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Biomedical subjects

C Gillot

Publications and source records attributed to C Gillot.

At least 37 records · Page 2Linked to original sources

[Functional and mechanical anatomy of arm elevation].

Experimental work on the functional anatomy of the shoulder has involved a study of the conditions involved in elevation of the arm. Movements of the upper limb are organised round a very special alignment of the scapulo-humeral joint whose geometric features and exact position have been determined. The ligaments of the joint play a major role in the controlling the attainment of this alignment. The value of this alignment in the physiology of the shoulder is demonstrated. A new terminology of shoulder movement is suggested.

Arm↗

The anatomy of erection.

Erection is due to a neurovascular mechanism: an inflow of arterial blood and an obstruction of venous return. The direction of this mechanism is of neurologic origin: (1) control of the smooth muscle tissue of the corpora cavernosa by the autonomic system controlled by reflex centers in the cord or cortical centers accessible to multiple (visual) stimuli (2) control of the perineal muscles by the somatic system. Tumescence is due to a reduction in the alpha-sympathetic tonus of the cavernous tissue permitting influx of arterial blood, and to decreased venous flow from compression of the subalbugineal venous network against the tunica albuginea of the corpus cavernosum. Once this obstruction to the venous return has been achieved, the arterial flow in the corpora cavernosa decreases but persists; the arterial blood in the corpora cavernosa is renewed and not shut off. Rigidity is due to an increase in intracavernous arterial pressure simultaneous with contraction of the perineal muscles (ischiocavernosus) under the somatic control of the pudendal nerve.

Animals↗

Anatomic basis of ligamentous control of elevation of the shoulder (reference position of the shoulder joint).

The authors describe in detail the position of greatest stability of the shoulder joint. They review the mechanical importance of this position in the overall physiology of the shoulder-girdle and stress the essential role of two articular ligaments of the shoulder joint (the coracohumeral and inferior glenohumeral ligaments) in arrival at this reference position. There thus exists a passive control, of ligamentous origin, of movements of the shoulder-girdle. The position is essential if the shoulder is to benefit from the full range of movement and full stability which it needs in every day functioning.

Humans↗

[The clavi-pectoral route].

The clavi-pectoral route provides a limited approach to the axillary vessels as they emerge from the costal-subclavian outlet. The incision is oblique, following the course of the axillary vein. The greater pectoral muscle is split parallel to its fibres, and the smaller pectoral muscle is merely retracted. Only one nerve is exposed: the medial pectoral nerve. The vessels are controlled on à length of 4 to 5 cm, enough for catheterization, thrombectomy or central implantation of an axillo-femoral prosthesis. A technical device improves exposure of the artery and ensures haemostasis. The same route can be used for wide anterior resection of the first rib, a necessary stage in venous obstruction clearance, surgery of the outlet syndrome and wide access to the first ganglia of the thoracic sympathetic cord.

Axilla↗

[Medial approach to the anterior tibial artery].

The medial, transmembranous route is a simple way of approaching the anterior tibial artery in its middle third. The limb is elevated, the leg flexed and the thigh placed in external rotation. The incision, which follows the course of the great saphenous vein, begins 10 cm above the tibial malleolus and is 10 cm long. The soleus and long flexor muscle of toes are gently disinserted, and the posterior tibial muscle is retracted to expose the interosseous membrane which is split, displaying the artery. The main indication of this technique is tibio-saphenous bypass in situ, but the bypass can be performed with the posterior tibial artery or the peroneal artery, using the same approach.

Arteries↗

[Medial approach to the distal deep femoral artery].

By placing the thigh in external flexion-rotation the deep femoral artery can readily be approached downstream the first perforating artery. The medial route respects the inguinal lymph nodes, approximately follows the internal saphenous vein axis, provides wide exposure of the artery and offers a wide range of courses for different bypasses.

Femoral Artery↗

[Anatomical study of the verumontanum of the urethra].

Five samples of infra-montanal prostatic urethra, fixed in formalin and stored in liquid nitrogen at -30 degrees C were examined histologically. The results of this study demonstrated that muscle fibres of the striated sphincter extend as far as the level of the veru montanum. The proportion of rapid and slow striated fibres was identical. These striated fibres were mixed with smooth muscle fibres of the urethra. The density of innervation of this muscular tunic was found to increase closer to the striated sphincter; it is composed of equal numbers of adrenergic and cholinergic fibres.

Humans↗

[Hemostasis of the preprostatic veins in total cystoprostatectomy. Anatomical bases].

An anatomical study has enabled the authors to propose a diagrammatic description of pre-prostatic veins, the haemostasis of which is one of the difficult stages in total cystoprostatectomy for cancer. These veins are surrounded by the pubovesical ligaments but they are separated from the membranous urethra by a cleavage plane which can be used to control venous bleeding.

Hemostasis, Surgical↗

Anatomical bases of kidney transplantation in man.

Kidney transplantation is a well codified operation. The way to reduce surgical complications (urological and vascular) lies in a precise knowledge of the anatomy of the renal pedicle, as well as of the ureter and its vascularization. The choice of a site for implantation depends on anatomical arguments which aim at using a well vascularised ureter, and so a short one, and a renal pedicle without tension, with therefore a long or extended renal vein. A privileged site for transplantation is the right or left iliac fossa; transplantation in the lumbar fossa remains exceptional.

Histological Techniques↗

Anatomical basis of the surgical approach to the membranous urethra.

The pars membranacea is the short segment of the urethra traversing the floor of the perineum. The main anatomical obstacles encountered in the approach to the membranous urethra are the perineal body posteriorly, and the deep dorsal vein of the penis and preprostatic venous plexus, anteriorly. These obstacles must be borne in mind when performing a surgical approach to the membranous urethra. The perineal body is the main obstacle to the perineal approach and can be avoided by incision of the sagittal raphes (anobulbar and rectourethral raphes) posterior to it and up to the apex of the prostate. When the trans-symphysial or transpubic approach is used, detachment of the suspensory ligament and roots of the penis allows exposure of the preprostatic venous plexus whose inferior part lies over the membranous urethra.

Abdomen↗

Anatomical basis of total prostatocystectomy in man.

In the first part of this paper special emphasis is given to the anatomy of Denonvillier 's fascia which is derived from the prostatic capsule and covers the seminal vesicles, and to the preprostatic veins. In the second part devoted to the surgical technique of total prostatocystectomy the authors propose that the vesicoprostatic unit be freed by dissecting posterior to Denonvillier 's fascia. It is also proposed that the membranous urethra be sectioned prior to performing hemostasis of the preprostatic veins.

Fascia↗

[Santorini's venous plexus].

This article provides an anatomical study of Santorini's venous plexus based on forty dissections. The authors present a sketch of the plexus and its housing and suggest surgical applications of this anatomic sketch.

Humans↗

[The medio-femoral approach].

The authors report a series of thirty A. profunda femoris dissections by anterior approach: the medio femoral way, which is enabled to isolate an arterial segment of six centimeters.

Aged↗

[Peroperative sclerosis].

Complete, rapid destruction of the insufficient surface network as a one-stage procedure constitutes the best method for prevention of trophic disorders and especially pigmentation. Marked, rapid regression is obtained when these have unfortunately become installed. Combined surgery and multiple peroperative injections of a sclerosant allows the exclusive use of a gently acting sclerosant, 66% glucose solution, which is particularly well tolerated.

Animals↗