Biomedical subjects

M Stricker

Publications and source records attributed to M Stricker.

At least 19 recordsLinked to original sources

PubMed2006

[Facial fat: descriptive and functional anatomy, from a review of literature and dissections of 10 split-faces].

The aim of this study is to describe the anatomy of the fat in the face, based on a review of the literature and dissections of 10 half-faces. The facial fat can be divided in two layers. The first-one is superficial, between the skin and the superficialis fascia. Its function is essentially protective and its morphological implications are major, especially according to the facial aging. The other layer is deep, under the superficialis fascia. Its principal function is mechanical and its morphological implications are less important. This layer is made of several fat pads in continuity, excepted the buccal fat pad which is separated from the others by its own capsula. The other fat pads are the intra orbialis fat pad, the sub orbicularis oculi fat pad (SOOF), the retro orbicularis oculi fat pad (ROOF), the galeal fat pad and the temporal fat pad.

Adipose Tissue↗

PubMed2006

[Contribution of the pathology examination in the operating theatre in patients with skin cancer: retrospective analysis of 388 patients].

INTRODUCTION: Pathological examination in the operating theatre in patients undergoing resection of a skin cancer is one of the most adapted therapeutic approaches. We present our experience with 388 patients, comparing the rate of recurrence with or without operating-theatre pathological examination. MATERIAL AND METHOD: The study population included 388 patients, mean age 69.5 years (28-98 years) who underwent resection of 544 skin tumors (520 primary and 36 recurrent), 76.6% unique tumors. The pathological examination of the surgical specimen was performed immediately after removal. This method was systematic procedure for spinocellular carcinomas, was not performed for basocellular carcinomas measuring less than 1 cm when well circumscribed and not peri-orifice, and when reconstruction was not planned. RESULTS: The pathological examination was not performed in the operative theatre for 76 tumors; for 470 examinations performed in the operative theatre, at least one surgical margin was positive in 93 (19.8%). Anatomic regions concerned most were the tip of the nose and the eyelids. Recurrent tumors (5.0% of resections) accounted for 27% of the positive pathological results. Thirty-one patients had to have revision surgery, four after a false negative on the pathological examination performed in the operative theatre, four patients for a healing problem and 23 because of tumor recurrence (4%). DISCUSSION: Pathological examination in the operative theatre can help decrease the rate of recurrence in comparison with classical surgery using empiric margins. This method is reliable if performed by an experienced pathologist so that reconstruction can be undertaken before the definitive pathological results are obtained, improving patient comfort. These therapeutic options have a cost however in terms of equipment and personnel. Indications should be well chosen and balanced against the advantages of a two-phase classical procedure.

Adult↗

PubMed2006

[Hypertrophic diseases of facial fatty tissue].

Based on our own experience and a review of the literature, we des-cribe hypertrophic diseases concerning the fatty tissue of the face. Pathological patterns are numerous and polymporphous. Fatty localizations involving the face may be associated or not with specific histological presentation.

Adipose Tissue↗

PubMed2005

[Coverage an irradiated wound of the lower lumbar area with a latissimus dorsi musculocutaneous free flap by lengthening the vascular pedicle with interpositional vein grafts].

Reconstruction of radionecrosis of the lower lumbar area is a challenging problem because of the difficulty of mobilization of the irradiated local tissues, absence of a reliable locoregional procedures and prolongation of the receiving vessels of the free flaps. The ideal treatment is a wide excision of the irradiated tissues and an immediate reconstruction in one step, which is better to be done by using a musculocutaneous flap. The latissimus dorsi musculocutaneous flap is ideal for this indication. The authors prefer to do the revascularization of the latissimus dorsi flap by its'thoracodorsal pedicle because of the possibility to have a high pressure blood flow which allow to use long venous bypass, the exposure of the recipient vessels at the same time of dissecting the flap and to have the anastamosis site away from the irradiated tissue. The authors are presenting their experience in treating a case of radionecrosis in the lower lumbar region with exposed vertebrae by a latissimus dorsi musculocutaneous free flap with exposed vertebrae by a latissimus dorsi musculocutaneous free flap with the lengthening of its'pedicle by two 30 cm interposition saphenous vein grafts.

Follow-Up Studies↗

PubMed2005

[Goal cell carcinoma: really a low malignancy tumor?].

Although basal cell carcinoma often presents as a fairly "benign" lesion early in its course, it remains the most frequent malignancy worldwide. Prevention, while possible, is not always optimal. We show that advanced basal cell carcinoma can be mutilating or even life threatening depending on location, type of lesion, or pre-existing co-morbidity. The consequences of this disease can be lessened if initial treatment does not underestimate its potential severity.

Basal Cell Carcinoma↗

PubMed2004

Microsurgical lip replantation: evaluation of functional and aesthetic results of three cases.

Lip amputations are rare, and microsurgical replantation must be systematically tried to restore form and function in one step. The authors present a series of three cases. Revascularization of the amputated segment was obtained by arterial anastomosis with the corresponding labial coronary artery. No venous anastomosis was carried out, because no vein could be identified. Venous drainage was obtained by inducing bleeding and by postoperative application of leeches for 6 days. Anticoagulant therapy and antibiotherapy were used for 10 days. With this approach, two lip amputations were completely saved, and a third amputation only suffered partial necrosis. Aesthetic and functional results were evaluated as being good, with reestablishment of labial continence and recovery of protective sensitivity.

Adult↗

PubMed2004

[Principles of treatment of total unilateral cleft lip and palate. Suggested protocol].

Complete uni-lateral cleft palates resulting from failed union between internal and external nasal buds cause an imbalance of both superficial and deep nasal structures. After summarizing the principles that should guide the care of these anomalies, the authors present their therapeutic procedure, in which orthopaedic and surgical treatments are intimately associated. They conclude their presentation by emphasizing the difficulty of predicting the definitive result because of the extreme diversity of the sequellae that always accompany the treatment of cleft palates.

Alveolar Process↗

PubMed2004

[Post-orthodontic rehabilitation of the sequellae of alveolar clefts: implantation or periodontal plastic surgery?].

Just as they do for many cranio-facial deformities, the treatment team begins the care of cleft palate patients early and continues treatment over a long period. Throughout the growth period, they perform well-timed interventions and re-evaluations according to the individual plan they have prepared. When growth is completed and the orthopedic and orthodontic corrections have contributed as much as possible to an esthetic and functional equilibrium, a final prosthetic replacement will frequently be required. When the correct edentulous space between the teeth on each side of the defect has been created, or maintained, practitioners can choose between two alternatives: implants or traditional fixed bridges. They should analyze any secondary anatomic discrepancies, severe or superficial, that may have developed, and prepare the best therapeutic pathway for a reconstruction of crestal gingival morphology by means of periodontal surgery.

Alveolar Process↗

PubMed2004

Unicoronal suture immobilization in the fetal rabbit.

Pre-clinical evaluation of surgical procedures aimed to correct craniosynostosis is ideally performed in species of small animals characterized by perinatal brain development, early skeletal maturation, and genuine synostosis in all newborns. It would be nearly impossible to breed such a colony to homozygosity, so most researchers have resorted to artificial postnatal suture immobilization. Our aim was to test the hypothesis that artificial immobilization of a unicoronal suture in the fetal rabbit (25 days of gestation) would result in neurocranial growth alterations similar to those seen in the 9-day postnatally immobilized or congenital synostotic rabbit models. The advantages of prenatal immobilization are that rabbits can undergo the tested corrective procedure at postnatal day 9. This age corresponds to a human age of 6 months and allows the deformity and the effects of its correction to be more readily detected. The heads of 25-day-old fetuses of five time-dated pregnant New Zealand white rabbits were exposed by hysterotomy. The left unicoronal suture of 4 fetuses in each litter was immobilized with a polyglactin suture piercing the frontal and parietal bone plates. The remaining two fetuses were sham-operated. Nine days after spontaneous delivery, all rabbits were marked with four titanium screws close to the sagittal and coronal sutures. Growth was recorded with dorsoventral cephalograms at 9 and 90 days. The group with the immobilized suture showed a small increase in growth across the sagittal sutures. However, the decreases in growth at the unicoronal suture in both the immobilized (5.41-mm difference with sham-treated group) and nonimmobilized (1.17-mm difference with sham-treated group) were significant. Fetal immobilization results in growth alterations similar to those observed after postnatal immobilization.

Animals↗

PubMed2002

Diagnosis and treatment of vascular lesions of the lip.

Many vascular lesions involve the lip. We present the clinical and imaging findings of vascular lesions, including haemangiomas and vascular malformations. We review the changing role of surgery and other treatments in the management of each type of lesion. Haemangiomas are treated surgically only when lip function is substantially impaired. Superselective embolisation is the treatment of choice for arteriovenous malformations, whereas capillary-venous malformations are best treated by operation together with intralesional injection of fibrosing agents. Capillary malformations are usually treated with laser.

Adolescent↗

PubMed2002

[Morphologic disequilibrium of the lips].

The aetiologies of the labial desequilibrium are multiple. They respond to the anomalies of the position and the dimension. The authors will enumerate the different variety and their etiology.

Adult↗

PubMed2002

[Red lip defects. Reconstructive techniques and indications].

The attractive color of the red lip must be the object of very meticulous reconstruction in their form and pigmentation. This can be done only by using the buccal mucosa. The graf is less indicated. There are multiple local flaps that have been proposed using the same lip, the jugal mucosa and the tongue. The authors will show the principal procedures found in the literature.

Humans↗

PubMed2002

[Labial aging. Composition and therapeutic principles].

Labial ageing process combining relaxation, distension and ptosis is aggravated by underlying structure modification: dental and bony. If the inferior lip moves back and collapses, the superior lip will go down and widen. The authors analyse the different ageing process components (intrinsic and extrinsic) as well as therapeutic principles.

Adolescent↗

PubMed2002

[Full thickness defects of the lips. Reconstructive techniques and indications].

The full-thickness tissue loss of the lip leads to the loss of lip continuity. The classic principle is to repair a lip with a lip, giving the best results. Although the size of tissue lost can force to use local flaps, these could be naso-labio-jugal, labio-mental or submental. Even though the microsurgical labial replantation is the technique of choice, unfortunately, most of the time it cannot be done as a result of the situation and the conservation of the avulsed fragment.

Humans↗

PubMed2002

[Labial commissures. Reconstructive procedures and indications].

The commisures are the two extremities of the mouth. They make a big complex in their architecture and their function. Their repairing should have an important attention to their final shape and function. The frequency of the retraction of the scarring tissue imposes additional muscular exercise which has to be premature, intense, and prolonged.

Humans↗

PubMed2002

[Labial balance].

The labial balance appreciated by statics and movement is the guarantee of morphology, bilabial competence and symmetry in function (ou bien in movement?). The restoration of the lips aims for this balance, the basic axiom is "to repair the lip by the lip". Three main technical forms meet these requirements: forward movement, rotation and transposition.

Biomechanical Phenomena↗

PubMed2001

[Development of the maxilla in patients with complete unilateral cleft palate surgically treated by a periosteal transplantation technic. A retrospective study of 15 surgical cases with an 18 year follow-up].

PURPOSE: The aim of this study was to assess retrospectively the long-term growth of the maxilla in subjects with unilateral total cleft treated initially with the tibial periosteal graft technique. PATIENTS AND METHODS: The study group included 15 patients with a mean 18 years follow-up (range 15-20 years). All patients had been operated on by the same surgeon. Only patients in stage DP3, one to two years after peak growth were retained for review. Delaire's architectural analysis was used to study anteroposterior and vertical growth of the maxilla. Transverse growth was studied with the Mars occlusal score. Bone generation induced by the periosteum was studied using the Björk Holmgren analysis. The quality of the palatine and nasal repair was studied using Pruzansky's criteria. RESULTS: Anteroposterior and vertical growth led to a normal maxilla in 53.3% of the cases and a moderate to severe retromaxilla (> 5 mm) in 46.7%. Complete symmetry was achieved for the nasal fossae in 20% of the cases and marked asymmetry was noted in 26%. The height of the nasal fossae was symmetrical in 60% of the cases with marked asymmetry in 26%. Mean production of alveolar bone reached 58% of the height of the alveolar bone filling. It was good in 46.6% of the cases, fair in 26.7% and weak in 26.7%. The occlusal score evidenced crossed occlusion in 33.3% of the cases for a hemisection and in 46.7% of the cases for an anterior section. Normal occlusion was achieved in 20%. The quality of palatine repair was found to be good with a normal mucosa in 86.7% of the cases. A fistula was present in 13.3%. CONCLUSION: The preoperative objectives of periosteal graft repair of unilateral complete clefts were achieved. This technique provides a closed scar-free palate. Nasal repair favored the development of an ample and functional airway. The periosteal graft produced bone in the anterior portion allowing a harmonious premaxillary region and stable nose support.

Adolescent↗

PubMed2001

[Orthopedic treatment of labio-maxillo-palatal clefts: our approach].

Many authors use a preliminary orthopedic procedure before cleft lip and palate surgical closure in order to prevent possible bone distortion following the rupture of the muscle belts resulting from the cleft. Actually, this is generally not only an orthopedic treatment but rather a surgical orthopedic step which includes lip adhesion before the surgical closure of the clefts. Following the procedures proposed by Georgiade and Latham, we have used since 1996 a treatment based on traction applied with an elastic chain on splints attached by transmaxillary pins for certain types of clefts, namely unilateral complete clefts with endognathy of the small fragment, unilateral complete clefts larger than 7 mm, bilateral wide complete clefts with premaxilla protrusion, and bilateral wide complete clefts with collapsus and premaxillary protrusion. Technical procedures vary with the type of cleft. Standard procedures with or without jacks are used for the other types of complete clefts. These orthopedic procedures with elastic traction are performed between the 3rd and 6th week, before lip adhesion of the upper part of the lip (combined with release of skin and subcutaneous tissues from the underlying alar cartilage). A palatine plate with or without a jack, fitted most of the time with a spring for nostril support, is then inserted until surgical closure.

Bone Nails↗