Effect of Muscle Energy Technique versus Maitland Mobilizationwith Iastm on Pain and Disability in Shoulder Periarthritis: ARandomized Controlled Trial

Abstract

The shoulder joint (glenohumeral joint) is a ball and socket joint
between the scapula and humerus. It is the major joint connecting
the upper limb to the trunk. It is one of the most mobile joints in
the human body, at the cost of joint stability. The shoulder joint
is formed by the articulation of the head of the humerus with the
glenoid cavity of the scapula. This gives rise to the alternate name
for the shoulder joint. Like most synovial joints, the articulating
surfaces are covered with hyaline cartilage. The head of the
humerus is much larger than the glenoid fossa, giving the joint
a wide range of movement at the cost of inherent instability. To
reduce the disproportion in surfaces, the glenoid fossa is deepened
by a fibrocartilage rim, called the glenoid labrum. As a ball and
socket synovial joint, there is a wide range of movement permitted:
Flexion, Extension, Abduction, Adduction, Internal rotation,
External rotation.