INTRODUCTION Overlooking an etiologic hypothesis in acute neck pain with dysphagia may lead to misdiagnosis. CASE REPORT A 51-year-old man who had received cervical manipulation came to the emergency unit with evolutive acute neck pain, cervical spine stiffness and odynophagia, without fever or other signs of identified pathology. Cervical X-ray and CT angiography of the supra-aortic vessels ...

CONTEXT In healthy boys, fractures result from trauma of various severity, suggesting contribution of an intrinsic biomechanical fragility. OBJECTIVES Our objective was to characterize bone mineral mass, microstructure, and strength in boys with and without fractures. PARTICIPANTS AND DESIGN We followed 176 healthy boys from 7.4 ± 0.5 to 15.2 ± 0.5 (mean ± sd) yr of age. OUTCOMES Areal (a...

STUDY DESIGN A retrospective comparative study. OBJECTIVE The aim of this study was to compare the outcomes of anterior screw fixation and posterior temporary-fixation in the treatment of Anderson-D'Alonzo type II odontoid fractures. SUMMARY OF BACKGROUND DATA Posterior C1-C2 temporary-fixation can spare the motion of C1-C2 in the treatment of odontoid fractures. However, it is unknown whet...

Surgical methods for type II odontoid fracture can be classified into 2 main groups: anterior or posterior approach. A more effective way to achieve bone fusion with the lowest possible surgical risk is needed. Therefore, the aim of our study was to describe and evaluate a novel technique, cable-dragged reduction/cantilever beam internal fixation for the treatment of type II odontoid fracture.T...

The awkward movements and postures associated with childcare activities can lead to musculoskeletal symptoms in the neck and shoulders. "Dakko" is a method for carrying a child in Japan, and recently it has been reported to cause shoulder stiffness. To our knowledge, the relationship between childcare activities and the physical load on the neck and shoulders is poorly understood. The present s...

The apparent stiffness tensor is an important mechanical parameter for characterizing trabecular bone. Previous studies have modeled this parameter as a function of mechanical properties of the tissue, bone density, and a second-order fabric tensor, which encodes both anisotropy and orientation of trabecular bone. Although these models yield strong correlations between observed and predicted st...

STUDY DESIGN Clinical measurement. OBJECTIVE To determine the validity and reliability of measures obtained using a custom-made device for assessing ankle dorsiflexion motion and stiffness. BACKGROUND Limited dorsiflexion has been implicated in the evolution of foot pain in a number of clinical populations. Assessment of ankle dorsiflexion range of motion (ROM) is, therefore, commonly perfo...

Porphyrin-phospholipid conjugates were used to create photonic microbubbles (MBs) having a porphyrin shell ("porshe"), and their acoustic and photoacoustic properties were investigated. The inclusion of porphyrin-lipid in the MB shell increased the yield, improved the serum stability, and generated a narrow volumetric size distribution with a peak size of 2.7 ± 0.2 μm. Using an acoustic model, ...

Mechanical testing of the Re-Flex VSP Foot was conducted on the pylon alone and on the pylon and forefoot system. Values for spring and damping correspond well to values reported in the literature for spring and damping of physiological limbs. Pylon stiffness was 49.4 kN/m for a 600 N subject and 91.4 kN/m for an 800 N subject. The vertical stiffness of the pylon and forefoot together was 31.9 ...