Comparison of Septocolumellar Suture (SCS) and Lateral Crural Overlay (LCO) methods on nasal tip projection and rotation in rhinoplasty

"n Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:Arial; mso-bidi-theme-font:minor-bidi;} Background: Proper nasal tip control is a difficult step in rhinoplasty. The aim of this study was to compare the effects of two cartilage modifying methods, Septocolumellar Suture (SCS) and Lateral Crural Overlay (LCO), on nasal tip projection and rotation."n"n Methods: In a single-blinded clinical trial, 36 patients who were scheduled for nasal tip deprojection were enrolled. A profile photograph of face was taken from all the patients before and three months post operation. Nasofacial angles, TP:Ln ratio for assessing nasal tip projection, tip columellar angle and nasolabial angles for nasal tip rotation assessment were measured by a computer software. The patients were randomly divided into two groups that underwent open rhinoplasty. "n"n Results: Both the LCO and SCS methods were accompanied by a significant reduction in nasofacial angle and TP:Ln ratio, there was raised nasolabial and rotation angle in comparison to preoperative values. The use of LCO method in comparison to SCS resulted in more increase in the nasolabial angle (11.83±3.05 Vs. 4.56±1.62 degree) and Rotation Angle (11.44±3.22 Vs. 1.56±1.04 degree) and resulted in more reduction in post-operative TP:Ln ratio in comparison to preoperative measures (-0.05±0.01 Vs. -0.03±0.01), however, the difference in the nasofacial angle was not significant."n"n Conclusion: Both cartilage modifying techniques resulted in significant reduction in the projection and increasing in the tip rotation. Lateral Crural Overlay (LCO) seems to be more effective than Septocolumellar Suture (SCS). Therefore, the SCS method is recommended for patients who need more nasal tip rotation and deprojection in rhinoplasty

Effect of Amniotic Membrane Homogenate on Ischemic Skin Flap Survival in Rat Model

Bachground: Surgical skin flaps are frequently used in plastic and reconstructive surgery to repair acquired or congenital defects. Necrosis is a common complication associated with these flaps postoperatively as a result of inadequate blood supply. This study was designed to evaluate the effectiveness of amniotic membrane homogenate in healing the dorsal skin of the rat as an ischemic flap model. Materials and Methods: In this experimental study, twenty male Wistar rats weighing between 350 and 400 g were used in the study. For all rats 3*10 cm, full-thickness, caudally based pattern dorsal skin flaps were elevated. The rats were randomized into 2 groups: control (I) and experimental (II). Then in 10 point,0.1 mL amniotic membrane homogenate was injected with with equal interval in experimental group and normal salin administered in control group. Seven days later all skin flaps were examined mechanically (necrosis) and histologically. Results: Tissue flap necrosis showed significantly reduced in amniotic membrane homogenate group (p=0.032), and tissue flap survival showed significantly increased in amniotic membrane homogenate group (p=0.036). There were no significant differences in the histology analysis heling proccess between two groups (p>0.05). Conclusion: It seems that, the administration of amniotic membrane homogenate is an effective and safe method that improves the survival of ischemic skin flaps in a rat model

Effect of Amniotic Membrane Homogenate Homogenate on Ischemic Skin Flap Survival in Rat Model

Bachground: Surgical skin flaps are frequently used in plastic and reconstructive surgery to repair acquired or congenital defects. Necrosis is a common complication associated with these flaps postoperatively as a result of inadequate blood supply. This study was designed to evaluate the effectiveness of amniotic membrane homogenate in healing the dorsal skin of the rat as an ischemic flap model. Materials and Methods: In this experimental study, twenty male Wistar rats weighing between 350 and 400 g were used in the study. For all rats 3 * 10 cm, full-thickness, caudally based pattern dorsal skin flaps were elevated. The rats were randomized into 2 groups: control (I) and experimental (II). Then in 10 point,0.1 mL amniotic membrane homogenate was injected with with equal interval in experimental group and normal salin administered in control group. Seven days later all skin flaps were examined mechanically (necrosis) and histologically. Results: Tissue flap necrosis showed significantly reduced in amniotic membrane homogenate group (p=0.032), and tissue flap survival showed significantly increased in amniotic membrane homogenate group (p=0.036). There were no significant differences in the histology analysis heling proccess between two groups (p>0.05). Conclusion: It seems that, the administration of amniotic membrane homogenate is an effective and safe method that improves the survival of ischemic skin flaps in a rat model