Background Medical research is a central part of any residency training. In view of the new Saudi orthopedic committee promotion regulation that mandates each resident to participate in a research project, the challenges that stand in the way of completion of substantial research within surgical residency must be investigated. The aim of this study was to assess the practice, attitudes, perception, and limitations associated with research among residents in the Saudi orthopedic program in the central region. Methods A cross-sectional study was conducted between June and July 2020 using an online-based survey. The total number of study participants was 128 orthopedic residents out of the 191 residents enrolled in the central region program. Data were analyzed, and descriptive statistics in the form of frequency and percentage were determined, analytical tests were performed with P < 0.05 being statistically significant. Results Most residents (95 %) participated in a research project during residency. Most projects (53.10 %) were case reports followed by retrospective studies (48.40 %). The majority (79.70 %) did not attend a research methods course during residency. Experience in research differed significantly (P < 0.05) by age, residency year, and center. The mean involvement score was significantly higher among males at 3 (± 1) than among females at 2 (± 0) (P < 0.001). Only 40.60 % have access to orthopedic journals, and the same percentage (40.60 %) knew how to Critique original articles. There was a statistically significant difference in the accessibility score according to the training center. Lack of faculty support and mentorship were the main barriers to medical research at 62.50 and 39.10 %, respectively. A total of 68.80 % reported that funding was not available through their institutes. Conclusions In Saudi Arabia, the level of meaningful clinical research and publications by orthopedic residents is still low. The results of this study should be taken into consideration before the implementation of the new promotion criteria in the centers under the umbrella of Saudi orthopedic committee.

Bin Majid et al. This is an open access article distributed under the terms of the Creative Commons Attribution License CC-BY 4.0., which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Objectives: Radiographic reference lines, angles, and measures comprise the foundation for accurate evaluation and surgical planning of orthopedic surgeries, especially when it comes to foot and ankle deformities. To date, no study has evaluated the average parameters for foot and ankle radiography in the Saudi population. This study aimed to establish reference values of foot and ankle angles for the general Saudi population. Methods: We included 100 participants (200 feet) in this study, with 50 males and 50 females aged 21–30 years. We recruited subjects who had no history of foot or ankle pain, surgery or fracture, no evidence of ligamentous laxity, and no history of systemic disease. Bilateral anterior-posterior (AP) and lateral weight-bearing radiographs were obtained using standardized angles. A total of 19 angles on AP and 9 angles on lateral radiographs were evaluated. Radiographic parameters were compared between genders. Results: A total of 400 radiographs from 200 normal feet were evaluated. The mean ± SD age of the subjects was 22.7±1.7 years. Statistically significant differences in mean radiographic parameters were found between males and females in both radiographic projections. Conclusion: Significant variation exists between the normal foot and ankle reference angles between the Saudi population included in our study and other ethnicities. Moreover, significant differences are found between genders in our study. Considering the lack of other studies involving the Saudi population, the results of this study can help serve as a reference when evaluating Saudi patients.

e23544 Background: Soft tissue sarcomas (STS) are a rare heterogeneous group of neoplasms that count for less than one percent of all solid cancers in adults. There is limited data from Saudi Arabia (SA). We aimed to describe the disease characteristics and clinical outcome of STS from a specialized referral center in STS management in SA. Methods: All adult patients treated at King Faisal Specialist Hospital and Research Center between January 2010 and December 2019 were reviewed. Continuous variables are described in median and interquartile range, and categorical variables are described in frequency and compared by the Chi-square test. Survival analysis was estimated by the Kaplan-Meier method and compared by the Log-Rank test. Results: Two hundred fourteen patients diagnosed with soft tissue sarcoma were eligible for the study. The median age at diagnosis was 38 years old (IQR: 26-50.5), and males were (56.1%). The most common histology subtypes were synovial sarcoma (19.6%), liposarcoma (13.5%), undifferentiated pleomorphic sarcoma (11.6%), leiomyosarcoma (9.8%). The most common presentation was painless swelling (49.1%), and the median duration of symptoms was 8 (IQR: 4–13) months. The majority (131 patients, 61.2%) were localized diseases, and the most common primary site was the lower limb (62.1%). The median tumor size was 10 (IQR: 6.8-15) cm, and the tumors were deep to fascia in 144 (67.3%) patients. Eighty-three patients (38.8%) presented with de novo metastasis, and lung (81.9%) was the most common site. The local therapy was as follows; surgery (45.3%), radiation (7.5%), both (41.6%), and none (5.6%). Eighty-five patients received chemotherapy as follows; anthracycline (51%), ifosfamide (28%), and both (23.5%). Seventy-nine patients (36.9%) achieved complete response, 56 (26.2%) developed distant metastasis, and 11 (5.1%) local relapse. Thirty-one patients received salvage chemotherapy, and 30 patients received second-line chemotherapy. The best response of first-line chemotherapy in metastatic patients was CR (3%), PR (14%), SD (8%), and PD (63%). The median follow-up was 37 (IQR: 12-76.75) months. The median OS for the localized disease was not reached, and three years OS was 88.2%. There was a statistical difference in OS between extremities vs. trunk (90.9% vs. 66.7%), (p = 0.01), histological subtypes (p = 0.006), nodal involvement (p < 0.001), T stage (p = 0.03), and complete response 96.9 vs. 68.5% (p < 0.001). The median OS for metastatic disease was 26 (95% CI: 16–35.5) months. The median OS for patients who underwent surgery, radiation, both or none were 26, 23, 31, and 9 months, respectively (p = 0.004). Conclusions: STS in SA is diagnosed at a younger age, with a longer median time for diagnosis and a more advanced stage. Histological subtypes and the advantage of local disease control and metastasectomy are consistent with other figures.