Nowadays, e-learning and virtual labs have gained substantial popularity in science education. Amid the COVID-19 shutdowns, regular in-person classroom teaching and lab courses are suspended in several countries worldwide. In this scenario, virtual classes and online resources could serve more effectively as a possible alternative way of learning science from home.

Transverse fractures of the olecranon are commonly fixed using tension-band wiring techniques. However the superficial nature of this area leads to high complication rates requiring removal of metalwork. The purpose of this retrospective study is to report and evaluate functional outcomes of polyethylene tension-band and bioabsorbable Magnesium alloy screw fixation of olecranon fractures.

A retrospective case-control study was undertaken. Demographics, injury type and post-operative details were collected. All patients were treated in the same institution by a single surgeon. Primary outcomes included radiographic healing and post-operative range of motion. Secondary outcome was post-operative complications.

A total of five cases were identified. Mean age was 52.4. The control group was made up of six patients treated with a traditional tension band wire fixation. One patient in study group was lost to follow up. 80% of fractures in study group demonstrated anatomic post-operative radiographic union, compared with 83% of control group. All patients had range of motion above 100°, with full protonation and supination. One patient did have an extension lag of 15°.

Surgical repair of olecranon fractures is often complicated by the need for re-operation. check details This method provides both intramedullary fixation and conversion of distraction forces to compression forces with bioabsorbable materials, and aims to reduce the high re-operation rates commonly seen by avoiding the use of permanent indwelling metal hardware.

Surgical repair of olecranon fractures is often complicated by the need for re-operation. This method provides both intramedullary fixation and conversion of distraction forces to compression forces with bioabsorbable materials, and aims to reduce the high re-operation rates commonly seen by avoiding the use of permanent indwelling metal hardware.

Arthroscopically-assisted reduction and percutaneous fixation of tibial plateau fractures is associated with fewer adverse events, better knee motion, and better Rasmussen functional scores compared to open reduction internal fixation in a number of non-randomized studies. The purpose of this study was to measure the influence of arthroscopy on the interobserver reliability in classification, treatment, and evaluation of intra-articular pathology and fracture reduction for fractures of the tibial plateau.

Surgeons were invited to participate in this online survey study. Surgeons were randomized at a 11 ratio to review eight cases of patients with tibial plateau fractures with either 1) knee radiographs alone or 2) radiographs and arthroscopic images. Multirater kappa was used to assess chance-corrected interobserver agreement.

There was no difference in interobserver agreement between groups for classification, treatment choice, determination of intra-articular pathology, or evaluation of fracture reduction.

Arthroscopy may not influence classification, treatment choice, diagnosis of intra-articular pathology, or quality of fracture reduction. Future studies will be necessary to determine if arthroscopic-assisted fixation of tibial plateau fractures is generalizable to surgeons of different training backgrounds.

Arthroscopy may not influence classification, treatment choice, diagnosis of intra-articular pathology, or quality of fracture reduction. Future studies will be necessary to determine if arthroscopic-assisted fixation of tibial plateau fractures is generalizable to surgeons of different training backgrounds.Loading at the distal forearm during dart throw motion (DTM) has been examined under static loads but there is no consensus on how loading is affected by active motion. In this work two implants were designed to measure forearm loading in a cadaveric model of wrist motion. Loads through the radius and ulna were significantly greater in reverse DTM than forward DTM. Radius loads were greatest in extended and radial deviated positions, and ulnar loads were greatest in flexed and ulnar deviated position. This work gives insight into the biomechanics of loading of the forearm to guide further studies.

Handheld retractor placement (HHRP) is prone to repetitive repositioning. This could lead to muscle damage especially during a procedure with a steep learning curve. In an attempt to minimize retractor repositioning during the learning curve of direct anterior approach (DAA) total hip arthroplasty (THA), we used a table mounted orthostatic retractor placement (ORP) device.

To investigate whether ORP would reduce the extent of muscle damage, OR-time and post-operative inflammatory response.

29 Patients were operated by 2 surgeons who randomly used HHRP or ORP during their learning curve of DAA THA. There were 14 patients in a control group who were operated by an experienced surgeon. Blood levels of Creatine Kinase (CK), C-Reactive Protein (CRP), Hemoglobin (Hb), Lactate Dehydrogenase (LDH) and Erythrocyte Sedimentation Rate (ESR) were measured at 1h pre- and 24 and 48h post-operatively.

The mean OR-time was 67 and 50min in the HHRP and ORP cohort, respectively (p<0,001). Post-operative CRP levels we blood loss and post-operative inflammatory response during the learning curve of DAA THA.

The brown-throated sloth (

) is widely distributed in three biomes The Amazon, Atlantic Forest, and Caatinga. Some subpopulations are isolated in urban areas in Brazil, usually in squares and small woods. Due to the scarcity of reference values, an investigation was carried out on the hematology and blood biochemistry of brown-throated sloths from urban areas.

Blood was collected by venipuncture in the femoral vein from 19 brown-throated sloths for hematological and biochemical analyses, living in two municipalities; Teófilo Otoni (TO) (Minas Gerais State) and Rio Tinto (RT) (Paraíba state), in the Atlantic Forest biome, Brazil. The samples were analyzed in specialized veterinary laboratories using automatic cell counters and slide fixation staining methods.

The two subpopulations of brown-throated sloths had no significant differences in most hematological values, with the exception of a higher leukocyte concentration (p<0.01) in the RT sub-population. The difference in leukocyte concentration suggests an idiosyncratic effect, as the animals were healthy and the stress of the capture was acute, not chronic.