Using a chariot as a patient support system, it becomes possible to obtain consistent radiographic visualization of the hip. The chariot radiographs also allow for a more precise evaluation of the ...hip at follow-up visits. In most cases subsequent radiographs can be superimposed, differentiating between patient posture and biomechanical characteristics. The consistent patient positions and beam centering facilitate follow-up roentgenography with a higher degree of accuracy. True progression, particularly to a minor degree, can only be assessed with consistently reproducible positions for roentgenographic examinations. The chariot provides roentgenograms at a low cost and is a useful adjunct to diagnostic methods.
This work summarizes some of our studies related to the mechanism of action of gonadotropin releasing hormone including those leading to identification of the three steps of the gonadotropin ...releasing process: receptor binding, mobilization of extracellular calcium, and granule exocytosis. Evidence is also presented to suggest how these steps are integrated one to another and how they are integrated to other actions of the releasing hormone such as regulation of target cell sensitivity, and receptor regulation.
Avoidance of allogeneic blood transfusion is challenging in elderly patients with multiple comorbid conditions, who need major elective orthopaedic surgery. We conducted a study comparing the safety ...and efficacy of preoperative recombinant human erythropoietin (epoetin alfa) in patients having major elective orthopaedic surgery and in matched historical control patients. Patients aged 70 years or more undergoing primary total knee arthroplasty (TKA) or total hip arthroplasty (THA) were given two or three doses, respectively, of epoetin alfa (40,000 IU). They also received oral iron for 14 or 21 days. Epoetin alfa increased hemoglobin (Hb) and hematocrit (HCT) levels before surgery; 74% of control patients required blood transfusion, compared with 12.5% of patients receiving epoetin alfa. No serious adverse event was attributed to study treatment. These data indicate that epoetin alfa is safe and effective and reduces the need for allogeneic blood transfusion in elderly patients having elective total joint replacement.
Unicompartmental knee arthroplasty (UKA) is a commonly used procedure for patients suffering from debilitating unicompartmental knee arthritis. For UKA recipients, robotic-assisted surgery has served ...as an aid in improving surgical accuracy and precision. While studies exist detailing outcomes of robotic UKA, to our knowledge, there are no studies assessing time to return to work using robotic-assisted UKA. Thus, the purpose of this study was to prospectively assess the time to return to work and to achieve the level of work activity following robotic-assisted UKA to create recommendations for patients preoperatively. We hypothesized that the return to work time would be shorter for robotic-assisted UKAs compared with TKAs and manual UKAs, due to more accurate ligament balancing and precise implementation of the operative plan.
Thirty consecutive patients scheduled to undergo a robotic-assisted UKA at an academic teaching hospital were prospectively enrolled in the study. Inclusion criteria included employment at the time of surgery, with the intent on returning to the same occupation following surgery and having end-stage knee degenerative joint disease (DJD) limited to the medial compartment. Patients were contacted via email, letter, or phone at two, four, six, and 12 weeks following surgery until they returned to work. The Baecke physical activity questionnaire (BQ) was administered to assess patients' level of activity at work pre- and postoperatively. Statistical analysis was performed using SAS Enterprise Guide (SAS Institute Inc., Cary, North Carolina) and Excel® (Microsoft Corporation, Redmond, Washington). Descriptive statistics were calculated to assess the demographics of the patient population. Boxplots were generated using an Excel® spreadsheet to visualize the BQ scores and a two-tailed t-test was used to assess for differences between pre- and postoperative scores with alpha 0.05.
The mean time to return to work was 6.4 weeks (SD=3.4, range 2-12 weeks), with a median time of six weeks. There was no difference seen in the mean pre- and postoperative BQ scores (2.70 vs. 2.69, respectively; p=0.87).
The findings of the current study suggest that most patients can return to work six weeks following robotic-assisted UKA which appears to be shorter than conventional UKA and TKA. Future level I studies are needed to verify our study findings.
On the relativistic motion in homogeneous magnetic field Mian, H. (Peshawar Univ. (Pakistan). Physics Dept.); Mushtaq, S. (Peshawar Univ. (Pakistan). Jinnah Coll. for Women); Gul, K. (NWFP Agricultural Univ., Peshawar (Pakistan). Basic Sciences Dept.) ...
Sarhad journal of agriculture,
(Jun 1993), Letnik:
9, Številka:
3
Journal Article
Recenzirano
In this paper, we have given the general solution for the eigen functions of I in term for non-relativistic wave functions. Consequently, we have tried to derive spinor representations as well as ...spin and current densities for the energy eigen states of the various integrals of motion. In the paper, we have ignored the anti-field which come into existence when a magnetic field is applied. How much these anti-fields, which are a direct product of the fields, are going to affect the construction of energy eigen functions, are not calculated. Different relations for spin density and matter current are also assumed. The Lorentz transformation to accelerate the system could be fitted in, but with difficulties because of various constraints. Since, distance plays pivotal role in the activities of anti-fields, the rebound positions and values take an anti-form vis a vis uniform magnetic fields. This further complicate the problem because each of these is to be replaced by its transpose.
Hemiarthropalsty (HA) for proximal femur fractures (PFF) has shown good results in the elderly patient population. It has also been used to treat fractures of the proximal femur in patients with ...metastatic bone disease (MBD). Nonetheless, complications still occur in both patient populations and their effect on 90-day costs can be a great burden to the healthcare system. Thus, the purpose of this study was to evaluate and compare the outcomes and costs of HA for PFF in patients with bone metastasis versus those without it.
The Medicare standard analytical files were queried through International Classification of Diseases and Related Health Problems, ninth edition (ICD-9) codes. A case-control study comparing PFF in patients with and without MBD treated with HA was performed. Medical and surgical complications, mortality, discharge disposition, and length of stay were analyzed and compared. Outcomes were tracked for the 90-day period after surgery. Statistical analysis was performed through odds ratios, unpaired t-tests, and chi-squares.
Patients treated with HA for fractures with MBD have higher rates of medical complications compared to fracture patients without MBD. Mortality was found to be significantly greater in the MBD cohort (8.8% vs. 2.3%), as were medical complications and length of stay. Both charges and reimbursements were also significantly greater in the MBD cohort.
Patients who undergo hip HA for MBD are at increased risks of medical complications compared to patients who undergo HA for fractures without metastasis, and surgeons should be aware of these increased risks.
