Augmentation Rhinoplasty with Expanded Polytetrafluoroethylene: A Ten-Year Experience for Safety / 대한이비인후과학회지

BACKGROUND AND OBJECTIVES@#Expanded polytetrafluoroethylene (ePTFE) is an alloplastic implant widely used in augmentation rhinoplasty. However, ePTFE implant is known to be vulnerable to postoperative infection and inflammation. We aimed to verify the safety of the material by analyzing the results of augmentation rhinoplasty using ePTFE carried out in a single institution for 10 years.SUBJECTS AND METHOD: From April 2009 to June 2018, 238 patients who underwent augmentation rhinoplasty with ePTFE were included in the study. There were 187 male patients and 51 female patients. Patients' medical records, preoperative and postoperative photographs were analyzed, and postoperative implant migration, inflammation, and infection were investigated.@*RESULTS@#Of the 238 patients, 10 underwent revision surgery, and 87 (36.6%) underwent concomitant osteotomy for the correction of the deviated nose. Of the 5 patients (2.1%) who showed postoperative implant migration, 4 patients belonged to the osteotomy patients group while 1 patient belonged to the no-osteotomy group. There was more frequent implant migration in patients who underwent osteotomy; however, there was no statistically significant difference (p=0.06). In all of the five patients, the degree of implant migration was minimal, therefore no patient required revision surgery. No inflammatory reaction or infection was found after surgery.@*CONCLUSION@#ePTFE is a safe material for augmentation rhinoplasty and is not susceptible to infection after surgery if used through appropriate surgical procedures

Sqamous Cell Carcinoma Arising from Hidradenitis Suppurativa

Hidradenitis suppurativa is a chronic inflammatory disease that originate in the apocrine glands of the skin, It results in fibrosis, sinus track formation, and scarring. Rarely it is complicated by squamous cell carcinoma arisihg from hidradenitis suppurativa were reported in the literature. We present a patient who suffered over 20 years from persistent, extensive hidradenitis suppurativa and who developed squamous cell carcinoma at the perianal area. During the 18 month follow-up period, no evidence of recurrence nor metastasis was found.

A biomechanical Comparison of Different Fixation Techniques on Intercondylar Eminence Fractures of Tibia

Methods of internal fixation for displaced intercondylar eminence fractures of tibia are percutaneous pinning, pull-out knot with wire or nylon and screw fixation. We tried experimental tensile test on four different fixation methods with 60 fresh pig knees. The results were as follows. 1. In our experimental study, the maximum tensile strength(M.T.S.) was recorded average 73.49N in the group of percutaneous pinning, 133.01N in Ethilon used group, 198.01N in wire used group and 275.05N in screw fixed group. 2. The group of percutaneous pinning with K-wires showed the lowest value of M.T.S., therefore, this method of fixation must be discarded. 3. The M.T.S of pull-out knot tie was about twice as high as that of percutaneous pinning. But the method of knotting should be improved because of the failure around the knot. 4. The group of screw fixation showed the highest value of M.T.S., but this method of fixation has some problems, like as arthrotomy or difficulty of removal of hardware.