Time to treat the tendon rupture induced by surgery: early hypertrophy of the patellar tendon graft site predicts strong quadriceps after ACLR with bone-patellar tendon-bone autograft

Purpose Quadriceps dysfunction is ubiquitous after anterior cruciate ligament reconstruction, especially when using bone-patellar tendon-bone (BPTB) autografts. The role of patellar tendon hypertrophy after graft harvest on knee extensor strength is unknown. The purpose of this study was to determin...

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Bibliographic Details
Published in:Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA sports traumatology, arthroscopy : official journal of the ESSKA, 2023-12, Vol.31 (12), p.5791-5798
Main Authors: Ito, Naoaki, Sigurðsson, Haraldur B., Snyder-Mackler, Lynn, Grävare Silbernagel, Karin
Format: Article
Language:English
Subjects:
Anterior cruciate ligament
Anterior Cruciate Ligament Injuries - surgery
Autograft
Autografts
Autografts - surgery
Biomechanics
Bone-Patellar Tendon-Bone Grafting - adverse effects
Cross-sectional studies
Female
Grafting
Grafts
Humans
Hypertrophy
Hypertrophy - etiology
Hypertrophy - surgery
Knee
Knee extensor torque
Ligaments
Limbs
Loading
Male
Medicine
Medicine & Public Health
Morphology
Orthopedics
Patellar Ligament - surgery
Quadriceps muscle
Quadriceps Muscle - surgery
Sports Medicine
Surgery
Symmetry
Tendon Injuries - surgery
Tendons
Torque
Ultrasonic imaging
Ultrasound imaging
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Summary:Purpose Quadriceps dysfunction is ubiquitous after anterior cruciate ligament reconstruction, especially when using bone-patellar tendon-bone (BPTB) autografts. The role of patellar tendon hypertrophy after graft harvest on knee extensor strength is unknown. The purpose of this study was to determine the predictive ability of patellar tendon (PT) and quadriceps muscle (Quad) cross-sectional area (CSA) on knee extensor strength 1–2 months after ACLR using BPTB autografts. Methods This is a cross-sectional analysis of a cohort 1–2 months after ACLR using BPTB autograft. Peak knee extensor torque, and PT and Quad CSA measured using ultrasound imaging, were collected in 13 males and 14 females. Simple linear regressions compared quadriceps strength index (QI) against limb symmetry index (LSI) in PT and Quad CSA. Multiple linear regressions with sequential model comparisons predicting peak knee extensor torque were performed for each limb. The base model included demographics. Quad CSA was added in the first model, then PT CSA was added in the second model. Results Both PT ( p  
ISSN:0942-2056
1433-7347
DOI:10.1007/s00167-023-07657-9