What is the ulnar side?

What is the ulnar side?

The ulnar side of your wrist is the side of your “pinkie” finger (or small finger), and pain on this side can be very common. It’s so common, in fact, that it can sometimes be difficult to determine the exact cause.

What is ulnar and radial?

The radius and ulna are the bones of the forearm. The forearm is the region of the upper limb that extends from the elbow to the wrist. The radius bone (os radius) supports the lateral (thumb) side of the forearm and the. ulna bone (os ulna) supports the medial (little finger) side.

Is ulnar left or right?

Locate the anterior aspect of Ulna. A good landmark is the trochlear notch. When viewed anteriorly, the radial notch point to the side the bone is from, i.e. left ulna will have the radial notch (see below) on the left side of the bone.

Where is Olecranal?

The olecranon is the “tip” of the elbow and is part of the ulna. (Right) The major nerves and ligaments are highlighted.

What is the ulna function?

The main function of the ulna, along with the radius, is to assist with rotation. This rotation allows for the maximal function of the wrist and hand due to the increased range of motion. The sole motion of the elbow joint is flexion and extension, otherwise known as bending and straightening the arm.

Where is the proximal ulna?

The proximal ulna is hook-like in form which articulates with the trochlea of the humerus to create the hinge joint of the Elbow. The articulation is formed of the olecranon and the coronoid process.

What is radial side of wrist?

The radius or radial bone is one of the two large bones of the forearm, the other being the ulna. It extends from the lateral side of the elbow to the thumb side of the wrist and runs parallel to the ulna….Radius (bone)

What is radius bone?

radius, in anatomy, the outer of the two bones of the forearm when viewed with the palm facing forward. All land vertebrates have this bone. The head of the radius is disk-shaped; its upper concave surface articulates with the humerus (upper arm bone) above, and the side surface articulates with the ulna.

Is the ulna concave or convex?

The notch is concave from above downward, and divided into a medial and a lateral portion by a smooth ridge running from the summit of the olecranon to the tip of the coronoid process. The medial portion is the larger, and is slightly concave transversely; the lateral is convex above, slightly concave below.

How do you tell if a bone is right or left?

Place bone superior side facing up and the medial end facing you. If the conoid turbercle ponts to the right it is a right side bone. Place rib superior side facing up with the head placed towards you. If the rib bows to the right it is a right side bone.

What is the funny bone called?

The “funny bone” got its nickname because of that funny feeling you get after you hit it. But your funny bone isn’t actually a bone at all. Running down the inside part of your elbow is a nerve called the ulnar nerve. The ulnar nerve lets your brain know about feelings in your fourth and fifth fingers.

Where is the medial epicondyle?

elbow
The medial epicondyle is a secondary growth centre at the elbow, which first appears around age 6 and fuses to the shaft of the humerus at about age 14-17 years. A medial epicondyle fracture is an avulsion injury of the attachment of the common flexors of the forearm.

What is the anatomy of the ulnar side of the wrist?

The anatomy of the ulnar side of the wrist is complex, with many over- lapping areas that may be a cause of pain. A clear understanding of the nor- mal anatomy of the ulnar side of the wrist in addition to a systematic evalua- tion with both physical examination and radiographic imaging can often elucidate the etiology, and thus the

What bone is the ulna located on?

The ulna is one of two long bones of the forearm, and the ulna is located on the pinky side of the forearm (the radius is located on the thumb side of the forearm).

What is the lateral side of the ulna shaft called?

Ulnar shaft The shaft of the ulna is tapered distally and thicker around the neck and proximal portion. Its lateral side is sharp and gives rise to the interosseous membrane between the two bones of the forearm, hence the name – interosseous border.

What is the difference between the ulna and radius?

The ulna is longer but much narrower than the radius [3]. Though early in life when a baby is only 4-5 months old, the ulna has a 50% larger diameter compared to the radius, it gradually reduces to become half of that of the latter as the person reaches adulthood [3].