What is the resting position of the glenohumeral joint?

For the in vivo glenohumeral (GH) joint, the resting position is generally considered to be located at a position in neutral rotation between 55 and 70 degrees of shoulder abduction with respect to the trunk in the plane of the scapula (commonly defined as the plane 30° anterior to the frontal plane).

What is the resting position of the scapula?

Normally, the scapula rests at a position on the posterior thorax approximately 2 inches from the midline, between the second through seventh ribs (scapula extends from the level of T2 spinous process to T7 orT9 spinous process, depending on the size of the scapula) and the medial border is about 6 cms lateral to the …

What is the glenohumeral joint formed by?

The glenohumeral (GH) joint is a true synovial ball-and-socket style diarthrodial joint that is responsible for connecting the upper extremity to the trunk. It is one of four joints that comprise the shoulder complex. This joint is formed from the combination of the humeral head and the glenoid fossa of the scapula.

What do you mean by rest position?

A resting position or rest position is a default human position or pose assumed (typically deliberately) when a person is not engaged in an activity that demands some other pose, or between poses.

What is glenohumeral joint?

The glenohumeral joint is a ball and socket joint that includes a complex, dynamic, articulation between the glenoid of the scapula and the proximal humerus. Specifically, it is the head of the humerus that contacts the glenoid cavity (or fossa) of the scapula.

What is humeroulnar joint?

The humeroulnar joint is formed between the humerus and ulna and allows flexion and extension of the arm. The humeroradial joint is formed between the radius and humerus and allows movements like flexion, extension, supination, and pronation.

What type of joint is scapula?

ball-and-socket joint
The glenohumeral joint is structurally a ball-and-socket joint and functionally is considered a diarthrodial, multiaxial, joint. [1] The glenohumeral articulation involves the humeral head with the glenoid cavity of the scapula, and it represents the major articulation of the shoulder girdle.

What are AC joints?

The acromioclavicular, or AC, joint is a joint in the shoulder where two bones meet. One of these bones is the collarbone, or clavicle. The second bone is actually part of the shoulder blade (scapula), which is the big bone behind the shoulder that also forms part of the shoulder joint.

What are the five kind of rest position?

Rest Positions at the Halt

  • Platoon, ATTENTION.
  • These positions are used to rest an element for short periods, while at the halt.
  • The commands for these positions are Parade, REST; Stand At, EASE; AT EASE; and REST.

What is the natural position of the hand?

Proper Hand Position. Let your arms hang at your sides. Notice how the fingers are slightly curved at the middle joint. This is a natural, unforced, relaxed hand position.