This paper describes the development of a knuckle walking mode of locomotion by a free-living yellow baboon (Papio cynocephalus). Some implications of this occurrence for theories of the evolution of knuckle walking are discussed.

A patient was shown to have acute arthritis in a metacarpophalangeal joint, with local calcification indicated by x-rays. Surgical and pathological examinations showed strictly intra-articular apatite crystal deposits and an erosive osteoarthritis. These crystal deposits could account for the synovial inflammation; they are thought to be related to bone fragments embedded in the synovium. The p...

The management of injury to the ulnar and radial collateral ligaments at the metacarpophalangeal joint of the thumb is complex. Treatment is dependent upon a number of factors with a wide variety of options for each ligament. Inadequate treatment has the potential to lead to a poor functional outcome. We present the relevant clinical anatomy, mechanism of injury, methods of treatment available ...

In this paper, weight, carcass dressing, weights of the primary cuts, weights of the physical components of the primary cuts, and weights of the main commercial cuts of 66 Purunã animals, of which 33 were bulls and 33 were steers were evaluated. These animals, with an average age of 19 months at the beginning of the experiment, were finished in a feedlot system during 116 days, and were fed wit...

This paper describes a parallel controller that was developed at the Center for Intelligent Systems at Vanderbilt University to control a manipulator with exible joints. The joints are actuated with muscle-like actuators called rubbertuators which exhibit nonlinear behavior. The paper presents the diierent control techniques that were used to control the manipulator. These techniques are PID, f...

To perceive the location of a tactile stimulus in external space (external tactile localisation), information about the location of the stimulus on the skin surface (tactile localisation on the skin) must be combined with proprioceptive information about the spatial location of body parts (position sense)--a process often referred to as 'tactile spatial remapping'. Recent research has revealed ...