Intracordal auricular cartilage injection for unilateral vocal fold paralysis.

We evaluated the efficacy and outcome of intracordal auricular cartilage injection in patients with unilateral vocal fold paralysis. Our interest developed from findings of a canine model study that reported that histologic characteristics of cartilage were preserved 2 and 3 years after intracordal autologous cartilage injection. Between May 2002 and July 2010, 29 patients with breathy dysphonia caused by unilateral vocal fold paralysis underwent intracordal auricular cartilage injection.

Extent of palatal lengthening after cleft palate repair as a contributing factor to the speech outcome.

Operative techniques in performing cleft palate repair have gradually evolved to achieve better speech ability with its main focus on palatal lengthening and accurate approximation of the velar musculature. The authors doubted whether the extent of palatal lengthening would be directly proportional to the speech outcome. Patients with incomplete cleft palates who went into surgery before 18 months of age were intended for this study.

Objective preoperative estimation of the ability of primary closure on anterolateral thigh free flap donor site: circumference and area ratios of deep tissue to thigh.

Purpose: The purpose of this study was to consider the relationship between the ratio of deep tissue including muscle to thigh at donor sites and the possibility of performing primary closure of donor site.

Methods: The subjects were 74 patients who had harvesting of anterolateral thigh (ALT) free flap from June 2005 to June 2011. Primary closure was possible for 65 but not possible for 9.

Role of protein kinase Cµ isoform expression in dimethylhydrazine-induced vascular endothelial proliferation.

1,2-Dimethylthdrazine (DMH) has been known to induce vascular neoplasms, such as malignant endothelioma, in animal experiments through the induction of abnormal proliferation of human umbilical vein endothelial cells (HUVECs). We studied the effect of protein kinase C (PKC) isoforms on DMH-induced abnormal proliferation of vascular endothelium to identify the isoforms with higher relevance. The study was conducted with pure culture HUVECs in a control group and a 1x10-9 M DMH-treated group.

Endoscopic transnasal approach for the treatment of isolated medial orbital blow-out fractures: a prospective study of preoperative and postoperative orbital volume change.

Endoscopic transnasal reduction is a safe and effective technique for the treatment of blow-out fractures of the medial orbital wall. However, because this approach does not use rigid permanent material for reconstruction of the fractured medial orbital wall, some degree of herniation of the orbital contents may occur after the intraethmoidal packing material is removed. The purpose of this study was to evaluate the change in orbital volume in patients with medial orbital wall fractures treated through an endoscopic transnasal approach.

Recurrent basal cell carcinoma following ablative laser procedures.

Background: In Korea, many patients diagnosed with basal cell carcinoma (BCC) have a history of laser ablations of undiagnosed lesions.

Objective: To evaluate the clinical/pathological and surgical features of BCC developing from undiagnosed lesions following laser ablations (not full-face cosmetic ablations) and to compare them with primary BCCs.

Methods: This study enrolled 359 patients with 373 biopsy-proven BCC lesions.

Comparison of the postoperative outcome in pure medial orbital fracture among three groups: using porous polyethylene or hydroxyapatite through subciliary approach and transnasal endoscopic correction.

Many methods of surgical repair of pure medial orbital fractures have been reported. In this study, we discuss the outcome from the surgical corrections of hydroxyapatite (Biocoral) or porous polyethylene (Medpor) through subciliary approach, and the transnasal endoscopic corrections. Between March 1993 and July 2003, 63 patients were treated with porous polyethylene and 48 patients were treated with hydroxyapatite.

A comparison of commissure excursion following gracilis muscle transplantation for facial paralysis using a cross-face nerve graft versus the motor nerve to the masseter nerve.

Background: The microneurovascular transfer of a free muscle transplant is the procedure of choice for facial animation in a child with facial paralysis. One of the critical factors of this procedure is the selection of a motor nerve to innervate the transplanted muscle.

Methods: From 1989 to 1999, 166 free segmental gracilis muscle transfers were performed in 121 children for facial animation.

Analysis of the postoperative outcome in 405 cases of orbital fracture using 2 synthetic orbital implants.

The purpose of this study was to analyze the postoperative complications according to the location (floor/medial wall/floor and medial wall) of the orbital fracture of 405 patients during the past 10 years and to investigate the possible alterative data in postoperative outcome in change with the application of 2 synthetic orbital implants: porous polyethylene (Medpor) and hydroxyapatite (Biocoral). The medical records of 405 patients were reviewed especially for enophthalmos, diplopia, sensory disturbance in the area of distribution of the infraorbital nerve, and postoperative complications originated from the implanted material itself, from March 1993 to July 2003. Of the 405 patients, 214 patients were operated with porous polyethylene and 191 patients with hydroxyapatite.

A report of 12 cases of basal cell carcinoma arising in lesions following laser therapy.

Since the latter half of the 1990s, laser treatment has become a common practice in Korea. A group of patients diagnosed as having basal cell carcinoma (BCC) also had a history of prior laser therapy performed on undiagnosed cutaneous lesions. Clinical and histologic evaluations of these cases were performed retrospectively.

A simple and quantitative method for three-dimensional measurement of normal smiles.

Smile reconstruction is one of the most challenging fields in plastic surgery. An understanding of the normal smile is essential in planning surgery for facial paralysis. The purpose of this study was to suggest a simple and quantitative method for the 3-dimensional analysis of smiles and to establish a basis for smile reconstruction in facial paralysis patients.

Treatment of atrophies secondary to trilinear scleroderma en coup de sabre by autologous tissue cocktail injection.

Background: The atrophies are left after regression of linear scleroderma "en coup de sabre." They are often irreversible and disfiguring. Several surgical techniques have been attempted to correct atrophies secondary to linear scleroderma en coup de sabre.