Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Afsin Uysal is active.

Publication


Featured researches published by Afsin Uysal.


Plastic and Reconstructive Surgery | 2002

Anatomicohistologic study of the retaining ligaments of the face and use in face lift: retaining ligament correction and SMAS plication.

Ragip Ozdemir; Hidir Kilinc; Ramazan Erkin Ünlü; Afsin Uysal; Sensöz O; Cihat N. Baran

Plastic surgeons have sought to improve nasolabial folds, jowls, jaw lines, and cervical contour with face-lifting procedures that are abundant in the literature. The retaining ligaments of the face support facial soft tissue in normal anatomic position, resisting gravitational change. As this ligamentous system attenuates, facial fat descends into the plane between the superficial and deep facial fascia, and the stigmata of facial age develop. In this study, surgical correction of the retaining ligaments and plication of the superficial musculoaponeurotic system (SMAS) to reposition the structures that have descended with gravitation are discussed. The anatomy of the facial retaining ligaments was studied in 22 half-faces of 11 fresh cadavers, and the localization, extension, and width of the ligaments were examined macroscopically and histologically. Surgical correction of the retaining ligaments and plication of the SMAS have been accomplished in 27 face-lift patients with this anatomicohistologic study taken into consideration. There was hematoma in one patient at the cheek region and a permanent dimple caused by postoperative edema in two patients, with a localization of one zygomatic and two parotidomasseteric ligaments. In one patient, hypesthesia in the mandibular nerve region was seen, which remitted at 14 weeks. There were no other complications, and with a follow-up of 24 months, excellent aesthetic results and a high level of patient satisfaction were encountered.


Plastic and Reconstructive Surgery | 2002

Reconstruction of facial defects with superficial temporal artery island flaps: a donor site with various alternatives.

Ragip Ozdemir; Nezih Sungur; Sensöz O; Afsin Uysal; Ulusoy Mg; Turgut Ortak; Cihat N. Baran

&NA; Color and texture match is crucial in reconstruction of facial tissue defects. Between March of 1997 and July of 2000, island flaps based on the parietal, anterofrontal, centrofrontal, posterofrontal, and superior auricular branches of the superficial temporal artery were used in the reconstruction of tissue defects localized on different regions of the face in 28 patients. According to the size and the location of the defect, the flap was selected. There were 15 male patients and 13 female patients, with ages ranging between 19 and 74 years. In six of the flaps, venous congestion was observed. Because of the elevation of the eyebrow on the flap side, three patients required a sling to the opposite eyebrow. Excellent color and tissue match and transfer of hair‐bearing tissue to the eyebrow and beard areas were achieved with no other complications. Satisfactory aesthetic results were gained. (Plast. Reconstr. Surg. 109: 1528, 2002.)


Annals of Plastic Surgery | 2005

Improved flap viability with site-specific delivery of sildenafil citrate using fibrin glue.

Ulusoy Mg; Afsin Uysal; Uğur Koçer; Karaaslan O; Suat S. Cuzdan; Ayyildiz A; Ustün H

Sildenafil is a cyclic guanosine-specific phosphodiesterase type 5 (PD-5) inhibitor that is widely used for erectile dysfunction. Potent and competitive inhibition of PD-5 enhances levels of cyclic guanosine monophosphate (cGMP). Fibrin glue—apart from tissue fixation—has been used for slow release of drugs. In this study, local delivery of Sildenafil citrate with fibrin glue was accomplished to improve random flap survival. Fifty Wistar rats were randomized into 5 groups, and a standardized dorsal random-pattern skin flap was elevated in each rat. In Group I (n = 10), the base of the flap was divided, making it a “graft” control to study the graft effect. In Group II (n = 10), a thin Silastic sheet was used to separate the flap from the underlying vascular bed, and no pharmacologic treatment was given. In Group III (n = 10), only 0.5 mL of fibrin glue was applied to the flap donor site. In Group IV (n = 10), 2.5 mg of sildenafil citrate mixed in 0.5 mL of fibrin glue was applied to donor site of the flap, whereas 10 mg of sildenafil citrate mixed in 0.5 mL of fibrin glue was applied in Group V (n = 10). Area of flap survival was evaluated on postoperative seventh day. Total necrosis of all of the flaps was observed in “graft” control group (Group I). Sildenafil and fibrin glue groups (Group IV and V) resulted in a statistically significant decrease in flap necrosis compared with Groups II and III (P < 0.0001). A statistically significant difference could not be documented between Group II and Group III (P > 0.0001). The decrease in skin necrosis was statistically significant in Group V compared with Group IV (P < 0.0001). Histologic examination revealed significantly increased vascular density in Groups IV and V compared with Groups II and III (P < 0.0001), whereas a significant difference could not be documented between Groups IV and V (P > 0.0001) and between Groups II and III (P > 0.0001). In view of these results, topical sildenafil application seems toimprove flap survival in random-pattern skin flaps in dose-dependent manner.


Journal of Craniofacial Surgery | 2005

Osteogenic capacities of periost grafts, periost flaps and prefabricated periosteal flaps: experimental study.

Turgut Ortak; Ragip Ozdemir; Afsin Uysal; Mustafa Gürhan Ulusoy; Nezih Sungur; Belma Sahin; Uğur Koçer; Sensöz O

Reconstruction of the bone defects due to various causes is still one of the challenging problems in plastic and reconstructive surgery. Periosteum is accepted to be the essential source for the repair of the bone tissue, which constitutes the basis of the support and the mobility functions of the surrounding tissues. Periosteal grafts and flaps have been used for various purposes by numerous techniques. The osteogenic activity of the periosteal tissues has a great importance regarding the purposes of reconstruction. In this experimental study, 20 New Zealand rabbits were used for the evaluation and the comparison of the osteogenic activities of periosteal grafts, periosteal flaps and prefabricated periosteal flaps. Morphological, histopathological and scinthigraphical observations were carried out for the assessment and the comparison of the groups after a follow-up of 12 weeks. Two of the animals were left out as a result of infection. The results showed that periosteal flaps had a much faster and more stable reconstructive capacity of osteogenesis, whereas prefabricated periosteal flaps had an osteogenic capacity of a lower degree and periosteal grafts apparently less than the former groups. We believe that this study confirms the reconstructive capacity of prefabricated periosteal flaps as an alternative to periosteal flaps for the repair of osseous tissues as well as indicating the osteogenic capacity of the periosteal grafts, though in a lesser degree.


Plastic and Reconstructive Surgery | 2006

V-Y rotation advancement fasciocutaneous flap for excisional defects of pilonidal sinus.

Nezih Sungur; Uğur Koçer; Afsin Uysal; Cafer Arslan; Harun Çöloğlu; Gürhan Ulusoy

Background: Pilonidal sinus is a common disease that mostly affects young people. Despite numerous treatment modalities, the best technique has not yet been determined and there are many recurrences, causing economic losses and serious discomfort for the patients. Methods: The authors used V-Y rotation flaps for coverage of the defects after excision and debridement of chronic pilonidal sinuses in eight patients. The results were evaluated and compared with previously reported studies regarding the grade of disease at presentation, duration of surgery, blood loss, hospitalization period and active mobilization periods, complications, and loss of sensitivity. Results: No major complications occurred; hospitalization and immobilization periods were acceptably convenient. Recurrence was not seen, and sensitivity of the gluteal region did not diminish. The outcome was also satisfactory regarding aesthetics, and all the patients were satisfied with the result. Conclusion: The authors believe that the V-Y rotation advancement flap is a good alternative method for the treatment of pilonidal sinus.


Annals of Plastic Surgery | 2009

Bilateral Extraoral, Infraorbital Nerve Block for Postoperative Pain Relief After Cleft Lip Repair in Pediatric Patients: A Randomized, Double-Blind Controlled Study

Suna Akin Takmaz; Hale Yarkan Uysal; Afsin Uysal; Uğur Koçer; Bayazit Dikmen; Bülent Baltaci

The objective of this study was to evaluate the effectiveness of bilateral extraoral infraorbital nerve block with 0.25% bupivacaine administered at the end of surgery in postoperative pain relief after cleft lip repair. Forty ASA I-II children were randomly divided into 2 groups. Group I received 1.5 mL 0.25% bupivacaine and group II received 1.5 mL saline. FLACC scores of the patients in the recovery room in group I were 4 times less than in group II (P = 0.001) and in the first 4 hours postoperatively were apparently less in group I (P = 0.001). Mean time to first paracetamol requirement was longer in group I (P = 0.001). Total paracetamol consumption was lower in group I (P = 0.001). None of the patients required rescue tramadol in group I, whereas all patients in group II needed. In group I, parent satisfaction scores were higher (P = 0.001). Vomiting incidence was higher in group II (P = 0.028). Bilateral extraoral, infraorbital nerve block administered at the end of surgery provides satisfactory analgesia with high parental satisfaction and lower complication rates and reduces rescue analgesic consumption in patients undergoing repair of cleft lip.


Annals of Plastic Surgery | 2006

An alternative technique for microsurgically unreplantable fingertip amputations

Afsin Uysal; Yüksel Kankaya; Ulusoy Mg; Nezih Sungur; Karalezli N; Kayran O; Uğur Koçer

Reattachment of the amputated fingertips as composite grafts has been performed for distal levels in children, with high rates of good outcome, but the majority of the reports emphasized that this procedure had success rates only up to 50% in adults. Several techniques to enhance composite graft take in adults have been defined. In this study, a technique to enhance nonmicrosurgical replantation of amputated fingertips as composite grafts is presented. Twenty-three patients were treated with this technique, 20 of which were adults. An area of skin on the amputation margin of the stump was deepithelized, and the amputated part was defatted to reattach the piece as a cap composite graft and to increase the contact area. The patients were evaluated after the operations regarding functional and esthetic outcome. Success rates of 86.95% in total and 85% in adults were achieved, with acceptable sensibility (with a mean value of 7.26 mm for the 2-point discrimination), minimal shortening (a mean value of 6.80 mm), and satisfactory esthetic outcome using this technique.


Scandinavian Journal of Plastic and Reconstructive Surgery and Hand Surgery | 2005

Effect of sildenafil citrate on viability of flaps: An experimental study in rats

Ali Ayyildiz; Afsin Uysal; Uğur Koçer; Önder Karaaslan; Emre Huri; Cankon Germiyanoğlu; Muzaffer Çaydere

Various pharmacological agents have been used to try and elucidate the pathophysiology of ischaemia and necrosis of flaps. Their most important disadvantage is the need for relatively high doses given systemically, which increases the risk of potential side effects. Topical or local agents are more useful. Sildenafil citrate, the specific inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE 5) was studied as an antianginal drug during the late 1980s, but is now used for its effect on erectile function in men. Sildenafil citrate causes dilatation of peripheral arteries and veins and the inhibition of the thrombus-forming ability of platelets in vivo. Our study was designed to test the efficacy of sildenafil citrate on the viability of flaps.


Plastic and Reconstructive Surgery | 2006

Pull-in suture technique for the treatment of mallet finger.

M. Gürhan Ulusoy; Nazim Karalezli; Uğur Koçer; Afsin Uysal; Önder Karaaslan; Yüksel Kankaya; Cafer Aslan

Background: Mallet finger deformity is a common disability that causes discomfort and inconvenience to the patient. Although numerous operative techniques have been described, surgical management remains controversial. Methods: Between 2002 and 2004, 19 patients with an unsuccessful splinting regimen history, chronic deformities of tendinous origin (>3 months after the injury), or fractures involving 30 percent or more of the articular surface underwent surgical treatment. In 11 patients, chronic mallet finger deformity with tendinous origin was present, whereas eight patients presented with mallet fractures involving more than 30 percent of the articular surface. Open reduction with internal “pull-in” sutures and distal interphalangeal joint immobilization with Kirschner wire was accomplished. Active motions of the proximal interphalangeal and metacarpophalangeal joints were not restricted. After removal of the Kirschner wire at week 6, active flexion exercises were commenced immediately, and daily activities were not restricted. Full activity was allowed at day 7. Goniometric measurements, radiographs, and patient satisfaction were evaluated during the follow-up period. Results: The mean follow-up period of the patients was 16 months (range, 4 to 28 months). Mean extensor lag of the distal interphalangeal joint was 2 degrees (range, 0 to 6 degrees). The mean flexion of the distal interphalangeal joint was 74 degrees (range, 60 to 90 degrees). According to Crawford’s evaluation criteria, 14 excellent and five good results were obtained. Apart from radiologically documented mild degenerative changes or joint narrowing in six patients, no complication was encountered. Conclusion: The pull-in technique allows accurate realignment of the tendon–bone unit without any specific instrumentation or intraoperative fluoroscopic imaging methods.


Journal of Craniofacial Surgery | 2002

Intraosseous hemangioma of the mandible: a case report and review of the literature.

Ragip Ozdemir; Alagoz S; Afsin Uysal; Ramazan Erkin Ünlü; Turgut Ortak; Sensöz O

Intraosseous hemangiomas are benign lesions, occurring often in vertebra and skull. These lesions can present in the head and neck region being the next most common site with a predominance of mandible. There are approximately seventy intraosseous hemangiomas of mandibula in literature reported to date. We present an intraosseous hemangioma of the sympysis mandible. We performed a block resection of the mass preserving the mandibular integrity with no complications. There were no recurrences in the follow-up period of 24 months.

Collaboration


Dive into the Afsin Uysal's collaboration.

Top Co-Authors

Avatar

Uğur Koçer

Süleyman Demirel University

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Turgut Ortak

Süleyman Demirel University

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Hakan Orbay

University of California

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge