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Snapping shoulder syndrome could be effectively treated with scapulothoracic arthroscopy. The excision of the scapular superomedial corner is assumed to help lower the recurrence rate. However, the amount of resection is still controversial. Furthermore, we lack a technique to measure if the resected amount was adequate based only on arthroscopy evaluation. We describe a 47-year-old man who suffered from severe snapping shoulder syndrome as a consequence of a deformity of the left superomedial scapular corner. The patient had endoscopic bursectomy and superomedial corner resection. Intraoperative three-dimensional CT scans (3D-CT) were used to evaluate the amount of resection. The patient recovered without incident and resumed his usual activities within 30 days following surgery. At the six-month follow-up, there were no recurrent symptoms. Intraoperative 3D imaging significantly enhances the safety and efficacy of scapulothoracic arthroscopy. This is a novel technique that, to our knowledge, has not been reported previously in the literature. • The scapular superomedial corner excision may help reduce recurrence rates of treatment for snapping shoulder syndrome. • The lack of anatomical landmarks makes estimating the resected volume by arthroscopic vision challenging. • This is the first report of the application of intra-operative 3D imaging for scapulothoracic arthroscopy. • Intraoperative 3D imaging significantly enhances the safety and effectiveness of scapulothoracic arthroscopy. • Intraoperative 3D imaging help in the precise identification of anatomical landmarks in small or complex regions. [ABSTRACT FROM AUTHOR]

Treatment of elbow bone defects is still a huge challenge in orthopaedic in order to restore the shape and function of the elbow joint. Bone defect reconstruction is very difficult due to biomechanical complexity of the elbow joint and the poor coverage tissue of this area, so mega-prothesis can be considered the most optimal solution in these cases. We present two clinical cases of megaprosthesis elbow replacement for treatment of bone defects caused by sequelae of trauma. There is one case of 3 cm bone defect at proximal ulna and one case of 3 cm bone defect at distal humerus. In the 1st case, the elbow joint is fusioned and the second case, the elbow joint is degenerated totally after 3 previous surgery. We performed total elbow replacement with a customized megaprosthesis for them. The Mayo elbow function assessment scale [1] pre-surgery was poor at 50 points. The average age is 35 years old. The mean post-operative follow-up time was 14 months. Range of elbow flexed motion was 135 degrees, both patients were maximally extension, the forearm pronation and supination were 90 and 75 degrees, respectively. The Mayo score is very good with 97,5 points. Both patients were completely satisfied with the postoperative results. Our results show that megaprosthesis elbow replacement is a very effective option for cases large elbow bone defects due to trauma sequelae. However, careful preoperative preparation is required for the best outcome. • Megaprosthesis replacement is more popular for bone tumor around elbow • Massive bone defect sequelae around elbow after trauma is really challenged to treat successfully. It will be more difficult if there is a problem with elbow joint: stiffness, degeneration, or fusion. In the past, functional arthrodesis of elbow was the main indication to resolve this problem. • With the development of 3D technology and biomaterial science, megaprosthesis is the best solution for limb preservation after bone tumor wide resection. • Application of megaprosthesis was not only limited for bone tumor, but we can also use it in some rare non-oncologic case, especially around elbow. • We introduced 2 cases with posttraumatic massive bone loss of distal humerus and proximal ulnar which are treated by. megaprosthesis successfully. [ABSTRACT FROM AUTHOR]