In this paper, a CFD analysis on the bare hull form of submarines or torpedoes for minimizing the resistance is represented. There are several parameters in submarine form design which the most important parameter is resistance. All operational characteristics of submarines are related to the resistance, related required power and then, underwater speed and range. Other parameters are only ment...

The results of thirty synovectomies of the elbow for rheumatoid arthritis are reported. Satisfactory relief of pain was obtained in twenty-seven elbows and the range of movement was improved in twenty-one. The classical operation includes excision of the radial head but in this series approximately half the radial heads were conserved with comparable results. The results of synovectomy do not s...

We compared the outcome of peri-operative humeral condylar fractures in patients undergoing a Coonrad-Morrey semiconstrained total elbow replacement with that of patients with rheumatoid arthritis undergoing the same procedure without fractures. In a consecutive series of 40 elbows in 33 patients, 13 elbows had a fracture in either condyle peri-operatively, and 27 elbows were intact. The fractu...

A 24-year-oldathlete presented following a fall onto an outstretched hand during a football match, total functional impotence of both upper limbs with swollen elbows, pain, without skin opening or motor deficit (A). Radiography of both elbows was objectified a fracture of the both olecranon (B).The patient was treated by tension-band wiring fixation with precocious postoperative rehabilitation ...

OBJECTIVE To detect elbow lesions produced by hyperextension in 30 elite handball goalkeepers. METHODS Conventional radiographs, stress radiographs, and ultrasound examination of both elbows were used. As a control group, 30 male volunteers from the general population within the same age group with no history of elbow injury were used. RESULTS Radiographic findings in the goalkeepers were o...

This study reports our experience with total elbow replacement for fused elbows. Between 1982 and 2004, 13 patients with spontaneously ankylosed elbows were treated with a linked semi-constrained non-custom total elbow implant. The mean age at operation was 54 years (24 to 80). The stiffness was a result of trauma in ten elbows, juvenile rheumatoid arthritis in one, and rheumatoid arthritis in ...

Helix 38 (H38) of the large ribosomal subunit, with a length of 110 A, reaches the small subunit through intersubunit bridge B1a. Previous cryo-EM studies revealed that the tip of H38 moves by more than 10 A from the non-ratcheted to the ratcheted state of the ribosome while mutational studies implicated a key role of flexible H38 in attenuation of translocation and in dynamical signaling betwe...

Limb design is well conserved among quadrupeds, notably, the knees point forward (i.e. cranial inclination of femora) and the elbows point back (i.e. caudal inclination of humeri). This study was undertaken to examine the effects of joint orientation on individual leg forces and centre of mass dynamics. Steady-speed trotting was simulated in two quadrupedal models. Model I had the knee and elbo...

This study investigates efficacy of arthroscopic debridement with or without intra-articular hyaluronic acid (HA) injections for pain relief, ROM, and functional improvement in 30 elbows osteoarthritis - primary degenerative post-traumatic. were treated posttraumatic (n=12) (n=18) elbow by debridement. HA injection protocol was either preoperative (6 cases), postoperative (n=4), combined pre/po...