[Theory of formation of the postmortem muscle contraction ridge during mechanical stimulation of skeletal muscles].

Abstract

The study aimed to develop a theory of the formation of the postmortem muscle contraction ridge with mechanical stimulation of skeletal muscles. We determined the distribution of stress arising in the muscle as a result of a local impact. No muscle contraction ridge developed in the series of 10 experiments, where Gd³⁺ was impregnated into muscle tissue using electrophoresis before the test for idiomuscular contracture. The authors theorized that the muscle contraction ridge develops due to the activation of mechanosensitive channels. The terms «mechanically induced contracture» and «mechanosensory contracture» were proposed to determine the postmortem muscle contraction ridge resulting from mechanical stimulation of skeletal muscles since they more accurately reflect the essence of the phenomenon under consideration.