The neck is a geometric region that can be studied and operated using anatomical triangles. There are many triangles of the neck, which can be useful landmarks for the surgeon. A better understanding of these triangles make surgery more efficient and avoid intraoperative complications. Herein, we provide a comprehensive review of the triangles of the neck and their clinical and surgical applications.
Intraoperative Complications ; Neck

In order to evaluate the effects of the postoperative astigmatism control, we compared 20 eyes measuring astigmatism at the end of operation with the Zeiss surgical keratometer and then had received loosening or tightening of sutures(keratometer group), with 20 eyes that were operated without the keratometer(control group). The mean cylindrical power of the keratometer group was lower than the control group at early postoperative period(P<0.001), but there was no statistical difference between both group at one or two months after operation. However the amount of cylinder was smaller in the keratometer group than in the control group. 19 of 20 eyes(95%) had less than 2D of astigmatism in the keratometer group, but in the control group 15 of 20 eyes(75%) had less than 2D of astigmatism at postoperative 60 days. 4 cases of posterior capsule rupture as intraoperative complication occured in the keratometer group. The posterior capsule rupture was caused by the decrease of surgical field clarity due to farther working distance by 17.5cm through attaching the Zeiss surgical keratometer to the operating microscope. From this study, Zeiss surgical keratometer seems to useful to reduce the early postoperative astigmatism but the intraoperative difficulty because of occupying space and decreasing clarity of surgical field is observed. The posterior capsule rupture as intraoperative complication occurs more frequently due to the disadvantages of this instrument.
Astigmatism* ; Cataract* ; Intraoperative Complications ; Rupture

Trichiasis is usually associated with congenital entropion or conjunctival destruction from disease or injuries. Cicatricial entropion follows scarring of the palpebral conjunctiva, which may be caused by chemical injuries, surgical procedures, trauma and infections. Numerous surgical procedures have been described for correction of trichiasis and cicatricial entropion in accordance with the severity and location of the condition. We have treated partial trichiasis in 2 cases(4 lids),(one involving nasal one forth of the upper lid with corrected congenital ptosis and the other in temporal one forth of the upper lid with narrow palpebral fissure) and cicatricial entropion on the middle one forth of the upper lid in 3 cases(3 lids) with transposition of skin flaps. The resuits were satisfactory.
Cicatrix ; Conjunctiva ; Entropion* ; Intraoperative Complications ; Skin* ; Trichiasis*

BACKGROUND: Percutaneous vertebroplasty (PV) is a minimally invasive, image-guided therapy used to relieve pain from osteoporotic vertebral compression fractures. Venography before injection of bone cement has been advocated as a means of identifying sites of potential venous leakage during the procedure. However, venography has been used only in selected situations, and its need is debatable. We aimed to analyze the usefulness of venography with percutaneous vertebroplasties for osteoporotic compression fractures and to report our recent experiences in treating such patients. METHODS: One hundred PVs performed on 93 patients were evaluated. To identify the usefulness of venography, our cases were divided into 2 groups. Group A patients had venographies before the PVs, whereas Group B patients were treated without venography. We analyzed their clinical status, pain status, and complications linked to leakage of bone cement. RESULTS: There were no significant differences in any of the collected data for the two groups. CONCLUSION: Our results indicate that PVs can be performed safely without venography beforehand. However, venography may be beneficial for less experienced physicians or trainees.
Fractures, Compression ; Humans ; Intraoperative Complications ; Phlebography ; Vertebroplasty

BACKGROUND: Percutaneous vertebroplasty (PV) is a minimally invasive, image-guided therapy used to relieve pain from osteoporotic vertebral compression fractures. Venography before injection of bone cement has been advocated as a means of identifying sites of potential venous leakage during the procedure. However, venography has been used only in selected situations, and its need is debatable. We aimed to analyze the usefulness of venography with percutaneous vertebroplasties for osteoporotic compression fractures and to report our recent experiences in treating such patients. METHODS: One hundred PVs performed on 93 patients were evaluated. To identify the usefulness of venography, our cases were divided into 2 groups. Group A patients had venographies before the PVs, whereas Group B patients were treated without venography. We analyzed their clinical status, pain status, and complications linked to leakage of bone cement. RESULTS: There were no significant differences in any of the collected data for the two groups. CONCLUSION: Our results indicate that PVs can be performed safely without venography beforehand. However, venography may be beneficial for less experienced physicians or trainees.
Fractures, Compression ; Humans ; Intraoperative Complications ; Phlebography ; Vertebroplasty

BACKGROUND AND OBJECTIVES: Dacryocystorhinostomy is commonly performed through an external incision. Several transnasal approach were described earlier in this century but they failed to gain popularity probably because of difficult exposure. Whether the endoscopic laser dacryocystorhinostomy improved intranasal visualization and decreased intraoperative complications than external incision. MATERIALS AND METHODS: During recent 3 years, we performed endoscopic laser dacryocytorhinostomy about 10 cases at Joong Ang Gil Hospital. RESULTS: Success rate of revision groups (3 cases) was very good. CONCLUSION: Small-diameter endoscope with angled field of view provides excellent intranasal visualization. Endoscopic laser dacryocystorhinostomy avoids the possibility of pathologic scar formation and injury to the medial canthus. Endoscopic laser dacryocystorhinostomy appears to be the safe treatment especially for revision procedure.
Cicatrix ; Dacryocystorhinostomy* ; Endoscopes ; Endoscopy ; Intraoperative Complications

PURPOSE: To compare intraoperative and postoperative flap complication rate between the Hansatome Excellus and Zyoptix XP microkeratomes for LASIK surgery. METHODS: The intra- and post-operative flap complication rate, in 323 eyes of 167 patients operated on using the Hansatome microkeratome were compared with 260 eyes of 132 patients that were operated on using the Zyoptix XP microkeratome. RESULTS: The Hansatome group showed an intraoperative complication incidence of 2.7% compared to 0.4% for the Zyoptix XP group (p<0.05), but the incidence of postoperative complication was 2.7% in the Zyoptix XP group compared to 0.6% in the Hansatome group (p>0.05). There was no incidence of visually significant complications in either group. CONCLUSIONS: The Zyoptix XP showed a significantly decreased intraoperative flap complication rate compared to the Hansatome Excellus microkeratome. The preoperative K value is an important factor for safe LASIK.
Eye ; Humans ; Incidence ; Intraoperative Complications ; Keratomileusis, Laser In Situ ; Postoperative Complications

PURPOSE: We wanted to compare the clinical and radiological results of surgical treatment of acetabular both column fracture according to the fixation method. MATERIALS AND METHODS: Between 1986 and 2008, 55 patients who underwent surgical treatment for acetabular both column fracture were clinically and radiologically evaluated after a minimum follow-up of one year. Of 55 patients, 29 cases were operated with a cerclage wire or cable (group I) and 26 cases were operated with a plate and screw (group II). The surgical approach, the intra- and post-operative complications and the reduction quality were compared between the two groups. The clinical and radiological results were analyzed according to the criteria reported by Matta. RESULTS: There were 14 (48.3%)/20 (76.9%) cases of anatomical reduction, 12 (41.4%)/6 (23.1%) cases of imperfect reduction, 1/0 case of poor reduction and 2/0 cases of surgical secondary incongruence, respectively. Thirty three patients of 34 anatomically reduced patients showed excellent clinical results and the anterior and posterior combined approach was frequent in group I. There were no differences between the two groups for the complications, although intraoperative complication was more frequent in group II and postoperative complication was more frequent in group I. CONCLUSION: The clinical and radiological results of surgical treatment in patients with both column fracture were satisfactory in both groups. However, the concerns related to the surgical approach and complications will require a randomized prospective study.
Acetabulum ; Follow-Up Studies ; Humans ; Intraoperative Complications ; Postoperative Complications

Thoracic epidural analgesia is the most effective method of managing post-thoracotomy pain. However, the catheter may be misplaced into the intrapleural, intercostal, subarachnoid, or intravascular space. Intravascular misplacement of a catheter can be detected by aspiration of blood or administration of a test dose of local anesthetic; however, these methods may result in a false-negative response. Moreover, a catheter placed in the epidural space may migrate into a blood vessel during the intraoperative period. Thus, the location of the catheter tip should always be determined before local anesthetic is administered. We report a case of intraoperative intravascular migration of a thoracic epidural catheter in a 32-year-old male who underwent left thoracotomy.
Analgesia, Epidural ; Blood Vessels ; Catheters ; Epidural Space ; Glycosaminoglycans ; Humans ; Intraoperative Complications ; Intraoperative Period ; Male ; Punctures ; Thoracotomy

Posterior transarticular screw fixation is effective treatment method in cases of atlanto-axial instabilities. Various surgical procedures have been described for stabilization of unstable C1-C2 complex. The conventional management methods, either a Gallie or Brooks fusion technique, have limitations such as post-operative rigid bracing and relatively high rate of non-union. Since Magerl developed a technique for posterior transarticular screw placement at C1-C2 in 1979, Noel I. Perrin published modified technique for atlanto-axial instability using percutaneous drill guide system in 1995. This instrumentation system improved limitations of conventional fixation technique and reduced complications as well as shortening of operation times. Between May 1997 and February 1998, modification of this surgical approach with Perrin screw system was used in the treatment of 12 cases of atlantoaxial instability. Transarticular screw was placed in conjunction with bone graft wiring through the percutaneous working drill guide. The causes of the instabilities were rheumatoid arthritis(5 cases), traumatic injuries(4 cases), post operative instability(1 case), and non-union with immobilization(2 cases) and other cause. Patient age was ranged from 18 years to 70 years. Mean operation time was 145 min(110 to 225) with mean blood loss was 180 ml. Intraoperative complication was drill tip fracture in 1 case and screw pullout in 1 case postoperatively. Neurological or vascular injury were not observed there was neither radiologic instabilities nor spinal deformities. Neurologic and symptomatic status were improved in all operated cases.
Braces ; Congenital Abnormalities ; Humans ; Intraoperative Complications ; Transplants ; Vascular System Injuries