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Search Results: 1 - 10 of 811 matches for " Nahum Rosenberg "
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Arthroscopic Subacromial Decompression for Small and Medium Size Tears of Rotator Cuff without Tendon Repair  [PDF]
Suhail Karkabi, Nahum Rosenberg
Open Journal of Clinical Diagnostics (OJCD) , 2014, DOI: 10.4236/ojcd.2014.44034
Abstract: According to our previous clinical impression, we hypothesized that patients who had symptomatic rotator cuff tendon tear in a diamemter below 3 cm would benefit from arthroscopic subacromial decompression only, without the need for the repair of the thorn tendon. From 1998 to 2003, 160 patients (168 shoulders) had arthroscopic subacromial decompression for impingement syndrome with a torn rotator cuff without repairing the tear of the cuffs (120 males and 40 females). The average patient age was 64 years and the average follow up was 30 months. At follow up, 96 patients (60%) had full recovery; 55 patients (35%) had residual low grade shoulder pain on effort and 7 patients (5%) had poor outcome. In the last group of patients with unsatisfactory outcome, the postoperative Constant score was only 64 points. In 95% of patients, the average Constant score values raised from average preoperative value of 62 to postoperative average score of 82. According to these results, there is an indication that in patients in the seventh decade of life or older with symptomatic rotator cuff tear, pain relief and good shoulder function can be achieved by more conservative approach of subacromial decompression alone, providing a clear diagnosis that the diameter of the tear in the supraspinatus and infraspinatus tendons is below 3 cm.
Arthroscopic Debridement with Lavage and Arthroscopic Lavage Only as the Treatment of Symptomatic Osteoarthritic Knee  [PDF]
Suhail Karkabi, Nahum Rosenberg
Open Journal of Clinical Diagnostics (OJCD) , 2015, DOI: 10.4236/ojcd.2015.52013
Abstract: In this prospective follow up study we evaluated and compared the effect of arthroscopic lavage with and without debridement as a treatment of moderately osteoarthritic knees in middle aged and elderly population. The study group comprised of 500 patients (250 patients for each type of treatment, mean age 58 years). The patients were followed six months, three years and six years postoperatively. Following both treatments there was a clear deterioration in function of the knee function over the time, as measured starting at six months follow up until six years postoperatively (p < 0.001). This deterioration was more prominent in patients after treatment by the arthroscopic lavage only. We show that for the patients with high functional demand and expectations for long term rehabilitation and improvement both arthroscopic treatments are not satisfactory in more of 60% of cases.
Low Friction Traction for Cervical Spine Dislocation  [PDF]
Lior Merom, Michael Soudry, Nahum Rosenberg
Open Journal of Clinical Diagnostics (OJCD) , 2015, DOI: 10.4236/ojcd.2015.53019
Abstract: In order to reduce the magnitude of the force applied to skull for treatment of acute cervical spine dislocation, we developed a method of skeletal traction based on reduction of friction forces under the patient’s head. Traction force was applied to sculls of five patients with cervical fracture-dislocations. A difference in friction interface between the patient’s head and shoulder girdle was created. The traction weight required for the reduction of the vertebral dislocation was significantly lower than an expected minimal traction weight in the commonly used techniques (p = 0.013). The presented method permits an effective and safe reduction of dislocated cervical vertebra by a relatively low traction force.
The diagnostic value of the shoulder rotator cuff muscles’ isometric force testing  [PDF]
Yaron Berkovitch, Maruan Haddad, Yaniv Keren, Michael Soudry, Nahum Rosenberg
Open Journal of Clinical Diagnostics (OJCD) , 2013, DOI: 10.4236/ojcd.2013.33025
Abstract: The most prevalent group of disorders of human shoulder is related to the muscles of the rotator cuff. In order to develop a mechanical method for rotator cuff muscles’ evaluation, we hypothesized that measurement of the isometric force generated by the individual muscle of the rotator cuff might detect the variations, which are characteristic to the different disorders of rotator cuff muscles in adults. The isometric force of supraspinatus, infraspinatus and subscapularis muscles were measured in patients with rotator cuff tears, calcific tendinitis and subacromial impingement syndrome, 30 patients with each disorder, and compared to the normal values from our previous study. Torque of the force was calculated and normalized to lean body mass. The profiles of the mean torque-time curves of each group were compared statistically. We found the expected significantly lower profiles of the torque-time curves of all the tested rotator cuff muscles in comparison to the normal values. The best resolution between the curves of different study groups was found in the testing of the infraspinatus muscles. Therefore the previously unrecognized variations of rotator cuff muscles’ isometric strength build up patterns in the common disorders involving the rotator cuff muscles were revealed. The presented data might be a basis for the future development of a simple mechanical diagnostic method for identification of the abnormal patterns of muscle isometric strength in patients with rotator cuff muscles’ pathology.
Abdominal Skin Necrosis after Enoxaparin Treatment  [PDF]
Haddad Maruan, Nierenberg Gabriel, Falah Mazen, Rosenberg Nahum
Open Journal of Clinical Diagnostics (OJCD) , 2014, DOI: 10.4236/ojcd.2014.41010
Abstract: Subcutaneous low molecular weight heparin (LMWH) injection is a prophylactic treatment for deep vein thrombosis after surgery in lower limb before the patient is fully ambulated. This treatment is usually safe. One of the major and rare complications of the LMWH injection is thrombocytopenia, which is usually self-limiting. We present a rare case of patient with thrombocytopenia, induced by subcutaneous injection of LMWH (enoxaparin) that was complicated with a large hematoma at the injection site with subsequential skin necrosis, sepsis with fatal outcome. We would like to emphasize this rare complication of the common prophylactic treatment by LMWH in order to pursue this diagnosis when similar cutaneous manifestation might appear in patients who receive prophylactic treatment with LMWH.
Improvements in survival of the uncemented Nottingham Total Shoulder prosthesis: a prospective comparative study
Nahum Rosenberg, Lars Neumann, Amit Modi, Istvan J Mersich, Angus W Wallace
BMC Musculoskeletal Disorders , 2007, DOI: 10.1186/1471-2474-8-76
Abstract: We investigated the impact of changes in the design of Nottingham TSR prosthesis on its survivorship rate.Survivorship analyses of three types of uncemented total shoulder arthroplasty prostheses (BioModular?, initial Nottingham TSR and current Nottingham TSR systems with 11, 8 and 4 year survivorship data respectively) were compared. All these prostheses were implanted for the treatment of disabling pain in the shoulder due to primary and secondary osteoarthritis or rheumatoid arthritis. Each type of the prosthesis studied was implanted in consecutive group of patients – 90 patients with BioModular? system, 103 with the initial Nottingham TSR and 34 patients with the current Nottingham TSR system.The comparison of the annual cumulative survivorship values in the compatible time range between the three groups was done according to the paired t test.The 8-year and 11-year survivorship rates for the initially used modified BioModular? uncemented prosthesis were relatively low (75.6% and 71.7% respectively) comparing to the reported survivorship of the conventional cemented implants. The 8-year survivorship for the uncemented Nottingham TSR prosthesis was significantly higher (81.8%), but still not in the desired range of above 90%, that is found in other cemented designs. Glenoid component loosening was the main factor of prosthesis failure in both prostheses and mainly occurred in the first 4 postoperative years. The 4-year survivorship of the currently re-designed Nottingham TSR prosthesis, with hydroxylapatite coating of the glenoid baseplate, was significantly higher, 93.1% as compared to 85.1% of the previous Nottingham TSR.The initial Nottingham shoulder prosthesis showed significantly higher survivorship than the BioModular? uncemented prosthesis, but lower than expected. Subsequently re-designed Nottingham TSR system presented a high short term survivorship rate that encourages its ongoing useInflammatory or degenerative processes of glenohumeral joint lead to
Striking Century-Long Changes in Marine Benthos  [PDF]
Rutger Rosenberg
Journal of Environmental Protection (JEP) , 2014, DOI: 10.4236/jep.2014.513125
Abstract: One of the oldest published records of benthic fauna was made in 1893 by dredging along transects from soft bottoms, sand and shell debris to rocky bottoms in an archipelago at the Swedish Skagerrak coast. Three of the transects were revisited in 2010 and then fewer taxa were recorded and the shared species between sampling dates at the transects were only between 8% and 12%. The main causes for the drastic changes are suggested to be large-scale eutrophication changing the vegetation composition and variation of climatic factors.
Equipment review: Tracheal gas insufflation
Avi Nahum
Critical Care , 1998, DOI: 10.1186/cc124
Abstract: Carbon dioxide elimination during TGI depends on catheter flow rate because fresh gas flushes a greater portion of the proximal deadspace at higher flow rates. Moreover, at higher flow rates, turbulence generated at the catheter tip may further enhance distal gas mixing. The volume of fresh gas introduced into the trachea during TGI depends on expiratory time (TE) and catheter flow rate (Vc). At a certain TE × Vc, fresh gas completely sweeps the proximal anatomic deadspace during expiration. At that point, increasing Vc most likely does not dilute the CO2 residing in the series deadspace any further. This operational charactertistic of TGI, and the fact that the decrease in the partial pressure of CO2 (PaCO2) caused by a reduction in total physiologic deadspace fraction (VD/VT) is much less at lower VD/VT, limits the decrement in PaCO2 afforded by TGI at high Vc [8]. Nevertheless, at high Vc (< 10–15 1/min) PaCO2 continues to decrease with increasing Vc, but at a slower rate [8,9,10]. Once the series deadspace is flushed completely by the fresh gas during expiration, the flow dependence of PaCO2 is thought to be secondary to enhanced turbulent mixing in the airways distal to the catheter tip [5,11,12]. TGI is unlikely to be very effective when the alveolar as opposed to the series compartment dominates the total physiologic deadspace; yet, at small tidal volumes (whenever series deadspace is especially high) or when alveolar ventilation is very low. TGI should be a helpful adjunct to conventional mechanical ventilation (CMV) [8].During TGI, more distal catheter placement improves CO2 elimination as TGI can flush a greater portion of the deadspace proximal to the catheter tip during exhalation [5,7]. Advancing the catheter also moves the turbulence zone generated by the catheter closer to the periphery, thereby improving the efficacy of TGI. However, for most clinical applications, TGI efficiency is optimized when the catheter tip is positioned within a few centimete
Les juifs à Smyrne : de l’enfermement à l’ouverture vers le monde Jews in Smyrna : from Confinement to Awakening.
Henri Nahum
Revue des Mondes Musulmans et de la Méditerranée , 2012, DOI: 10.4000/remmm.2799
Abstract: Constituée plus tard que celles des autres cités de l'Empire ottoman, la communauté juive de Smyrne conna t une période de prospérité au xviie siècle, co ncidant avec le développement économique de la ville. D'abord installé près de la c te, le quartier juif se situe ensuite au centre de la cité, près du Konak ; au xixe siècle, il a un aspect misérable ; les habitants n'en sortent guère. Vers 1900, les juifs de Smyrne participent à nouveau à l'expansion économique du grand port égéen et sortent de leur isolement. L'incendie de septembre 1922, qui met fin à la guerre gréco-turque, bouleverse l'équilibre urbain. La transformation de l'état plurinational ottoman en un état-nation turc, les maladresses du gouvernement républicain, l'instauration d'un imp t frappant préférentiellement les non musulmans, la création de l'état d'Isra l, provoquent une émigration massive des juifs de Smyrne. Ils sont aujourd'hui moins de 2 000. Set up later than those of the other cities of the Ottoman Empire, the Jewish community of Smyrna enjoyed a time of prosperity in the 17th century connected to the expanding commercial activity of the city. First located by the seaside, the Jewish quarter moved later to the center of the city, near the Konak. In the 19th century, it looked shabby; its inhabitants seldom went out of it. About 1900, the Jews of Smyrna take part in the economical expansion of the great Aegean port and give up their isolation. The fire of September 1922 which puts an end to the Greek-Turkish war changes drastically the equilibrium of the city. The transformation of the plurinational Ottoman Empire into a Turkish nation-state, the awkwardness of the republican government, a capital levy on non-Muslim citizens, the creation of the State of Israel, empty the city of its Jewish inhabitants. Today, their number is less than 2 000.
AGN Outflows: Analysis of the Absorption Troughs
Nahum Arav
Physics , 2002,
Abstract: With the advent of Chandra and XMM, X-ray lines spectroscopy of AGN outflows is off to an exciting start. In this paper we illuminate some of the complications involved in extracting the outflow's physical conditions (ionization equilibrium, total column density, chemical abundances) from such spectroscopic data. To do so we use the example provided by high-quality FUSE and HST observations of the outflow seen in NGC 985. We show how simple determinations of the column density in the UV absorption lines often severely underestimate the real column densities. This is due to strong non-black saturation of the absorption troughs, where in many cases the UV line profile mainly reflects the velocity-dependent covering factor rather than the column density distribution. We then show that underestimating individual ionic column densities by a factor of 5 can cause a two orders of magnitude error in the inferred total column density of the outflow. In some case this will be enough to associate the UV and X-ray absorber with the same outflowing material. Finally, we note that the UV spectra of NGC 985 have 10--20 times the resolution and 2--5$\times$ the S/N per resolution element compared with the best available Chandra spectra of similar objects. Therefore, in the X-ray band non-black saturation and velocity-dependent covering factor effects will only become abundantly clear using vastly more capable future X-ray telescopes. However, by taking into consideration the lessons learned from the UV band, we can greatly improve the quality of physical constraints we extract from current X-ray data of AGN outflows.
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