Biomechanics of knee rehabilitation with cycling

@article{Mcleod1980BiomechanicsOK,
  title={Biomechanics of knee rehabilitation with cycling},
  author={William D. Mcleod and Turner A. “Tab” Blackburn},
  journal={The American Journal of Sports Medicine},
  year={1980},
  volume={8},
  pages={175 - 180}
}
The bicycle provides quadriceps rehabilitation while controlling the stresses to the knee ligaments. With pedaling on the bicycle, forces are applied to the anterior cruciate ligament, the cap sular ligaments, and the posterior structures of the knee joint as the tibial plateau is posteriorly tilted. The knee muscles can modify their forces. Therefore, by controlling the mode of cycling with varying seat heights and pedal positions, the ligaments can be relieved from these forces during the… 

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References

SHOWING 1-10 OF 19 REFERENCES
Biomechanics of ligament failure. II. An analysis of immobilization, exercise, and reconditioning effects in primates.
TLDR
After eight weeks of immobilization, anterior cruciate bone-ligament-bone preparations of wild primates tested in tension showed significant decreases in maximum failure load and energy absorbe.
Effect of exercise upon ligament strength.
TLDR
Results showed that there was a direct relationship between ligament strength, as measured in this experiment, and the degree of mobilization of the knee joint evidenced in the four exercise programs.
Exercise effects on the strength of the rat anterior cruciate ligament
TLDR
It is shown that endurance-type exercise is beneficial to the anterior cruciate ligament as both strength and stiffness are increased and functionally the ligament remains unchanged by exercise.
The influence of physical activity on ligaments and tendons.
TLDR
It was concluded that the mechanical stress produced by chronic exercise is an important determination of the strength of repaired ligaments and of the junctions between ligaments (or tendons) and bones.
Functional Properties of Knee Ligaments and Alterations Induced by Immobilization: A Correlative Biomechanical and Histological Study in Primates
  • F. Noyes
  • Biology, Engineering
    Clinical orthopaedics and related research
  • 1977
TLDR
The effect of immobility on the biomechanical properties of an anterior cruciate bone-ligament-bone unit of rhesus monkey is reported and a significant alteration in the projected functional capacity of the ligament unit to resist loading and to resist elongation is indicated.
Tibial plateau topography
TLDR
The path followed by the lateral femoral condyle during the "screw home mechanism" and caused by joint contour has been clearly demonstrated and it is hoped that this experimental evidence will establish itself as the basis for understanding the anatomy of the proximal tibial surface.
Elasticity and tensile strength of the anterior cruciate ligament in rabbits as influenced by training.
  • A. Viidik
  • Biology, Engineering
    Acta physiologica Scandinavica
  • 1968
TLDR
The effects of training in a running machine were studied on nineteen rabbits while seventeen of the same stock were used as controls and it was concluded that the weakest point in the system of tibia-ligamentum cruciatum anterius—femur is one of the bony attachments and most often the tibial one.
Influence of physical activity on ligament insertions in the knees of dogs.
TLDR
The widespread subperiosteal bone loss consequent to inactivity probably healed in the same way, suggesting on the basis of this histological evidence that inactivity produces bone resorption which is followed by bone accretion.
The New Aerobics
Coronary Heart Disease: Prevention, Detection, Rehabilitation With Emphasis on Exercise Testing
TLDR
This jumbo loose-leaf book is a part of what is labeled a "learning system," specially aimed at applications of exercise for diagnosis, rehabilitation, and risk factor modification in coronary heart disease, and is a pleasant and refreshing surprise.
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