| trochlear synovial bursa | <anatomy> The synovial sheath enclosing the tendon of the superior oblique muscle as it passes through the trochlea. Synonym: vagina tendinis musculi obliqui superioris, synovial trochlear bursa, trochlear synovial bursa, vagina synovialis trochleae. (05 Mar 2000) |
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| anterior border of ulna | The ridge on the body of the ulna that extends from the tuberosity to the anterior part of the styloid process. Synonym: margo anterior ulnae. (05 Mar 2000) |
| anterior surface of ulna | The anterior surface of the ulna. Synonym: facies anterior ulnae. (05 Mar 2000) |
| articular circumference of ulna | The portion of the head of the ulna that articulates with the ulnar notch of the radius. Synonym: circumferentia articularis ulnae. (05 Mar 2000) |
| body of ulna | The shaft of the ulna between the proximal extremity and the head. Synonym: body of ulna. (05 Mar 2000) |
| medial surface of ulna | medial surface of ulna |
| posterior border of ulna | The sinuous palpable subcutaneous ridge on the posterior aspect of the ulna that extends from near the olecranon to the styloid process, demarcating "anterior" (flexor) from "posterior" (extensor) compartments of forearm. Synonym: margo posterior ulnae. (05 Mar 2000) |
| posterior surface of ulna | The posterior surface of the ulna. Synonym: facies posterior ulnae. (05 Mar 2000) |
| head of ulna | The small rounded distal extremity of the ulna articulating with the ulnar notch of the radius and the articular disk. Synonym: caput ulnae. (05 Mar 2000) |
| shaft of ulna | The shaft of the ulna between the proximal extremity and the head. Synonym: body of ulna. (05 Mar 2000) |
| styloid process of ulna | A cylindrical, pointed palpable projection from the medial and posterior aspect of the head of the ulna, to the tip of which is attached the ulnar collateral ligament of the wrist. Synonym: processus styloideus ulnae. (05 Mar 2000) |
| interosseous border of ulna | The ridge along the lateral side of the body of the ulna to which is attached the interosseous membrane. Synonym: margo interosseus ulnae. (05 Mar 2000) |
| tuberosity of ulna | A prominence at the lower border of the anterior surface of the coronoid process, giving attachment to the brachialis muscle. Synonym: tuberositas ulnae. (05 Mar 2000) |
| ulna | <anatomy> One of the bones that comprise the forearm. The largest aspect articulates with the humerus at the elbow joint and the smallest portion of the ulna articulates with the carpal bones in the wrist. (27 Sep 1997) |
| ulna fractures | Fractures of the larger bone of the forearm. (12 Dec 1998) |