The plantar dislocation of bone detaches the dorsal vessels supplying the bone and leads to avascular necrosis.
Criteria for a bone fracture on (multidetector) CT images are the presence of a sharp lucent line within the trabecular bone pattern, a break in the continuity of the cortex, a sharp step in the cortex, or a dislocation of bone fragments.
The configuration and tight fit of these bones is what substitutes for the ligaments in providing stability, thereby preventing side-to-side movement or dislocation of the bones in this region.
We describe a technique that prevents dislocation of the bone lid and allows for very good visualization of the entire sinus by a simple extended design and the use of resorbable pins.
It seems to me that dislocation of this bone could not take place by the contraction of these muscles, but, on the contrary, that contraction of the glutei muscles, or of any of these groups, would tend to press the head of the bone more firmly into the acetabulum.
Phelps cited Cornigan who "believed that the dislocation was a primary one, due to reflex spasm of the muscles in utero, caused by some central nerve lesion in early fœtal life [1]." In referring to his case, he then remarked, "It seems to me that dislocation of this bone could not take place by the contraction of...muscles... ........ based on the directions of muscle pull.
Because of its low cost and relatively low irradiation, CBCT may have an emergent role in making a more precise diagnosis, assessment of local extent and follow-up of fractures and dislocations of small bones and joints.
Treatment of fractures, dislocations and deformities of bones and joints was described by a number of authors since Tang Dynasty (618 907ad).
aHistory of at least one of the following pathologies: sprain or dislocation of joints or bones and joint diseases, before CHIK infection.
aHistory of at least one of the following pathologies: sprain or dislocation of joints or bones and joint diseases, before CHIKV infection.
