Bilateral femur neck fractures in young adult patients are very rare in atraumatic circumstances. We report a young premenopausal female with osteomalacia secondary to vitamin D deficiency and spontaneous bilateral femur neck fractures. Patients had no reported risk factors for osteomalacia but hypovitaminosis D was noted on laboratory evaluation. Osteomalacia secondary to low serum levels of v...

In two years we treated four women with ununited stress fractures of their proximal tibial diaphyses. They all had arthritis and valgus deformity. The stress fractures had been treated elsewhere by non-operative means in three patients and by open reduction and internal fixation in one, but had failed to unite. After treatment with a modular total knee prosthesis with a long tibial stem extensi...

Assessment of the reservoir structure and determination of theinsitu stress direction arenecessary in oil production optimization andfield development. Today, the application of reservoir software and Image logsplay a central role in resolving this problem. Electricand ultrasonic imaging tools record vast amounts of high-resolution data within the borehole wall. This enables the geoscientists t...

In order to study the fracture propagation behavior after interaction between hydraulic fractures and natural fractures, cohensive unit of Abaqus finite element software is used simulate influence in rock on fractures. The simulation results show that when approach angle kept constant, as in-situ stress difference increases, are more likely penetrate expand along direction maximum horizontal pr...

A stress fracture represents the inability of the skeleton to withstand repetitive bouts of mechanical loading, which results in structural fatigue and resultant signs and symptoms of localized pain and tenderness. To prevent stress fractures, an appreciation of their risk factors is required. These are typically grouped into extrinsic and intrinsic risk factors. Extrinsic risk factors for stre...

Background Adolescent athletes are a high-risk population for stress fractures. We report four cases of stress fractures of the second proximal phalanx, which had not been previously diagnosed as the location of the stress fracture of the foot, in teenage athletes. Case report All fractures were on the plantar side of the proximal phalangeal base, and the oblique images of the plain radiograp...

CONTEXT Stress fractures are common injuries in athletes, often difficult to diagnose. A stress fracture is a fatigue-induced fracture of bone caused by repeated applications of stress over time. EVIDENCE ACQUISITION PubMed articles published from 1974 to January 2012. RESULTS Intrinsic and extrinsic factors may predict the risk of stress fractures in athletes, including bone health, traini...

INTRODUCTION Stress fractures are overuse injuries most commonly seen in athletes, military recruits, and individuals with endocrine abnormalities. It has been demonstrated that chronic cases of anterior tibial stress fractures refractory to conservative management respond well to intramedullary nailing. To our knowledge, only one report has been published concerning patients with bilateral tib...

Bilateral stress fractures of the ulna are extremely rare and have only been described in non-adults. In this case report we present a young adult weightlifter who reported bilateral stress fractures of both ulnae after increasing his training frequency and load. Stress fractures of the ulnae are examples of bone stress injuries due to repetitive muscle pull. The diagnosis can be made by radiog...

BACKGROUND Stress fractures are overuse injuries that historically afflict a large number of military recruits, likely because of the sudden increase of high-intensity activity, such as running and marching. CASE A 23-year-old male U.S. Air Force recruit presented with hip pain during his second week of basic training and was diagnosed with bilateral femoral neck stress fractures, grade 4 on ...