Ozan Bitik
Cleveland Clinic
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Featured researches published by Ozan Bitik.
Plastic and Reconstructive Surgery | 2012
Mohammed Alghoul; Ozan Bitik; Jennifer McBride; James E. Zins
Background: The transition zone between cheek superficial musculoaponeurotic system (SMAS) and malar SMAS is difficult to raise because of proximity of zygomatic nerve branches. The authors attempted to clarify the three-dimensional anatomy of the retaining ligaments in relation to nerve branches in this area. Methods: Facial dissection was performed on 22 cadaver hemifaces. The zygomatic and masseteric retaining ligaments and the zygomatic and buccal facial branches in the area of dissection were identified. Ninety-five percent confidence regions for the locations of the zygomaticus major origin and the main zygomatic retaining ligament and upper masseteric retaining ligament were created. Results: The distribution, density, and size of the retaining ligaments varied. The main zygomatic and upper masseteric retaining ligaments were located at a mean distance of 44.91 ± 9.72 mm and 46.35 ± 8.34 mm from the tragus. An upper zygomatic branch passed between the main zygomatic and the upper masseteric retaining ligaments and was always located deep (4.07 ± 1.29 mm) in the sub-SMAS plane of dissection and passed deep under the upper third of the zygomaticus major muscle. An inferior zygomatic branch passed inferior to the upper masseteric retaining ligament or penetrated its inferior margin (54 percent of cases) and was located more superficially (1.41 ± 0.95 mm), becoming visible just distal to the ligament. Conclusions: Despite anatomical variation, the main zygomatic and upper masseteric retaining ligaments create a safe passage in between, through which a zygomatic facial branch passes deep. The area of danger is immediately inferomedial to the upper masseteric retaining ligament, where a zygomatic branch becomes superficial and vulnerable.
Pakistan Journal of Medical Sciences | 2014
Mehmet Dadaci; Bilsev Ince; Zeynep Altuntas; Haldun Onuralp Kamburoğlu; Ozan Bitik
Ingrown toenails are painful conditions that especially affect young people and may become chronic if not treated. We describe a case of chronically inflamed ingrown toenail left untreated for three years. In the physical examination, skin bridging and epithelialization was observed in midline secondary to soft tissue hypertrophy of the lateral nail matrixes. Epithelized fibrous tissue was cut across the lateral nail matrix and left for secondary healing. Partial matrixectomy was applied and the remnants were cauterized in compliance with the Winograd procedure after removal of the nail. Our case is an advanced condition which is the second report in the literature. Skin bridging secondary to excess soft tissue hypertrophy can be observed in untreated bilateral Heinfert or Frost stage 3 ingrown nails. This rare case can be classified as advanced stage 3 disease or stage 4.
Aesthetic Plastic Surgery | 2014
Ozan Bitik; Hakan Uzun; Haldun Onuralp Kamburoğlu; Mehmet Dadaci
AbstractBackgroundAnterior septal height is an important determinant of nasal tip projection. Accordingly, the anterior septal extension technique has proven itself to be a powerful tool for achieving long-lasting nasal tip projection in rhinoplasty. However, anterior septal extension does not protect against postoperative loss of nasal tip rotation unless an additional suspension strategy is used. A tip-suspending transfixion suture is the authors’ strategy for supporting nasal tip rotation whenever an anterior septal extension technique is performed. MethodsOf 156 rhinoplasties performed by the authors between 2010 and 2012, a cohort of 22 droopy-tip rhinoplasties was extracted in which the described technique was used. The patients in this cohort were included in a retrospective nasal tip projection and rotation analysis. The nasolabial angle (NLA) and Goode ratio measurements were compared between preoperative, 3-week postoperative, and 1-year postoperative profile-view photographs.ResultsThe NLA and the Goode ratio measurements were significantly higher in the 3-week postoperative group than in the preoperative group, indicating an effective gain in both tip projection and rotation. The NLA and the Goode ratio measurements did not differ statistically between the postoperative 3-week and postoperative 1-year groups, indicating long-term maintenance of nasal tip position.ConclusionA tip-suspending transfixion suture is an easy method for securing nasal tip rotation when used in conjunction with an anterior septal extension.Level of Evidence VThis journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.
Journal of Craniofacial Surgery | 2013
Ozan Bitik; Hakan Uzun
Defects in the central upper lip are difficult to close because of the unique anatomy and limited reconstructive options. Therefore, for every individual patient, reconstructive goals must be prioritized. Reconstructive priorities for an old patient with a large full-thickness oncologic defect are clearly different than those of a teenager with a residual deficiency after cleft repair. Authors aim to share their experience of 2 cases in which large central upper lip oncologic defects have been reconstructed in a single stage using subcutaneous pedicled nasolabial island flap, which provides a single-stage reconstruction by recruiting tissue from the cheek. It obsoletes the need for a lip adhesion. Lip adhesion-related feeding problems are eliminated, oral aperture circumference is maintained, and oral function is preserved. For the elderly male, a full beard is an advantage because it hides both the cheek and the lip scars.
Plastic and Reconstructive Surgery | 2011
Haldun Onuralp Kamburoğlu; Hakan Uzun; Ozan Bitik; Umut Sinan Ersoy; Engin Öcal; Mert Çalş; Erhan Sönmez; Tunç Şafak; Asl Pnar; Pergin Atilla
Background: Hyperhomocysteinemia is an independent risk factor for atherothrombotic disease and venous thrombosis. The effects of hyperhomocysteinemia on the microcirculation were studied in vascular diseases. The authors aimed to investigate the effects of hyperhomocysteinemia on the microcirculation of random-pattern skin flaps. Methods: Twenty-two male Sprague-Dawley rats, divided into two groups, were used in this study. The rats in group 1 (control) were fed the TD.07112 diet, and the rats in group 2 (experimental group) were fed the TD.07114 diet, enriched in methionine for 30 days, to induce severe hyperhomocysteinemia. The plasma homocysteine, folic acid, vitamin B12, and vitamin B6 levels were evaluated on days 0 and 30. Distally based skin flaps were elevated on day 30 and evaluated by direct observation, microangiography, and light microscopy on day 37. Results: Mean homocysteine blood levels were 211.76 ± 56.55 &mgr;M/liter in group 2 and 14.48 ± 2.00 &mgr;M/liter in group 1 on day 30. The rate of necrosis was significantly higher in group 2 (59.00 ± 4.38 percent) compared with group 1 (32.54 ± 6.13 percent; p < 0.01). Microangiographic findings were similar to direct observation results. Microvessel calibration was reduced in group 2. In group 1, structures of epidermis and dermis were normal; however, there was a slight mononuclear cell infiltration along with thick collagen fibers. A more prominent mononuclear cell infiltration with fields of loose epidermis, associated with inflammation and infiltration, were observed in group 2. Conclusion: The authors demonstrated, for the first time, that hyperhomocysteinemia severely suppressed the microvasculature of skin flaps, as shown by increased flap necrosis and reduced microvessel calibration in the experimental group.
Journal of Craniofacial Surgery | 2015
Hakan Uzun; Ozan Bitik; Haldun Onuralp Kamburoğlu; Mehmet Dadaci; Mert Calis; Engin Öcal
Background:Basal and squamous cell carcinomas are the most common malignant cutaneous lesions affecting the nose. With the rising incidence of skin cancers, plastic surgeons increasingly face nasal reconstruction challenges. Although multiple options exist, optimal results are obtained when “like is used to repair like”. We aimed to introduce a simple algorithm for the reconstruction of nasal defects with local flaps, realizing that there is always more than one option for reconstruction. Patients and Methods:We retrospectively reviewed 163 patients who underwent nasal reconstruction after excision of non-melanoma skin cancer between March 2011 and April 2014. We analyzed the location of the defects and correlated them with the techniques used to reconstruct them. Results:There were 66 males and 97 females (age, 21–98 years). Basal cell carcinoma was diagnosed in 121 patients and squamous cell carcinoma in 42. After tumor excision, all the defects were immediately closed by either primary closure or local flap options such as Limberg, Miter, glabellar, bilobed, nasolabial, V-Y advancement, and forehead flaps. Conclusions:Obtaining tumor-free borders and a pleasing aesthetic result are major concerns in nasal reconstruction. Defect reconstruction and cosmesis are as important as rapid recovery and quick return to normal daily activities, and these should be considered before performing any procedure, particularly in elderly patients.
Aesthetic Surgery Journal | 2018
Ozan Bitik; Haldun Onuralp Kamburoğlu; Hakan Uzun
Background The effect of a spreader flap on the keystone area and the upper bony vault depends on the structural strength and cephalic extent of upper lateral cartilages, both of which can be significantly variable among individuals. Objectives The authors present a novel cephalically extended osseocartilaginous composite spreader flap technique that was designed to overcome the limitations of a conventional spreader flap on the keystone area upper bony vault, in patients with cephalically short and structurally weak upper lateral cartilages and thin nasal bones. Methods This study was a retrospective review of the recorded perioperative information to investigate the frequency of the use of the composite spreader flap technique and perioperative parameters that relate to postoperative dorsal deformities. One-hundred-seventy-six consecutive primary open approach rhinoplasty cases performed by the first author (O.B.) between November 2015 and February 2017 were included in the study. Patient data were obtained from rhinoplasty data sheets, standardized photographs, and postoperative physical examinations. Results Of the 176 cases who underwent primary open approach rhinoplasty whose data were reviewed for the purpose of this study, 38 (32 females, 6 males) had dorsal reconstruction with the use of a composite spreader flap. Seventeen patients had a deviated nose with an asymmetric bony pyramid. In 8 patients, the composite spreader flap was used unilaterally. No patients in the composite spreader flap group had a postoperative dorsal deformity or required surgical revision. Conclusions Composite flap preparation extends the reliability and the reach of the spreader flap technique beyond its previous borders. Level of Evidence 4
Turkish Journal of Medical Sciences | 2017
Hakan Uzun; Ozan Bitik; Yahya Baltu; Mehmet Dadaci; Aycan Uğur Kayikçioğlu
BACKGROUND/AIM Resection of tumors from the groin and thigh regions with safe margins often results in significant soft tissue defects, which preclude primary closure. This study presents a series of rectus abdominis myocutaneous flaps for irradiated thigh and groin wounds with the purpose of evaluating the efficacy and outcomes of these flaps in this population. MATERIALS AND METHODS From 2008 to 2015, all patients who underwent resection of thigh or groin region tumors and reconstruction with an inferiorly based rectus abdominis myocutaneous flap were retrospectively identified. Medical records of the patients were reviewed. RESULTS A total of 27 patients, aged 20-67 years, were operated on for defects in the groin and upper thigh region. Nine patients underwent immediate reconstruction. The remaining 18 patients underwent late reconstruction. There was neither total flap loss nor partial flap loss. We chose to utilize 15 ipsilateral and 12 contralateral pedicles. The mean length of stay in hospital was 13.7 days. CONCLUSION A rectus abdominis myocutaneous flap can be successfully used in patients with groin and upper thigh defects due to its predictable and robust vascular supply, bulky muscle content, wide arc of rotation, and large skin island.
Turkish Journal of Medical Sciences | 2017
Ali Emre Aksu; Galip Gencay Üstün; Ozan Bitik; Murat Kara; Ahmet Hamdi Sakarya; Tunç Şafak
BACKGROUND/AIM Due to increased average life expectancy, the number of elderly patients requiring complex reconstructive microsurgical procedures is rising. Age, comorbid conditions, and location of operation are all possible risk factors. The aim of this study is to evaluate surgical outcomes to set the right criteria. MATERIALS AND METHODS Between 1996 and 2014, the data of 30 patients over the age of 70, who were treated with microsurgical techniques in our clinic, were extracted from patient records and analyzed retrospectively. RESULTS In this patient population, flap success rate was 94%. Systemic and surgical complication rates were 40% and 48%, respectively. Complication rates were higher in head and neck cases but there was no statistically significant difference compared to reconstructions in other areas. Loss of oral lining, as a serious complication, had no effect on complications in head and neck reconstruction patients in our series. Conclusions: Flap success is comparable to younger age groups but procedures are associated with a high rate of complications Evaluating and controlling comorbid conditions is important. The American Society of Anesthesiologists scoring system is reliable in this patient population. Although complications are more common, these procedures can be performed safely in elderly populations with careful patient selection.
Journal of Craniofacial Surgery | 2017
Ali Emre Aksu; Hakan Uzun; Ozan Bitik; Gökhan Tunçbilek; Tunç Şafak
Reconstruction of a midfacial defect can represent a difficult challenge for the plastic surgeon. Although many midfacial deformities have traumatic or congenital origins, the vast majority of head and neck defects occur after resection of malignant head and neck neoplasms. Autogenous reconstruction is now routinely performed for larger, complex defects resulting from surgical resection or trauma. In this study, the authors present 27 patients with midfacial defects reconstructed with free flaps. Twenty-two of the defects were created by surgical ablation of cancer (maxillectomy) and the others were traumatic. The maxillectomy defects were classified into 4 according to the classification proposed by Cordeiro. Eighteen of the patients were male and 9 were female. Twenty-nine free flaps were performed. Six different types of flaps including radial forearm flap, vertical rectus abdominis (VRAM) flap, anterolateral thigh (ALT) flap, tensor fasciae latae (TFL) flap, fibula osteocutaneous flap, and iliac osteocutaneous flap were accomplished. Types I and II defects were reconstructed with radial forearm flap. Type III defects were reconstructed with VRAM and ALT. Type IV defects were reconstructed with VRAM and TFL. Two patients underwent a second flap reconstruction due to recurrent disease (9.1%). Average patient age was 53.1 years. Free-flap survival was 100%. Free tissue transfer is the method of choice in midfacial reconstruction. Following a reconstructive algorithm is useful in the decision-making process for patient evaluation and treatment. Every reconstructive microsurgeon might have different experiences with different flaps. Therefore, the algorithm for flap choices is not universal among surgeons.Abstract Reconstruction of a midfacial defect can represent a difficult challenge for the plastic surgeon. Although many midfacial deformities have traumatic or congenital origins, the vast majority of head and neck defects occur after resection of malignant head and neck neoplasms. Autogenous reconstruction is now routinely performed for larger, complex defects resulting from surgical resection or trauma. In this study, the authors present 27 patients with midfacial defects reconstructed with free flaps. Twenty-two of the defects were created by surgical ablation of cancer (maxillectomy) and the others were traumatic. The maxillectomy defects were classified into 4 according to the classification proposed by Cordeiro. Eighteen of the patients were male and 9 were female. Twenty-nine free flaps were performed. Six different types of flaps including radial forearm flap, vertical rectus abdominis (VRAM) flap, anterolateral thigh (ALT) flap, tensor fasciae latae (TFL) flap, fibula osteocutaneous flap, and iliac osteocutaneous flap were accomplished. Types I and II defects were reconstructed with radial forearm flap. Type III defects were reconstructed with VRAM and ALT. Type IV defects were reconstructed with VRAM and TFL. Two patients underwent a second flap reconstruction due to recurrent disease (9.1%). Average patient age was 53.1 years. Free-flap survival was 100%. Free tissue transfer is the method of choice in midfacial reconstruction. Following a reconstructive algorithm is useful in the decision-making process for patient evaluation and treatment. Every reconstructive microsurgeon might have different experiences with different flaps. Therefore, the algorithm for flap choices is not universal among surgeons.