Anatomy and physiology of the shoulder

Initiates abduction stabilize shoulder superiorly. The hip joint and the glenohumeral shoulder joint are the only ball-and-socket joints of the body.

The shoulder joint is formed by the meeting of three bones.

Anatomy and physiology of the shoulder. The Clavicle and Scapula are both considered to be part of the shoulder girdle the structure that supports the appendages of the upper body. The shoulder provides stability for the neck or upper third of the spine. Bones of the Shoulder.

Scapula wing bone or blade bone connects the humerus and clavicle and lies on the back of the rib cage. Shoulder Anatomy and Physiology. The omni-directional shoulder is the most mobile and the most versatile of the human joints.

The shoulder in conjunction with the elbow joint and the ulnar and radial bones of the forearm may be operated to create a powerful lever to perform lifting or prying movements. The ability of the shoulder to rotate is. The scapula or shoulder blade is a flat triangular bone located to the posterior of the shoulder.

The scapula articulates with the clavicle through the acromion process a large projection located superiorly on the scapula forming the acromioclavicular joint. The human shoulder is a powerful and large anatomical structure. The hinging ball and socket joint allows for vast gains in momentum over short periods of time and is relatively versatile.

The shoulder anatomy allows for many types of throwing fine motor movement down to typing powerful grasping hefting objects climbing combat quadruped movement etc. The shoulder is one of the largest and most complex joints in the body. The shoulder joint is formed where the humerus upper arm bone fits into the scapula shoulder blade like a ball and.

Shoulder Labrum. The labrum is a rim of cartilage that surrounds the socket of the shoulder joint. The socket of the shoulder joint is shallow and the labrum gives the socket more depth and thus more stability.

The labrum also serves as the attachment of. The shoulder joint also known as the glenohumeral joint is a ball and socket joint with the most extensive range of motion in the human body. The shoulder muscles have a wide range of functions including abduction adduction flexion extension internal and external rotation1 The central bony structure of the shoulder is the scapula where all of the muscles interact.

Review Functional anatomy of the shoulder complex. Culham E Peat M. J Orthop Sports Phys Ther.

Functional anatomy of the shoulder complex. Initiates abduction stabilize shoulder superiorly. Infraspinous fossa of scapula.

Middle facet of greater tubercle. Lateral rotation adduct stabilizes scapula posteriorly. The shoulder complex composed of the clavicle scapula and humerus is an intricately designed combination of four joints the Glenohumeral GH Joint the Acromioclavicular AC Joint and the Sternoclavicular SC Joint and a floating joint known as the Scapulothoracic ST joint.

Pectoralis major claviclesternum upp. Deltoid claviclescapula deltoid tube. Name origin insertion and basic function.

Name origin insertion and. Responsible for the movement of our ever-important hands the shoulder is an extremely important part of the body when it comes to getting done what it is we want to get done. What can you tell us about how these joints work.

Find out in this Anatomy of the Shoulder Quiz. As the most mobile joint in the body the shoulder is structurally insecure. The ball-shaped humeral head rotates and glides on a shallow scapular cup.

A limited amount of passive stability is provided by the glenoid labrum which slightly deepens the scapular cup and by ligaments reinforcing the capsule on its superior and anterior surfaces. The hip joint and the glenohumeral shoulder joint are the only ball-and-socket joints of the body. At the hip joint the head of the femur articulates with the acetabulum of the hip bone and at the shoulder joint the head of the humerus articulates with the glenoid cavity of the scapula.

The upper fibres raise the shoulder girdle the middle fibres pull the scapula towards the vertebral column and the lower fibres draw the scapula and shoulder downwards. One of the most commonly found muscles to hold upper body tension causing discomfort and restrictions in the neck and shoulder. Levator scapula le-vay-tor skap-you-lee.

Shoulder and Arm Anatomy The shoulder joint is a synovial ball and socket joint and allows for a wide range of movements such as flexion extension abduction adduction medial and lateral rotation and circumduction R. Type 1 Shoulder Separation. - No severe tearing or fracture commonly referred to as a sprain.

Type 2 Shoulder Separation. - Complete tearing of the acromioclavicular ligament partial tear of the. Fingers and toes digits Femoral.

Side of the leg overlies the fibula bone Inguinal. Eyes or eye sockets orbits Patellar. Kneecap anterior knee Pelvic.

The shoulder joint and its associated joints form one of the most complex joint systems of the human locomotor apparatus. Its large range of motion is made possible by the interplay of 5 joints. In this episode of eOrthopodTV orthopaedic surgeon Randale C.

Sechrest MD narrates an animated tutorial on the basic anatomy of the shoulder. The hip joint and the glenohumeral shoulder joint are the only ball-and-socket joints of the body. At the hip joint the head of the femur articulates with the acetabulum of the hip bone and at the shoulder joint the head of the humerus articulates with the glenoid cavity of the scapula.

The shoulder joint is formed by the meeting of three bones. The humerus the scapula which is more tubular than the flattened mammalian one and a third bone known as the coracoid. This latter bone forms a strut propping the shoulder joint against the sternum.