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Biomedical subjects

V Mitz

Publications and source records attributed to V Mitz.

At least 55 records · Page 3Linked to original sources
PubMed1986

Current face lifting procedure: an attempt at evaluation.

There are many techniques currently available for face lifting. The individual choice should be made based upon solid knowledge of anatomy and physiology as well as upon knowledge of long-term results in operated patients. In the absence of scientific information regarding deterioration of skin and muscle tension after operation, the only valid basis for judgement is a combination of the surgeon's assessment and the patient's degree of satisfaction 10 years after the operation. The latter is often impossible to obtain. The recently proposed deep undermining of the superficial musculoaponeurotic system (SMAS) seems both excessive and potentially dangerous. An evaluation of 30 consecutive patients would seem to indicate that a segmental approach, along with tightening of the platysmal and genioparotid layers of the SMAS, gives good immediate results and may be responsible for longer-lasting results.

Evaluation Studies as Topic↗
PubMed1986

The fasciocutaneous flap as an alternative solution in difficult reconstructive problems.

Fasciocutaneous flaps are available anywhere in the body, literally from head to foot. Some hair-bearing flaps, the parasternal flap, and some forearm and lower extremity flaps may be useful for coverage of soft tissue defects when a relatively simple one-stage procedure is preferred. The fasciocutaneous flaps described here are long and narrow, with a length to width ratio of up to 5:1. Although these flaps are not the ultimate solution to all reconstructive problems, they are especially useful in the treatment of burn scar contractures and chronic ulcerations such as those that result from the extravasation caused by chemotherapeutic agents. Of particular importance is the fact that the use of these flaps does not preclude the use of other flaps later, should this be necessary. Specific indications for these flaps must always be kept in mind in relation to other reconstructive alternatives.

Adolescent↗
PubMed1986

Risk and consequence of infection at the site of microsurgical repair: an experimental model.

The consequences of postoperative infection at the site of microsurgical repair were studied. The experiment used 60 Wistar rats which were divided into 3 groups of 20 each. The femoral artery, vein, and nerve were transected unilaterally and repaired using microsurgical techniques. Staphylococcus aureus was then inoculated into the wound of group 1. Beta-hemolytic Streptococcus was inoculated into the wound of group 2. Group 3 rats served as controls. Clinical, anatomical, bacteriological and histopathological examinations were performed on postoperative days 8 and 30. Wounds in which S. aureus was inoculated demonstrated a significant tendency toward vascular thrombosis with extensive tissue destruction. In the majority of these cases, the necrosis caused by the primary infection engendered an associated, opportunistic infection. Streptococcal inoculations in group 2 demonstrated less severe changes than in group 1. These changes were characterized by injury of the vascular structures themselves with a significant tendency for thickening of the arterial wall, perivascular inflammation, and hematoma formation at the site of the repair. This model allows demonstration of the enzymatic and toxic consequences of bacterial infection in a postoperative site characterized by cellular destruction and interstitial edema surrounding foreign bodies represented by sutures.

Animals↗
PubMed1986

Second toe to thumb transfer with extensor digitorum brevis opponensplasty.

A second toe to hand transfer is described for thumb reconstruction which includes the extensor digitorum brevis as a simultaneous opponensplasty. This procedure was effective in a young man injured in a bomb explosion that completely destroyed the first ray. The second toe was dissected in continuity with the extensor digitorum brevis muscle, its nerve was anastomosed to the motor branch of the median nerve. Thus a one-stage operation allowed a complete reconstruction of the first ray proximally to the trapezium. Recovery at 2 years is good, and the muscle transfer can be demonstrated to work.

Adolescent↗
PubMed1985

[Transformation of skeletal muscle by progressive sequential stimulation with a view toward its use as a myocardial substitute].

Progressive sequential stimulation of a skeletal muscle using trains of 30 Hz impulses with increasing frequencies from 20/min. to 80/min. within 3 months, allowed us to obtain in goats a transformation of the fast twitch glycolytic muscular fibers into fatigue resistant slow twitch oxidative muscular fibers. The conditioned muscle can be used in the treatment of various myocardial lesions or to reinforce cardiac contractility in severe cardiac insufficiencies. The first clinical case successfully operated upon is reported.

Adult↗
PubMed1984

Functional sequelae after ulnar nerve repair. Study of forty-nine cases.

The full picture of functional ulnar deficiency, following suture or grafting, was studied and analyzed by two of the authors, who followed this series of patients on a long-term basis. The patients were tested using sphygmometric rubber bulbs in other to determine the overall closing force of the hand (making a fist), and the force of the pinch between the thumb and index ("energetic pinch"). Moreover, radionuclide vascular tests were used in order to find an eventual etiology of the "cold" disease, present in 2/3 of these injured hands. The principal functional deficiencies which bothered the patients and which we were able to demonstrate are as follows: deficient adduction of the thumb: the pinch between the thumb and index is diminished by approximately 50%, impairment, in the spreading of fingers, impairment in the overall force of the grasp, ulnar clawing which may embarrass function of the hand one year after the operation in one fourth of the cases. Therefore it appeared logical to propose an adduction plasty at the same time of repair, whether it was a primary suture or a secondary nerve graft. This adduction plasty uses the flexor digitorum sublimis of the ring finger which is rerouted and passed behind the profondus tendons and brought over to the lateral sesamoid bone of the thumb. This transfer is prolonged and tacked to the extensor pollicis longus in order to prevent the hyperflexion of the proximal phalanx of the thumb of which patients hardly ever complain but which denotes the severeness of ulnar nerve injury. An excellent correlation exists between the severeness of the functional deficiency and the importance of Froment's sign. The study of the other residual deficiencies shows that the restoration of the first dorsal interosseus, the reinforcement of the force of the flexores digitorum profundus of the middle and fourth fingers and of the intrinsics does not seem to be justified on an emergency basis. Zancolli's operation, which has been advocated by certain authors as an emergency procedure, does not seem to be necessary at this stage of repair, but remains a very interesting palliative procedure one year after the nerve repair if still judged necessary. Several clinical examples illustrate the value of long-term follow-up of these operated patients.

Adolescent↗