Ahmet Biçer

Improving bony stability in maxillofacial surgery: use of osteogenetic materials in patients with profound (≥5 mm) maxillary advancement, a clinical study

PURPOSE LeFort I osteotomy is a part of the standard surgical regimen in the treatment of patients with Class III dentofacial deformity. Inadequate osteosynthesis between the segments is a problem in patients with profound (> or =5mm) maxillary advancement. In this study an ideal ossification is aimed for by applying a combination of osteoinductive and osteoconductive materials. PATIENTS AND METHODS Ten patients with Class III deformity were included in this study. At least 5mm of advancement was performed on each patient, while mean maxillary advancement was 5.7 mm. Human demineralised bone matrix (DBM, 1 cc) and 20 mg bovine bone collagen-protein extracts (Colloss) were applied in between the segments following rigid fixation. Recurrence rates were calculated via cephalometric analyses. Multislice tomography images were collected after the 3 and 12 months in an effort to document ectopic or abnormal bone growth patterns, if any present. Four patients underwent a second operation for plate removal 12 months postoperatively. Bone biopsies were collected from the anterior maxillary wall. RESULTS The cephalometric analyses performed after 3 and 12 months were identical to the analyses calculated 1 week postoperatively for each patient, ruling out recurrences. No abnormal or ectopic bone growth was observed. Peroperative examination of four patients revealed a complete or near to complete osteosynthesis line at the anterior maxillary wall. The microscopic examinations of the bony samples retrieved from these borders revealed abundant osteoblasts, osteocytes, osteoclasts and a bony regeneration mimicking intramembranous ossification with its trabecular organisation. CONCLUSIONS It is possible to achieve an acceptable line of osteosynthesis in cases in need of profound maxillary advancement by applying DBM and Colloss inbetween the bony segments.

Brachialis muscle transfer to the forearm for the treatment of deformities in spastic cerebral palsy

The use of the brachialis muscle for tendon transfers in cerebral palsy has not been described previously. In this study, the brachialis muscle was used for transfer in 11 patients with spastic cerebral palsy for the restoration of forearm supination, wrist extension, or finger extension. Four patients underwent brachialis rerouting supinatorplasty. Active supination increased in two (60° and 50°), minimally increased in one (5°), and did not change in one patient. Five patients had a brachialis to extensor carpi radialis brevis transfer. The mean gain in postoperative active wrist extension was 65°. Two patients with finger flexion deformity and no active metacarpophalangeal joint movement underwent a brachialis to extensor digitorum communis transfer, and they attained an improved posture of finger extension although their postoperative metacarpophalangeal flexion–extension movement arc was 5° and 25°. None of the patients developed any loss of active flexion at the elbow. Our preliminary experience suggests that the brachialis muscle may serve as an alternative tendon transfer in cerebral palsy.

Does primary brachial plexus surgery alter palliative tendon transfer surgery outcomes in children with obstetric paralysis

BackgroundThe surgical management of obstetrical brachial plexus palsy can generally be divided into two groups; early reconstructions in which the plexus or affected nerves are addressed and late or palliative reconstructions in which the residual deformities are addressed. Tendon transfers are the mainstay of palliative surgery. Occasionally, surgeons are required to utilise already denervated and subsequently reinnervated muscles as motors. This study aimed to compare the outcomes of tendon transfers for residual shoulder dysfunction in patients who had undergone early nerve surgery to the outcomes in patients who had not.MethodsA total of 91 patients with obstetric paralysis-related shoulder abduction and external rotation deficits who underwent a modified Hoffer transfer of the latissimus dorsi/teres major to the greater tubercle of the humerus tendon between 2002 and 2009 were retrospectively analysed. The patients who had undergone neural surgery during infancy were compared to those who had not in terms of their preoperative and postoperative shoulder abduction and external rotation active ranges of motion.ResultsIn the early surgery groups, only the postoperative external rotation angles showed statistically significant differences (25 degrees and 75 degrees for total and upper type palsies, respectively). Within the palliative surgery-only groups, there were no significant differences between the preoperative and postoperative abduction and external rotation angles. The significant differences between the early surgery groups and the palliative surgery groups with total palsy during the preoperative period diminished postoperatively (p < 0.05 and p > 0.05, respectively) for abduction but not for external rotation. Within the upper type palsy groups, there were no significant differences between the preoperative and postoperative abduction and external rotation angles.ConclusionsIn this study, it was found that in patients with total paralysis, satisfactory shoulder abduction values can be achieved with tendon transfers regardless of a previous history of neural surgery even if the preoperative values differ.

Creating a neoconchal complex using the adjustable conchal sliding technique in prominent ear correction.

Abstract An oversized aural concha plays a significant role in prominent ear deformities and should be taken into consideration during preoperative examination. In the current study, we present a procedure known as the conchal sliding technique as an alternative to more disruptive methods. Twenty-four patients (9 females and 15 males; 47 ears in total) underwent a conchal sliding procedure between 2006 and 2010. During the surgery, a wide subperichondrial dissection is performed after a posterior elliptical incision. After the concha is exposed as a hemisphere, it is split along its long axis to reveal the medial and lateral cartilage segments. These segments are gently scrolled upon each other. Transposition of the lateral segment posteriorly to the medial segment replaces the whole ear toward the posterior direction. Three mattress sutures (4–0 polypropylene) reliably secure the repositioned and setback conchal bowl. If needed, an antihelix can be formed using neoconchal-scaphal mattress sutures. Median follow-up period was 24.3 months (range, 6–48 mo). A unilateral hematoma developed in 1 patient and an anterior step deformity occurred in another. No recurrence, infection, necrosis of the skin, distortion of the auditory canal, or formation of keloid was observed in any of the patients. The median cephaloauricular angle was measured as 46 degrees before the surgery and 26 degrees after the surgery, whereas the distance between the helix and the mastoid was 23 mm before the surgery and 11 mm after the surgery. All the patients were satisfied with the results. This technique provides stable and natural results by creating a safe neoconchal complex. It may be a safe and reliable solution to an oversized aural concha, enabling natural-looking and positive cosmetic results.

Izogenic cartilage transfer in rhinoplasty procedure.

Cartilage is commonly grafted during primary and secondary rhinoplasties as a means of addressing both functional and esthetic issues. Generally, such grafts are taken from the nasal septum, but auricular conchae or ribs may serve as donor sites if needed. However, the latter often entail considerable morbidity and graft mismatch. To circumvent these drawbacks, use of implants or processed cartilage (allogenic or xenogenic in origin) has been proposed. Herein, the isogenic transfer of nasal septal cartilage between identical twins is reported.

Effects of Zafirlukast on the Capsular Fibrosis of Silicone Breast Implants

Objective: Capsular contracture is the most common complication reported after breast augmentation. Recent studies have established the role of leukotriene receptors in capsular contracture formation. Zafirlukast is a leukotriene receptor antagonist, and its effects on experimental models of periprosthetic capsular fibrosis have been shown to decrease capsule thickness and reduce factors that are directly and indirectly involved in capsular contracture. The goal of this study was to improve the periprosthetic capsular formation model in rats and demonstrate the effects of oral Zafirlukast administration on capsular fibrosis. Methods: Forty-eight adult female Sprague-Dawley rats were divided into four groups. Smooth-surfaced, gel-filled prostheses were implanted in 36 rats. Group A: The day of the operation, 12 animals received Zafirlukast treatment for 14 weeks (oral gavage, once a day, 6 days a week, 4 mg/kg/day); Group B: 10 weeks after the operation, 12 animals received Zafirlukast treatment for 4 weeks; Group C: 12 animals were implanted but did not receive treatment; Group D: 12 animals did not have an operation, but for 14 weeks received oral gavage containing water instead of Zafirlukast. At the end of the 14 weeks, the implants with the surrounding capsules were extracted. Blind macroscopic inspectional evaluation of the capsules was performed, and microscopic capsular thickness measurements were made. Results: The mean capsular thickness was 0.033 mm (SD: 0.011) in Group A, and 0.089 mm (SD: 0.023) and 0.125 mm (SD: 0.025) in Groups B and C, respectively. Differences between Groups A and C and between Groups A and B were significant (p0.05). Similarly, Macroscopic Inspectional Fibrosis Scoring showed a significant difference between Groups A and C and a non-significant difference between Groups B and C. Conclusion: Daily prophylactic oral administration of Zafirlukast immediately after implantation significantly diminishes the development of fibrotic capsules around the silicone prostheses.

A new technique for aesthetic removal of benign skin lesions, the “North Star” procedure

Many types of local flaps are commonly used for the repair of circular skin defects. In this paper, we described that the “North Star” design is useful for aesthetic removal of benign skin lesions.

Neonatal Forearm Compartment Syndrome

Neonatal kompartman sendromu cogu zaman ust ekstremitede ulserasyon, nekroz ve doku kaybiyla seyreden nadir bir durumdur. Nekrotizan fasiit, neonatal gangren, konjenital varisella ve buna benzer klinik tablolarla karismasi nedeniyle detayli bir arastirma gerektirmekte ve iyi sonuc acisindan da erken tani ve tedavi onemli olmaktadir. Bunu vurgulamak amaciyla erken tani koyup, cerrahi olarak tedavi ettigimiz bir neonatal kompartman sendromu olgusunu sunduk.