Introduction: The surgical procedure by the anterior, posterior and combined antero-posterior approaches had applied for the treatment of cervical spondylotic myelopathy.  Methods: During the treatment process, all patients were pre-operatively as well post-operatively graded according to Japanese Orthopaedics Association. Several surgical methods such as anterior approach, posterior approach, and combined antero-posterior approach have been addressed for CSM patients, with the choice based on the pathogenesis of the myelopathy. The main indications for surgery were evidence of myelopathy on physical examinations, a JOA score below 13 points help with spinal cord compression observed on plain X-ray, CT scan, MRI studies.  Results: The pre-operative JOA scores were 7.60±1.23 in laminoplasty, 8.30±1.03 in diskectomy and corpectomy and 7.10±1.20 in combined antero-posterior approach patients. At the follow-up after three months the JOA scores were laminoplasty 13.30±1.30, diskectomy and corpectomy 13.55±1.15 and combined antero-posterior 13.50±1.08. The JOA recovery rate averaged, 61.08±11.25% in laminoplasty, 60.67±10.60% in diskectomy and corpectomy and 64.67±10.72% in combined anteroposterior approach. The high- signal intensity changed to normal in 18 out of 28 and no any kyphotic change and instability were found in cervical spine at the follow up.  Conclusions: Patients with OPLL (continuous, segmental and mixed type), stenosis of cervical spinal canal, multilevel cervical spondylosis, large and high ossification of IVDP with stenosis were improved with laminoplasty. Patients with PIVD, CSM with kyphosis, post laminectomy , OPLL herniated type, unstable vertebral alignment, stenosis by osteophytes, were improved with anterior approach . Ossified or deformed OPLL, unstable vertebral with stenosis ,OPLL or OYL with cervical meandearing (swan-neck) were improved with Combined anterior and posterior approach. Keywords: cervical spondylotic mylopathy, anterior cervical diskectomy and fusion, corpectomy.

Introduction: Though laparoscopic cholecystectomy is a gold standard treatment for symptomatic cholelithiasis, safe dissection of Calot's triangle is important to avoid major complications like injury to bile duct, vessels and nearby organs. Aims: This study was designed to determine the frequency, description of Rouviere’s sulcus and its role in safe laparoscopic cholecystectomy. Methods:This prospective cross-sectional study was conducted at the Department of Surgery, Karuna Hospital, Nepal from January 2022 to September 2022. Patients who underwent laparoscopic cholecystectomy, presence of Rouviere’s sulcus were identified and classified, kept in Group A and absent in Group B. If the common bile duct outline visualized, its relation with Rouviere’s sulcus was noted and used as reference point for gall bladder dissection. The perioperative complications, conversion to open procedure, operative time and hospital stay were recorded. Results: Among 100 patients, the Rouviere’s sulcus was present in 79% and absent in 21%. Type I is the most common (65.82%). It was found above the level of common bile duct line in 84.81%. Cystic artery injury was present in 1.26% (Group A) and 14.28% (Group B). Bile/stone spillage 1.26% (Group A) and 9.52% (Group B), port hematoma 2.52% (Group A) and 9.52% (Group B), operative time 43.17±8.57 minutes (Group A) and 61.29±12.07 minutes (Group B), conversion to open procedure was none in Group A and 9.52% (Group B) and hospital stay 1.23±0.59 days in group A and 3.16±1.16 days in Group B. Conclusion: Rouviere’s sulcus is an important extrabiliary anatomical landmark, seen in majority of patients for safe laparoscopic cholecystectomy.