![]() New aspectsĮnergy Technology Data Exchange (ETDEWEB) ![]() Radiologic examination and measurement of the wrist and distal radio-ulnar joint. A wrist joint ulnar (hemi- wrist) polymer prosthesis. 888.3810 Section 888.3810 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN. 21 Food and Drugs 8 false Wrist joint ulnar (hemi- wrist) polymer prosthesis. (orig.)Ģ1 CFR 888.3810 - Wrist joint ulnar (hemi- wrist) polymer prosthesis. Minor alterations of the distal radius may be revealed when estimating these angles. These angles of the right and left wrist were equal and no difference was found between the sexes. Ulnar head inclination and radio-ulnar angle are new concepts, being major characteristics of the DRU joint. It is suggested that the length of the radius should be judged relative to the ulna. A simple measuring technique is presented, applicable to the DRU joint and wrist favouring the ulna as the bone through which a reproducible long axis of the forearm/ wrist may be drawn. In a radioanatomic investigation, a series of 50 healthy wrists and forearms were examined. Such an examination implies a standardized and reproducible method. A proposed routine examination method of the wrist and forearm includes a true antero-posterior and a lateral projection of the radius and the ulna, performed with the forearm and wrist in a neutral rotation, a neutral wrist deviation and with the elbow angled 90 degrees. In an anatomic investigation of 5 arm specimens, we have shown that the maximum cartilage contact in the DRU joint between the ulna head and the distal radius occurs in the neutral rotation position. Biomechanically, the ulna may be regarded as the pillar around which the radius moves. The radius forms a moderately arched bone, which moves around the ulna in pronation and supination. ![]() Sahlgrenska Sjukhuset, Goeteborg Uppsala Univ.įollowing fractures of the distal radius, a relatively high incidence of complications is caused by malalignment in the distal radio-ulnar (DRU) joint recent anatomic and clinical investigations have shown a congruity of that joint to be of significant importance for restoring the function of the wrist. International Nuclear Information System (INIS) You should try different tracking speeds to find a suitable balance between Actimeter's performance and your Mac's capability.Radiologic examination and measurement of the wrist and distal radio-ulnar joint Please note that faster tracking requires more power and more computer resources. The faster the tracking is, the smoother Actimeter reacts and moves. You can also adjust the frequency of Actimeter's tracking from only once a second to as fast as 10 times a second. Shorter periods make Actimeter react faster, longer periods give a more realistic view of your activity. The score is calculated based on a time period that you can adjust yourself: the time period can be as short as one minute or as long as 90 minutes. It then calculates a score value on a scale from 0 to 100, using a carefully designed mathematical formula. Actimeter is an application that tracks your computer activity and shows it on a traditional, easy-to-read meter.Īctimeter does this by counting the frequency of all your computer interactions or events: mouse clicks, keystrokes, scrolls and mouse moves. ![]()
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