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Biomedical subjects

C Laudet

Publications and source records attributed to C Laudet.

5 recordsLinked to original sources
PubMed1992

[Finger extension. II. Materials and methods].

The study of the extensor apparatus through different methods concerns 200 fingers, the most of fresh cadavers. The dissection through direct observation or with surgical microscope of the dorsal aponeurosis of 30 fingers has been completed by an histological study of 10 fingers. The mechanic properties of each dorsal aponeurotic structure has been tested by extensometry on 12 fingers. The functional study of the role and of the transmission of the different motor components concerns 128 fingers. It has been completed by experimental sections of each aponeurotic structure concerning 20 fingers.

Finger Injuries↗
PubMed1990

Properties of the fibrous structures of the wrist.

Every fibrous structure of ten wrists of fresh cadavers has been the object of an elastometric study. The opposite wrists have been studied surgically and then histologically with the optical microscope. Comparison between the two shows a close relationship between the mechanical features and the morphology of the bundles, which proved also to be perfectly measurable. It also displays the great differences between ligaments and tendons. Histological study of the tendons and ligaments of four other wrists subjected to manoeuvres of axial loading, rupture and bending, reinforces these statements. The therapeutic consequences are considered.

Biomechanical Phenomena↗
PubMedDate not supplied

[Fibrous structures of the wrist. II. Biomechanical study].

Each fibrous structure of the wrist has been studied by elastometric methods. These lead to a classification superposable to the functional classification. They show up the big mechanical differences between to tendons and but to ligaments. The former are 3 to 5 times as solid, but 3 to times less extensible than the latter. These are divided into 3 groups the more fragile as much as they are stretchable. The aponeuroses have their place between tendons and ligaments, but their properties are very closer to the latter.

Biomechanical Phenomena↗
PubMedDate not supplied

[Fibrous structures of the wrist. III. Microscopic study. Rheologic consequences].

Each fibrous structure of 10 wrists of fresh cadavers has been the subject of a study without preparation with the surgical microscope, then of an histological study. These have been compared with the elastometric study of the controlateral homologous structure. The diameter of the fascicles, the length and the amplitude of the undulations of the collagen fibers had shown particularly characteristic. The comparison between both series shows up the close relation between the mechanical properties and the architecture of the fascicles, which is also perfectly measurable. It shows up the big differences between ligaments and tendons. The histological study of the tendons and ligaments of 4 other wrists, submitted to manoeuvres of stretching, of rupture and of incurvation, reinforces these results. The therapeutic consequences are considered.

Cadaver↗