1. Each mop-carrier blade (5) forms a right-angled trapezium or triangle.

2. Look at the pentagon, for instance, pull this out -- it becomes a boat shape trapezium.

3. Carpals of the left hand: There are eight carpal bones in each wrist: scaphoid, lunate, triquetral, pisiform, trapezium, trapezoid, capitate, and hamate

4. 19 Objective:To analyze the clinical result of resection arthroplasty of the trapezium combined with tendon interposition in treating osteoarthritis of the first carpometacarpal joint.

5. 1823, John Lizars, A System of Anatomical Plates of the Human Body, volume 1: This articulation of the metacarpal bone of the thumb is luxated either thenad or Anconad of the os trapezium; when thenad, there is a prominence in the palm of the hand, the finger is extended Anconad, and cannot be