Anterior glenohumeral instability is a frequent cause of professional soccer players’ removal, reduced performance, and prolonged recovery. Players are subjected to intense physical contact and high performance, thus demanding lower rates of recurrence after surgical correction so they can return to sport quickly. Objective: To assess professional soccer players treated by the Lartajet technique considering the rate and time of return to sports activities, complications or failures. Methods: Analysis held between 2010 and 2018 of professional soccer players diagnosed with anterior shoulder instability operated by the open procedure of Lartajet in our service. Results: The mean return to professional sports was 93.5 days. The mean time of surgery in relation to the first dislocation was 12.4 months. Each athlete had 4.3 shoulder dislocations until the procedure was performed. The rate of recurrence was zero and subluxation was not observed. Conclusion: The Latarjet procedure allowed all professional athletes to return to competitive activities quickly, without dislocations and subluxation, negative seizure and without complications during follow-up. Level of evidence IV, Case series.

Objective: The aim of this study is to assess the economic impact of the new coronavirus (COVID-19) on Brazilian Orthopaedic Surgeons. Methods: The questionnaire was applied to orthopedists and it questions how long they have worked in this area; their monthly financial impact during the pandemic; what sector was impacted the most; if they had or didn’t have any financial reserves and how long they would last; if they had any other source of fixed income; and how much time off they had taken from work. It was entirely anonymous and it could only be answered once. Results: About 98% (955 out of 975) of the analyzed orthopedists suffered some monetary impact, 80% had a financial reserves, from which 45% could last for 3 months. Conclusion: There was a direct relationship between the professional experience in this subspecialty and a higher percentage of fixed income, as well as a greater impact on the reduction percentage in the monthly budget and a longer time off the job. Level of Evidence IV, Analyses with no sensitivity analyses.

ObjectiveTo analyze, from the immunohistochemical perspective, the effects of hyaluronic acid of different molecular weights in an experimental model of osteoarthritis in rabbits.MethodsForty-four male California rabbits were randomly assigned to three different groups (PR, S, and P) and submitted to the resection of the anterior cruciate ligament of the right knee. Three weeks after the surgical procedure, three intra-articular weekly injections were carried out with low-molecular-weight native hyaluronic acid (Hyalgan®) to PR group, high molecular weight branched chain hyaluronic acid (Synvisc®) to group S, and saline solution 0.9% to group P. All animals were sacrificed 12 weeks after the surgical procedure, and the tibial plateaus of the infiltrated knees were then dissected. Histological sections of cartilage from the tibial plateau support areas were stained with immunohistochemical markers in order to investigate the amount of metalloproteases (MMPs 3 and 13) and their inhibitors (TIMPs 1 and 3). The staining intensity was quantified on a Zeiss Imager.Z2 Metasystems microscope and analyzed by Metafer4 Msearch software.ResultsThe chondroprotective effect of the hyaluronic acids used in the study was demonstrated when compared to the control group. However, the comparison between them presented no significant statistical difference regarding chondroprotection.ConclusionThe injection of saline solution demonstrated signs of OA development, while adding native hyaluronic acid of low molecular weight (Hyalgan®) and hyaluronic acid of high molecular weight (Synvisc®) protected the articular cartilage in this model of OA.

ObjectiveTo report a series of cases of patients treated by fracture of the femoral head through the Ganz pathway with controlled dislocation of the hip.MethodAll patients who were surgically treated with a Ganz access route for femoral head fractures were identified in a tertiary referral service for trauma. A review of medical records with X-rays and CT scans was carried out. The radiographic evaluation was classified according to Pipkin and the functional evaluation was performed through the application of the modified Harris Hip Score. Data regarding the quality of reduction, type of fixation, and postoperative complications were collected.ResultsThe sample consisted of three men and one woman, with a mean age of 30 years (20–51). Regarding Pipkin's classification, two cases were type I, one type II, and one type IV. Regarding the Harris Hip Score, an average of 65.75 points was obtained (range: 20–86). All cases had anatomical reduction in the intraoperative period. One case presented post-traumatic sciatic nerve praxis and evolved with infection at the surgical site.ConclusionSurgical treatment of femoral head fractures through controlled hip dislocation is a viable option and can be considered an alternative to classical approaches.

Objective: The use of images in 3D reconstruction is an instrument that facilitates the interpretation of the fracture, observations of deviations, rotations and articular surface. Objective: To evaluate the inter-observer and intra-observer reliability of the Neer x AO proximal humerus fracture classification on radiographs versus computed tomography with three-dimensional reconstruction (3D). Methods: We evaluated the digital radiographs (anteroposterior and profile) and computerized tomography with 3D reconstruction of patients presenting with a proximal humerus fracture, surgically treated at an Orthopedics and Traumatology Service. All radiographs and computed tomography were classified (Neer and AO) by eight (8) orthopedic surgeons, specialists in the upper limb and sent, following the pre-established numeration by the author, in a spreadsheet to the author of the study. Results: The Neer and AO scores were more reproducible when determined by computed tomography with 3D reconstruction, mainly in fractures of greater complexity (Neer 4 parts and AO group C). However, in absolute values, inter and intra-observer reproducibility and concordance still remain low. Conclusion: Computed tomography with 3D reconstruction allows a better analysis of fractures of group C and Neer 4 parts. However, the inter and intra-observer agreement does not increase significantly in comparison to the radiographs. Level of evidence III, Study of non-consecutive patients, without gold standard, applied uniformly.