anterior, anterior/inferior, and posterior/inferior relative to the anatomic footprint. Cartilage contact pressure and meniscal stresses increased with anterior graft placement. Peak stresses in the ACL grafts increased with significant posterior and inferior placement (5–7.5 mm) from the anatomic location. Global joint biomechanics are lease favorable with anterior graft placement. Excessive posterior/inferior placement (> 5 mm) may subject grafts to increased pressures.
Details
- Title: Subtitle
- Optimizing Graft Placement in Anterior Cruciate Ligament Reconstruction: A Finite Element Analysis
- Creators
- Robert W Westermann - Department of Orthopaedic Surgery, University of IowaBrian R Wolf - Department of Orthopaedics and Rehabilitation, University of Iowa, Iowa City, IowaJacob Elkins - Department of Orthopaedics and Rehabilitation, University of Iowa, Iowa City, Iowa
- Resource Type
- Journal article
- Publication Details
- The Journal of knee surgery, Vol.30(2), pp.097-106
- Publisher
- Thieme Medical Publishers; 333 Seventh Avenue, New York, NY 10001, USA
- DOI
- 10.1055/s-0036-1581137
- PMID
- 27119966
- ISSN
- 1538-8506
- eISSN
- 1938-2480
- Language
- English
- Date published
- 02/2017
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Orthopedics and Rehabilitation; Physical Therapy and Rehabilitation Science; Athletic Training Program
- Record Identifier
- 9984040014902771
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