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Biomedical subjects

F A Quereshy

Publications and source records attributed to F A Quereshy.

8 recordsLinked to original sources

The efficacy of bioresorbable fixation in the repair of mandibular fractures: an animal study.

PURPOSE: The efficacy of bioresorbable fixation has recently been described in the treatment of cranial vault deformities and in midfacial trauma. However, little to no data exist regarding its use in load-bearing areas. The purpose of this study is to analyze and compare the treatment of mandibular fractures by using a bioresorbable fixation system with a conventional titanium system in a canine model. MATERIALS AND METHODS: Four adult beagles constituted the experimental group (A), and 2 beagles constituted the control group (B). Both groups underwent extraoral iatrogenic left mandibular angle osteotomies/fractures and open reduction and internal fixation by use of a bioresorbable fixation system (A) or a titanium fixation system (B). All operated animals were allowed to function immediately. Lateral skull radiographs were obtained preoperatively, immediately postoperatively after reduction, and at 3- and 6-month intervals. Preoperative and 6-month follow-up bite registrations were taken. At the 3-month interval, 1 animal from the experimental group was killed, and at 6 months the remaining animals were killed for morphologic, radiographic, and histologic analysis of the fractured interface and screw sites. RESULTS: Morphologically, in the bioresorbable group, there was no clinical evidence of 1) intraoral/ extraoral incisional dehiscence of wound infection; 2) deviation of the occlusion from maximum intercuspation; 3) intraoral/extraoral palpability of the device; 4) mobility of the fractured segments on manual manipulation; or 5) malunion as visualized at the time of sacrifice. All bioresorbable plates were clinically absent after 6 months and associated with adequate fixation and healing. Adequate restoration of function was achieved in both groups, with all of the animals showing weight gain. Radiographically, good alignment of the inferior border was seen, and histologically bony union was apparent in all specimens. CONCLUSIONS: This bioresorbable fixation system is effective in the treatment of mandibular angle fractures in a dog model, despite being placed in a load-bearing region.

Absorbable Implants↗

Diamond fraise technique for dermal grafts in temporomandibular disk reconstruction.

Dermal grafts have been described for a variety of applications, including preprosthetic surgery, reconstructive surgery, and temporomandibular joint surgery. Several reports have described the procedural techniques for acquiring a dermal graft. The surgical technique for harvesting a dermal graft with the use of the dermabrading diamond fraise bur is described. The use of the diamond fraise bur offers many unique surgical advantages: it allows minimal damage to the dermal layer; the healing surface is smooth, cosmetic, homogenous, and devoid of scratches or debris; an adequate graft of uniform thickness is obtained; the technique allows access to a variety of donor sites; and minimal patient postoperative donor site morbidity. The use of this technique provides a simple, cosmetic approach to obtaining an adequate dermal graft for temporomandibular joint reconstructive procedures, while minimizing the potential complications associated with other commonly used techniques.

Adipose Tissue↗

Infantile hemangioma of the accessory parotid gland.

Parotid gland tumors, especially those of the accessory parotid gland, are rare in infancy. Although infantile hemangiomas have been frequently reported as a cause of parotid gland tumors, their association with the accessory parotid gland has not been reported. This article describes the presentation of a hemangioma of the accessory parotid gland in an infant. Review of the literature and treatment methods are discussed.

Female↗

Early experience with biodegradable fixation for congenital pediatric craniofacial surgery.

We describe early experience using a polymeric bioresorbable bone fixation system in a consecutive series of eight pediatric patients for the correction of craniofacial malformations. Indications for surgical treatment included craniosynostosis (7) and encephalocele (1). All patients underwent bifrontal craniotomies with cranial vault or orbital reconstruction or both. Segments were then stabilized using bioresorbable fixation systems. Patients were evaluated pre- and postoperatively clinically and with radiographs and photographs. Mean follow-up was 4.5 months, with a minimum follow-up of 3 months. In seven of eight patients, there was no incidence of infection, extrusion, exposure, erythema, instability of the advanced segments, relapse, hematoma, seroma formation, or adverse inflammatory reaction. One patient experienced difficulty with respect to system imperfections (i.e., drill holes after tapping were too large for screws). This study demonstrated the efficacy of bioresorbable plates and screws for the growing pediatric craniofacial patient; excellent short-term results were achieved. Prospective studies and longer longitudinal follow-up of larger numbers of patients are desirable to confirm these findings.

Absorbable Implants↗