Objective: To evaluate the rate of local recurrence of extra-abdominal desmoid tumor and compare the outcomes of surgical treatment and conservative treatment.Methods: Twenty one patients (14 women and seven men), mean age 33.0±8.7 years old, with a diagnosis of desmoid tumor were evaluated. The mean follow-up period was 58.5±29.0 months. Fourteen cases involved the lower limbs, four cases involved the upper limbs, and three cases involved the trunk. The average tumor size was 12.7±7.5 cm. Of the 21 patients, 14 did not undergo previous treatment and seven patients relapsed before the initial evaluation. Surgical treatment was performed in 16 patients and conservative treatment was performed in five patients.Results: Recurrence occurred in seven patients (33%) and six of them relapsed within the first 18 months. No significant difference was observed between conservative and surgical treatment. However, a significant difference was observed among patients undergoing wide resection and who experienced improved local control.Conclusion: The recurrence rate of desmoid tumor was 33.3%. There was no difference in recurrence between conservative and surgical treatment. In surgical treatment, wide margins showed better results for recurrence control. Level of Evidence III. Retrospective Observational Study.

Objective: The purpose of this study is to present the surgical outcomes of twelve patients undergoing arthroscopic subtalar arthrodesis using two lateral portals (anterior and medial) in the sinus tarsi. Methods: A retrospective study was conducted with twelve patients (7 men and 5 women) with a mean age of 55.1 (36-74) years who underwent arthroscopic subtalar arthrodesis through the sinus tarsi between May 2015 and December 2016. The post-surgical follow-up was 12 months. Consolidation time and postoperative complications were evaluated, and a validated functional questionnaire from the American OrthopedicFoot and Ankle Society (AOFAS) and the visual analog scale (VAS) for pain were applied both before and after surgery. Results: The mean bone fusion time was 11.5 weeks. Bone consolidation was observed in all analyzed patients. Four patients developed late complications, three of which were related to screw positioning in the calcaneus, while one was related to residual hindfoot varus deformity. Screw-related complications are common with all subtalar arthrodesis techniques, and such complications are considered less relevant when evaluating the effectiveness of the presented technique. The mean preoperative AOFAS score was 42.3 (27-66) points, while the mean postoperative score was 83 (73-94) points. The mean preoperative VAS score for pain was 8.1 (5-10) points, and the mean postoperative score was 2.1 (0-5) points. The above data are similar to those reported in other published studies and reflect high bone consolidation rates. Conclusion: Arthroscopic subtalar arthrodesis through two lateral portals in the sinus tarsi is a safe and effective technique for the treatment of primary and secondary disorders of the subtalar joint. Correct positioning of screws and hindfoot alignment must be carefully ensured to avoid complications related to the synthesis material and hindfoot varus deformity. Level of Evidence IV; Therapeutic Studies; Case Series.

Objective: The purpose of this study is to present the surgical outcomes of 12 patients who underwent arthroscopic subtalar arthrodesis using 2 lateral portals (anterior and medial) in the sinus tarsi. Methods: A retrospective study was conducted with 12 patients (7 men and 5 women) with a mean age of 55.1(36-74) years who underwent arthroscopic subtalar arthrodesis through the sinus tarsi from May 2015 to December 2016. The postsurgical follow-up period was 12 months. Union time and postoperative complications were evaluated, and a validated functional questionnaire from the American Orthopedic Foot and Ankle Society (AOFAS) and the pain visual analog scale (VAS) were applied before and after surgery. Results: The mean time to bone fusion was 11.5 weeks. Bone union occurred in all subjects. Four patients developed late complications, 3 of which were related to screw positioning in the calcaneus and one of which was related to residual hindfoot varus deformity. Screw-related complications are common among subtalar arthrodesis techniques, and such complications are considered minor when the effectiveness of the technique is considered. The mean preoperative AOFAS score was 42.3 (27-66) points, whereas the mean postoperative score was 83 (73-94) points. The mean preoperative pain VAS score was 8.1 (5-10) points, and the mean postoperative pain VAS score was 2.1 (0-5) points. The above data are similar to those reported in the main published studies and reflect high bone union rates. Conclusion: Arthroscopic subtalar arthrodesis through 2 lateral portals in the sinus tarsi is a safe and effective technique for the treatment of primary and secondary disorders of the subtalar joint. Surgeons must carefully position the screws and align the hindfoot to avoid complications related to orthopedic hardware and hindfoot varus deformity.