Intramedullary device for mid-shaft clavicle fractures
Intramedullary device for treatment of a mid-shaft clavicle fracture. The device comprises a base pin (1) having a primary fixation element (2) and a connection part (3). A secondary fixation element (6) is provided which is attachable to the connection part (3) at a distance along the base pin with respect to the primary fixation element(2). The connection part (3) of the base pin (1) and the secondary fixation element (6) are rotatable with respect to each other when attached, e.g. using an end cap (7).
This study was focussed on the effects of changes in interocclusal clearance on the activity of oral muscles. Two types of occlusal splints were incorporated in 20 subjects without TMJ-syndrome. Their muscle reactions were recorded electromyographically in the masseter muscle. The results show 5 groups of muscle reaction correlated with the mean postural face height. The changed height of the postural position has a significant influence on the control pattern of the masticatory system.