Abstract
ABSTRACTPetersen, I. and B. Stener. Experimental evaluation of the hypothesis of ligamento‐muscular protective reflexes. III. A study in man using the medial collateral ligament of the knee joint.The tension in the ligament was increased in a natural way by forcibly trying to abduct the tibia on the femur. During such stimulation the motor activity in sartorius, semimembranosus and vastus medialis (i. e. in muscles capable of opposing an increase in tension in the ligament) was studied by electro‐myography. In 35 subjects (using 43 normal knee joints) it was never possible to detect any reflex motor effects ascribable to stimulation of receptors in the ligament. This is in close agreement with the results obtained by Andersson and Stener (1959) in cat. and is not in accordance with the hypothesis, put forward in the literature, that tension receptors in ligaments elicit a protective muscular reflex.
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