Biomedical subjects
Publications and source records attributed to N Halperin.
Infections with non-clostridial gas-forming organisms are not often encountered in orthopaedic practice. We present here a case of gas-forming infection with Escherichia coli which occurred 10 months after internal fixation of a closed fracture of the femur in an 84-year-old diabetic woman who suffered from septic nephrolithiasis. The wound infection was considered to have arisen by spread from the organisms of the infected kidney.
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A technically simple operation for the restoration of anteromedial rotational knee stability is described. It involves suturing under tension the posteromedial capsule of the knee joint to the semimembranosus tendon at its insertion into the tibia, with the leg held in full internal rotation and with the knee flexed to 60 degrees. This, in combination with the conservative treatment of meniscal injuries and with tightening of the soft tissue structures over the medial aspect of the knee, restored full or almost full anteromedial stability in the knee in 15 out of 16 young men, observed for an average of 19 months after the operation.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
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OBJECTIVE: Hyaluronic acid (HA) polymers have been found to be useful as viscosupplements for the treatment of osteoarthritis (OA) in a number of clinical studies. It appears that HA with high molecular weights (HMW) are more effective than low molecular weight HA polymers. METHODS: A single blind, initial randomized study was conducted involving two randomly selected patient groups, which received injections of either placebo or BioHy, a highly purified HMW HA produced by bacterial fermentation. HA was administered intra-articularly and several functional tests, including pain level, stiffness, and physical function, were used to score efficacy at various intervals throughout the study. RESULTS AND CONCLUSION: The results through week 20 indicate that BioHy provides relief for osteoarthritic patients without causing adverse effects, although the study was not sufficiently powered to obtain statistically significant differences between the treatment groups.
In a 6 1/2-year-old boy and a 9 1/2-year-old girl, spinal root compression was suspected on the basis of muscle wasting and weakness, diminished deep tendon reflexes, and severe pain, all in a radicular distribution. However, extensive and invasive neuroradiologic evaluation failed to demonstrate compression of spinal roots. Only several months later was the correct diagnosis of osteoid osteoma reached. In one patient, the tumor was removed and on histologic examination groups of unmyelinated nerve fibers were found near the center of the tumor nidus, generally surrounding small arterioles. In the other patient parental consent was not given for the operation. The symptoms gradually subsided, although the typical radiologic features of the tumor went unchanged. The presence of unmyelinated autonomic nerve fibers in the nidus of osteoid osteoma may explain the severe pain commonly experienced by the patients. The spinal origin of such fibres can account for the radicular syndrome, while the localization of pain and sensory findings remote from the tumor site might be explained by a mechanism similar to that responsible for "referred pain."
One hundred and forty-two arthroscopies under local anesthesia, using "high pressure" irrigation-suction technique were carried out in 137 patients. With this technique the duration of the examination was shortened, the endoscopic field of vision was enlarged (posterior horn of the menisci could be visualized in most patients), the manipulation of the scope inside the joint cavity was easier and safer. More patients could have been examined during one session. The arthroscopic accuracy verified at 51 operations, was 90.5%, which is an improvement on our previous experience with arthroscopy under general anesthesia, with tourniquet and the routine " drip" technique.