Tenure, Wage Profiles and Monitoring

We investigate the relationship between the slope of the wage-tenure profile and the level of monitoring across two cross sections of matched employer-employee British data. Our theoretical model predicts that increased monitoring leads to a decline in the slope of the wage-tenure profile. Our empirical analysis provides strong support for this prediction.monitoring, tenure, efficiency wages

Tenure, Wage Profiles and Monitoring

Efficiency wage theory predicts that firms can induce worker effort by the carrot of high wages and / or the stick of monitoring worker performance. Another option available to firms is to tilt the remuneration package over time such that the lure of high future earnings acts as a deterrent to current shirking. In this paper we undertake the first empirical investigation of this relationship between the slope of the wage-tenure profile and the level of monitoring. On the assumption that firms strive for the optimal trade-off between these various instruments, we hypothesise that increased monitoring leads to a decline in the slope of the wage-tenure profile. Our empirical analysis, using two cross sections of matched employer-employee British data, provides robust support for this prediction.Monitoring, Tenure, Efficiency, Wages.

Tenure, Wage Profiles and Monitoring

We undertake the first empirical investigation of the relationship between the slope of the wagetenure profile and the level of monitoring. On the assumption that firms strive for the optimal trade-off between these various instruments, we hypothesise that increased monitoring leads to a decline in the slope of the wagetenure profile. Our empirical analysis, using two cross sections of matched employer-employee British data, provides robust support for this prediction.efficiency wages; tenure; monitoring

Magnetic resonance imaging and magnetic resonance arthrography of the shoulder: dependence on the level of training of the performing radiologist for diagnostic accuracy

Purpose: Discrepancies were identified between magnetic resonance (MR) imaging and clinical findings in patients who had MR imaging examinations evaluated by community-based general radiologists. The purpose of this study was to evaluate the diagnostic performance of MR imaging examinations of the shoulder with regard to the training level of the performing radiologist. Methods: A review of patient charts identified 238 patients (male/female, 175/63; mean age, 40.4years) in whom 250 arthroscopies were performed and who underwent MR imaging or direct MR arthrography in either a community-based or hospital-based institution prior to surgery. All MR imaging and surgical reports were reviewed and the diagnostic performance for the detection of labral, rotator cuff, biceps, and Hill-Sachs lesions was determined. Kappa and Student's t test analyses were performed in a subset of cases in which initial community-based MR images were re-evaluated by hospital-based musculoskeletal radiologists, to determine the interobserver agreement and any differences in image interpretation. Results: The diagnostic performance of community-based general radiologists was lower than that of hospital-based sub-specialized musculoskeletal radiologists. A sub-analysis of re-evaluated cases showed that musculoskeletal radiologists performed better. κ values were 0.208, 0.396, 0.376, and 0.788 for labral, rotator cuff, biceps, and Hill-Sachs lesions (t test statistics: p = <0.001, 0.004, 0.019, and 0.235). Conclusions: Our results indicate that the diagnostic performance of MR imaging and MR arthrography of the shoulder depends on the training level of the performing radiologist, with sub-specialized musculoskeletal radiologists having a better diagnostic performance than general radiologist

Tenure, Wage Profiles and Monitoring

We undertake the first empirical investigation of the relationship between the slope of the wagetenure profile and the level of monitoring. On the assumption that firms strive for the optimal trade-off between these various instruments, we hypothesise that increased monitoring leads to a decline in the slope of the wagetenure profile. Our empirical analysis, using two cross sections of matched employer-employee British data, provides robust support for this prediction

Feasibility study of simultaneous physical examination and dynamic MR imaging of medial collateral ligament knee injuries in a 1.5-T large-bore magnet

Objective: To determine the feasibility of evaluating medial knee joint laxity with dynamic magnetic resonance (MR) imaging and simultaneous physical joint examination in a large-bore 1.5-T system. Materials and Methods: The study included 10 patients (5 women, 5 men; mean age 35years) with clinically diagnosed and categorized acute injuries of the medial collateral ligament (MCL). Intermittent valgus stress was applied separately to both the affected and the contralateral knee joint during dynamic MR imaging with a two-dimensional fast low-angle shot sequence. The width of the medial joint space and the opening angle between the femoral condyles and the tibial plateau were measured. Results obtained from dynamic MR imaging of the affected knee were compared with morphological MCL changes on static MRI, to kinematics of the contralateral side and to the clinical grading of MCL injuries. Results: On clinical examination, all patients had grade 2 MCL injuries except one, who had a grade 1 lesion. Using morphological MRI criteria, 9 grade II and 1 grade III injuries were seen. Mean medial joint space width and opening angles of all affected knees were 2.8mm and 2.7° respectively, compared with 1.7mm and 2.1° on the contralateral side. The Wilcoxon signed rank test indicated that the differences in width (P = 0.005) and opening angle (P = 0.037) between the affected and contralateral knees were significant. Conclusion: Dynamic MR imaging and simultaneous physical joint examination is feasible. Our results suggest that this technique might enable the imaging documentation of medial ligamentous knee instabilit

Hip and Groin Pain in the Professional Athlete

AbstractHip and groin pain is a common condition in professional athletes and may result from an acute injury or from chronic, repetitive trauma. It is responsible for significant morbidity, which leads to time away from training and competition, and may result in a career-ending injury. The anatomic and biomechanical causes for hip and groin injuries are among the most complex and controversial in the musculoskeletal system. This makes clinical differentiation and subsequent management difficult because of the considerable overlap of symptoms and signs. This review article will evaluate several pathologic conditions of the hip and groin in athletes, divided into acute (secondary to single event) and chronic (secondary to altered biomechanical load or repetitive microtrauma) injuries, with an emphasis on imaging in the diagnosis of these injuries. Appropriate use of imaging along with clinical findings can allow accurate diagnosis and subsequent appropriate management of these patients to ultimately allow return to athletic activity