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KMID : 0350519950480030835
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Journal of Catholic Medical College
1995 Volume.48 No. 3 p.835 ~ p.843
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Mechanoreceptor Distribution of the Normal, Unrepaired, and Repaired Tendo-Calcaneus after transection in the Rabbit
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Abstract
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Mechanoreceptors have been identified in the articular and periarticular tissues of all major joints of the body. It is known that mechanoreceptors play important roles in carrying out normal joint functions and numerous studies have documented
the
presence of mechanoreceptor endings in articular tissues and periarticular ligaments.
Like these functions and distribution of the mechanoreceptor, we suppose that the mechanoreceptor in tendo-calcaneus is also present. And we also suppose that it is worthwhile to identify the changes of the mechanoreceptor in rege-nerated
tendo-calcaneus. Therefore, this study was conducted to identify the distribution of the mechanoreceptor in the normal and regenerated tendo-calcaneus.
Twenty five mature rabbits-were used for this study. At first, we took normal tendo-calcaneus at bone-tendon junctions and musculotendnous junctions and we observed the mechanoreceptor. And then, we took this result of normal tendo-calcaneus at
bone-tendon junctions as control group. We took regenerated tendo-calcaneus which was repaired at the 3rd week and the 6th week as Group 1 And then we took regenerated tendo-calcaneus which was not repaired at the 3rdd week and the 6th week as
Group
2.
Histologic studies were performed by modified gold-chloride stain for the mechanoreceptors.
@ES The results were as follows ;
@EN 1. There were no encapsulated mechanoreceptors in musculotendinous junction, but free nerve endings which were not true mechanoreceptor existed in paratendinous zone.
2. In normal bone-tendon junctions, all three types of mechanoreceptors were found and the number of mechanoreceptors of bone-tendon insertion zone were much more than the paratendinous zone.
3. In regenerated bone-tendon junctions which were repaired, also all three types of mechanoreceptors were found and the number was not changed.
4. In regenerated bone-tendon junctions which were not repaired, mechanoreceptors were not found.
In conclusion, this study demonstrates that the presence of mechanoreceptor in bone-tendon junctions of tendo-calcaneus and no difference in number of mechanoreceptor between normal and regenerated tendon which is repair of the tendo-calcaneus
immediately after its rupture may preserve the protective function of the tendo-calcaneus.
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