We studied the integrity of rotator cuff in both dominant and non-dominant shoulders 90 asymptomatic adults between ages 30 99 years using ultrasound. The criteria for diagnosis had been validated on unembalmed cadaver specimens. found no statistically significant difference incidence impingement findings arms or genders. prevalence partial- full-thickness tears increased markedly after 50 age: these were present over 50% seventh decade 80% subjects 80 age. Our results indicate that...

In a prospective study of 295 male Israeli military recruits 31% incidence stress fractures was found. Eighty per cent the were in tibial or femoral shaft, while only 8% occurred tarsus and metatarsus. Sixty-nine asymptomatic, but those tibia. Even asymptomatic do, however, need to be treated. Possible explanations for unusually high this are discussed.

In a prospective study, quantitative measures of the structure longitudinal arch foot were established and related to incidence stress fractures in bones lower limbs military recruits. addition, role semirigid orthotic device (Langer orthotic) preventing was evaluated as function arch. Femoral tibial found be more prevalent presence feet with high arches, whereas metatarsal higher low arches. The use an reduced femoral only arches among findings suggest that normal acts better shock absorber...

To answer the question why such large differences in stress fracture morbidity rates (2% to 64%) exist different countries, we prospectively evaluated 312 re cruits for possible risk factors fractures. Prior training, each recruit underwent an evaluation includ ing following: orthopaedic examination, foot and tibial radiographs, measurements of bone width, mineral content, density, aerobic physical fitness leg power, assessments somatotype smoking habits, sociological psy chological factors....

In a prospective study of risk factors for lateral ankle sprain among 390 male Israeli infantry recruits, 18% incidence sprains was found in basic training. There no statistically significant difference the between recruits who trained modified basketball shoes or standard lightweight boots. By multivariate stepwise logistic regression relationship body weight x height (a magnitude which is proportional to mass moment inertia around horizontal axis through ankle), previous history sprain,...

Rotator cuff tears are the most frequent tendon injury in adult population. However, natural history of nonoperatively treated full-thickness is poorly defined. Knowledge expected evolution tear size important when considering nonoperative versus surgical care, especially relatively young, active patients.To evaluate change rotator over 2 to 3 years' follow-up.Case series; Level evidence, 4.The authors prospectively followed patients 60 years old or younger who had a equal larger than 5 mm,...

The effect of intense physical training on the bone-mineral content young adults who are unaccustomed to activity has not yet been established. In this study, 268 male recruits, eighteen twenty-one years old, were evaluated before and after fourteen weeks strenuous training. both legs at level distal third tibia in each individual was measured using single-beam photon absorptiometry. subjects started their with equal values for legs. During period, average left leg increased by 11.1 per cent...

A prospective study of 295 infantry recruits has shown that the mediolateral width tibia measured radiographically at each three different levels in bone had a statistically significant correlation with total incidence stress fractures as well those alone or femur alone. narrow tibial was to be risk factor, but cortical thickness not found significant.

This article describes FRACAS, a computer-integrated orthopedic system for assisting surgeons in performing closed medullary nailing of long bone fractures. FRACAS's goal is to reduce the surgeon's cumulative exposure radiation and surgical complications associated with alignment positioning errors fragments, nail insertion, distal screw locking. It replaces uncorrelated, static fluoroscopic images virtual reality display three-dimensional models created from preoperative computed tomography...

The prediction of patient-specific proximal femur mechanical response to various load conditions is major clinical importance in orthopaedics. This paper presents a novel, empirically validated high-order finite element method (FEM) for simulating the bone loads. A model geometry was constructed from quantitative computerized tomography (QCT) scan using smooth surfaces both cortical and trabecular regions. Inhomogeneous isotropic elastic properties were assigned distinct continuous spatial...

In a prospective study of stress fractures the hypothesis that shock-absorbing orthotic device worn within military boots could lessen incidence was tested. The metatarsal, tibial, and femoral lower in group, but only latter difference statistically significant. time onset location between nonorthotic users did not differ. These findings suggest fractures, which are most dangerous type fracture because their high risk developing into displaced can be reduced by an device.

A prospective study of 390 infantry recruits revealed that the medial tibial intercondylar distance and isometric strength quadriceps, tested at 85 degrees flexion knee, had a statistically significant correlation with incidence patellofemoral pain caused by overactivity. Increased increased quadriceps were therefore deemed to be risk factors for this syndrome.

We report a prospective study of 783 male Israeli recruits aged from 17 to 26 years. The risk stress fracture was inversely proportional age on both univariate and multivariate analysis. Each year increase above years reduced the by 28%.

We undertook a prospective study in 51 male patients aged between 17 and 27 years to ascertain whether immobilisation after primary traumatic anterior dislocation of the shoulder external rotation was more effective than internal preventing recurrent physically active population. Of patients, 24 were randomised be treated by traditional brace immobilised 15° 20°. After immobilisation, standard regime physiotherapy then assessed clinically for evidence instability. When reviewed at mean 33.4...

Background —Bone must have sufficient strength to withstand both instantaneous forces and lower repetitive forces. Repetitive loading, especially when bone strain and/or rates are high, can create microdamage result in stress fracture Aim —To measure vivo strains human tibia during high impact moderate exercises. Methods —Three gauged staples were mounted percutaneously a rosette pattern the mid diaphysis of medial six normal subjects, tibial measured running at 17 km/h drop jumping from...

Repetitive high bone strain and/or rates, such as those that occur during running, contribute to stress fractures well promoting maintenance of or increase in mass. Kinematic differences are known exist between overground and treadmill running these may be reflected different strains rates the two techniques.To measure vivo human tibia determine if there significant rate levels techniques.A gauged staple was mounted percutaneously along axial direction mid diaphysis medial three subjects,...

Mechanical loading during physical activity produces strains within bones. It is thought that these forces provide the stimulus for adaptation of bone. Tibial and rates strain were measured in vivo six subjects running, stationary bicycling, leg presses stepping compared with those walking, an which has been found to have only a minimal effect on bone mass.

In three prospective epidemiologic studies of the effect pre-military-induction sport activities on incidence lower extremity stress fractures during infantry basic training, recruits who played ball sports (principally basketball) regularly for at least 2 years before training had a significantly (13.2%, 16.7%, and 3.6% in studies, respectively) than did not play (28.9%, 27%, 18.8%, respectively). Preinduction running was related to fracture. To assess tibial strain environment these...