Frozen shoulder is a widespread disabling condition which causes significant disability. In spite of hundred years of treating this condition the clarity, diagnosis, pathology and most effectual treatments are still need to be explored.It is characterized by the impulsive onset of pain, inflexibility and restricted range of motion at the shoulder joint. The pathophysiology of frozen shoulder is not exactly known. However it is generally supposed that a combination of contracture of capsule, rotator cuff tendon fibrosis, sub-scapular depression and the coraco-humeral ligament lead to comprehensive movement restriction at the glenohumeral joint. Frozen shoulder is considered to have an occurrence of 3%-5% in the common population and up to 20% in those with diabetes mellitus. Between the ages of 40 and 60 it is most prevalent and is almost not found in ages below that and in persons who work manually. It is somewhat more common in women then man. Bilateral frozen shoulder occurs in 14% of population and up to 20% of population will develop some degree of related symptoms in the other shoulder. the most common associated risk factor for developing the frozen shoulder is diabetes mellitus, and a patient with diabetes has 10%-20% risk of developing frozen shoulder.

Thoracic spine manipulation has received growing attention in treating the patients with shoulder pain. Recent studies have shown that thoracic manipulation is an effective combination therapy for patients with shoulder pain. The position of thoracic spine significantly have an effect on shoulder joint and shoulder kinematics during movement on different planes as there is decreased muscle force when a person is in a slouch position. Thoracic Spine manipulation is a treatment choice by the number of health professionals especially the physical therapist. Literature defines thoracic manipulation as highly practiced and skilled passive thrust to joints and adjacent structures and soft tissues at variable intensity consisting of small amplitude and high velocity therapeutic movements at thoracic spine including cervicothoracic junction. Much of the recent studies are focusing on the relationship of thoracic spine to other body regions such as neck and shoulder rather than thoracic spine itself this phenomenon is described as regional interdependence.although cervical spine manipulation has also improve pain and disability in patients with non-specific shoulder pain but have some evidence of thrust complications relating to cervical spine. Similar neurophysiologic associations are documented with thoracic spine manipulation in relation with shoulder pain with less complications and thrust risk.

Spinal manipulation of the thoracic spine can be an effective intervention for treating patients with shoulder pain or dysfunctions. Treatment protocols focusing the thoracic spine must be added to the intervention of rehabilitation of patients with shoulder pain in clinical practice. In common clinical practice a series of thoracic hypomobility has been noticed at the T1-T3 spinal segments or the T3-T5 segments in patients with shoulder pathologies. In literature manipulation of thoracic regions has been shown to produce improvement in upper extremity blood flow and circulation. Researches related to thoracic spine manipulation is signifying a association between manipulation of the thoracic spine and enhancement in shoulder function and potency. Thus the purpose of the study is to evaluate the possible effect of thoracic manipulation on shoulder range of motion and function in combination with conventional intervention for the individuals with frozen shoulder.

Thoracic spine thrust manipulation provided a statistically significant decrease in self-reported pain measures and disability in patients with Shoulder impingement syndrome. Thoracic spine and upper rib manipulative therapy is associated with improvement in shoulder pain and ROM immediately following intervention in patients with a primary complaint of shoulder pain. Thoracic spine manual therapy accelerated recovery and reduced pain and disability in patients having nonspecific shoulder pain (NSSP). Thoracic and rib manipulation is effective in relieving pain and improving range of motions and reducing disability in frozen shoulder patients. Cervical thoracic junction and upper thoracic spine manipulations in combination with traditional physical therapy will decrease pain, increase range of motion, and increase function in patients suffering from internal impingement syndrome more than patients who received traditional physical therapy treatment and posterior and inferior mobilization.