Abstract
BackgroundTo determine if tibial tunnel reaming during anatomic single-bundle anterior cruciate ligament (ACL) reconstruction using hamstring autograft can result in anterolateral meniscal root injury, as diagnosed by magnetic resonance imaging (MRI).MethodsA case series of 104 primary anatomic single-bundle ACL reconstructions using hamstring autograft was retrospectively reviewed. Pre- and post-operative (>1 year) MRIs were radiologically evaluated for each patient, with a lateral meniscus extrusion > 3 mm at the level of the medial collateral ligament midportion on a coronal MRI, to establish anterolateral meniscal root injury.ResultsNo patients presented radiological findings of anterolateral meniscal root injury in this case series.ConclusionsExamining a single-bundle ACL reconstruction technique using hamstring autograft that considered tibial tunnel positioning in the center of the tibial footprint, this case series found no evidence of anterolateral meniscal root injury in patient MRIs, even more than 1-year post-operation.
Highlights
To determine if tibial tunnel reaming during anatomic single-bundle anterior cruciate ligament (ACL) reconstruction using hamstring autograft can result in anterolateral meniscal root injury, as diagnosed by magnetic resonance imaging (MRI)
The purpose of this study was to determine if tibial tunnel reaming during anatomic ACL reconstruction could result in an anterolateral meniscal root (ALMR) tear, as diagnosed by magnetic resonance imaging (MRI)
Isolated ACL reconstruction was performed in 85 cases (81.7%), while an associated arthroscopic procedure was performed in 19 cases (18.3%, partial medial meniscectomy)
Summary
To determine if tibial tunnel reaming during anatomic single-bundle anterior cruciate ligament (ACL) reconstruction using hamstring autograft can result in anterolateral meniscal root injury, as diagnosed by magnetic resonance imaging (MRI). Methods: A case series of 104 primary anatomic single-bundle ACL reconstructions using hamstring autograft was retrospectively reviewed. Pre- and post-operative (>1 year) MRIs were radiologically evaluated for each patient, with a lateral meniscus extrusion > 3 mm at the level of the medial collateral ligament midportion on a coronal MRI, to establish anterolateral meniscal root injury. Results: No patients presented radiological findings of anterolateral meniscal root injury in this case series. Conclusions: Examining a single-bundle ACL reconstruction technique using hamstring autograft that considered tibial tunnel positioning in the center of the tibial footprint, this case series found no evidence of anterolateral meniscal root injury in patient MRIs, even more than 1-year post-operation. A cadaveric study showed that a tunnel reamed in the center of the tibial footprint can cause a significant decrease in the attachment area and, in the strength of the Irarrázaval et al Journal of Experimental Orthopaedics (2017) 4:17
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