Cited by 97Knee injuries and reconstruction techniquesLower Extremity Biomechanics and PathologiesTendon Structure and Treatment

Anterior Cruciate Ligament Fatigue Failures in Knees Subjected to Repeated Simulated Pivot Landings

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Lipps, David B., Wojtys, Edward M., Ashton-Miller, James A.·2013·The American Journal of Sports Medicine

Abstract

BACKGROUND: It is not known whether the human anterior cruciate ligament (ACL) is susceptible to fatigue failure as a result of repetitive loading or whether certain knee morphologic characteristics increase that risk. HYPOTHESES: The number of knee loading cycles required to fail an ACL by fatigue failure is unaffected by the magnitude of the external load delivered to the knee joint. Furthermore, sex, ACL cross-sectional area, and lateral tibial slope will not affect the number of loading cycles to ACL failure. STUDY DESIGN: Controlled laboratory study. METHODS: Knee pairs from 10 cadaveric donors (5 female) of similar age, height, and weight were imaged with 3-T magnetic resonance imaging to measure lateral tibial slope and ACL cross-sectional area. One knee from each pair was then subjected to repeated application of a load of 3 times body weight (3*BW), while the other knee was subjected to a 4*BW load, both involving impulsive compression force, knee flexion moment, and internal tibial torque combined with realistic trans-knee muscle forces. The resulting 3-dimensional tibiofemoral kinematics and kinetics were recorded, along with ACL relative strain and quadriceps, hamstring, and gastrocnemius muscle forces. The loading cycle was repeated until the ACL ruptured, a 3-mm increase in cumulative anterior tibial translation occurred, or a minimum of 50 trials was reached. RESULTS: Eight of 10 knees failed under the 4*BW load (mean ± SD cycles to failure, 21 ± 18), while 5 of 10 knees failed under the 3*BW load (mean ± SD cycles to failure, 52 ± 10). Four knees exhibited a 3-mm increase in anterior tibial translation, 7 knees developed partial or complete visible ACL tears, and 2 knees developed complete ACL tibial avulsions. A Cox regression showed that the number of cycles to ACL failure was influenced by the simulated landing force (P = .012) and ACL cross-sectional area (P = .022). Donor sex and lateral tibial slope did not influence the number of cycles to ACL failure. CONCLUSION: The human ACL is susceptible to fatigue failure when pivot landings of 3*BW or more load the knee repeatedly within a short time span. An ACL with a smaller cross-sectional area is at greater risk for this type of failure. CLINICAL RELEVANCE: The results show that the human knee can only withstand a certain number of 3*BW or greater jump loading cycles within a short time period before the ACL will fail. Therefore, limiting the increase in the number and severity of pivot landing maneuvers performed over a week of training would make sense from an injury prevention viewpoint.

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Authors
Lipps, D. B., Wojtys, E. M., & Ashton-Miller, J. A.
Affiliations
  • University of Michigan (US)
  • Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
Corresponding author
Lipps, David B.
Venue
The American Journal of Sports Medicine
Published
2013-03-04
Volume
41
Issue
5
Pages
1058-1066
ISSN
  • 0363-5465 (ISSN-L)
  • 1552-3365
OpenAlex
W2125005886
Cited by
97
References
49
Citations by year
2026: 6 · 2025: 6 · 2024: 2 · 2023: 11 · 2022: 16 · 2021: 11 · 2020: 9 · 2019: 9 · 2018: 4 · 2017: 2 · 2016: 9 · 2015: 8 · 2014: 4
FWCI
6.90
Type
journal article
Language
en
Open access
Locations
  • The American Journal of Sports Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute on Aging (P30AG024824)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR054821)
Topics
  • Health Sciences › Medicine › Surgery › Knee injuries and reconstruction techniques
  • Physical Sciences › Engineering › Biomedical Engineering › Lower Extremity Biomechanics and Pathologies
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Tendon Structure and Treatment
Keywords
anterior cruciate ligament, fatigue failure, cadaveric knee, lateral tibial slope, sex differences, landing forces, anterior tibial translation, anterior cruciate ligament rupture, tibiofemoral kinematics, knee biomechanics, ACL injury risk factors, sports injury prevention
MeSH terms
Anterior Cruciate Ligament Injuries, Body Weight, Cadaver, Fatigue, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Movement, Stress, Physiological, Stress, Mechanical, Proportional Hazards Models, Anterior Cruciate Ligament, Compressive Strength, Torque

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