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Frozen shoulder contracture syndrome (FSCS) is characterized by underhand onset, severe shoulder daily and night pain, active and passive range of motion (ROM) limitation, disturbing sleep, and shoulder-related disability. FSCS has a cryptogenetics etiology and is more prevalent in people with diabetes, autoimmune and thyroid disease, with higher prevalence in the age range between 50 and 60. Notably no deal is about higher incidence in people with physically low activity and female sex. Moreover, although some patients report complete symptom recovery, others report residual motion impairments and pain. Research on prognostic factors was applied on FSCS, and Eljabu et colleagues (2016) stated that diabetes, comorbidities, bilateral presentation and onset higher pain and disability are negative prognostic factors that could direct patient to early surgery; however, little is known about the prognostic influence of psychological factors in FSCS patients. On the other hand, in other shoulder pathologies, the presence of psychological factors is well documented, and evidence confirms that some of these features could represent prognostic factors that impact the prognosis. A recent systematic review reported that psychological factors were associated with increased pain perception and decreased function and quality of life at baseline in patients with FSCS, and pain-beliefs seem to be associated with a worst perception of arm function; however, little is known about the prognostic value of such factors in FSCS recovery. Knowing about the presence and the role of all types of prognostic factors is important because they can aid treatment and lifestyle decisions, improving individual risk prediction, providing novel targets for new treatments, and enhancing collaboration between different professionals. This study aims to determine if pain, function, disability, quality of life, ROM and time for recovery were influenced by psychological factors in FSCS patients AIMS primary aim: To determine if decreasing SPADI total > 40 points at 3 months is influenced by psychological factors such as Pain Catastrophizing, Pain Self Efficacy, Depression and Anxiety, Pain Beliefs, Fear Avoidance Beliefs, psychological well-being, Sleep Quality, self-perception of Optimism, Pessimism, motivation in receiving conservative treatment, expectation regarding the success of conservative treatment in patients with FSCS. Secondary aims: To determine if pain, function, disability, quality of life, ROM and time for recovery were influenced by psychological factors as Kinesiophobia, Pain Catastrophization, Pain Self Efficacy, Depression and Anxiety, Pain Beliefs, Fear Avoidance Beliefs, subjective psychological well-being, Sleep Quality, self-perception of Optimism, Pessimism, motivation in conservative treatment, expectation regarding the success of conservative treatment in patients with FSCS at 3 and 6 months follow up. To determine if the scores reported on psychological factors outcome measures will change in the period of interest.

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Frozen shoulder is a common shoulder concern with a prevalence of 2-5 per cent in the general population that affects the shoulder joint between the ages of 40 and 60, mostly in female subjects, manifesting in progressive loss of glenohumeral movements associated with intense pain. The pathological process consists of a fibroproliferative tissue fibrosis and an inflammation of the synovial membrane. Although the pathophysiology of this condition has been deeply studied, the mechanisms underpinning remain poorly understood. Frozen shoulder manifests clinically as shoulder pain with progressive restricted movement, both active and passive, in the absence of trauma, along with normal radiographic scans of the glenohumeral joint. It classically progresses through 3 overlapping stages of pain (stage 1, lasting 2-9 months), stiffness (stage 2, lasting 4-12 months) and recovery (stage 3, lasting 5-24 months); however, up to day seems that pain-predominant and stiff-predominant phases could be more usefull in treatment modality choice and managing. The medical management has not been defined with a wide spectrum of operative and nonoperative treatments available. The most widely used treatments are local steroid and/or anesthetic injections, stretching, active and passive mobilization, physiotherapy, hydrodistension, capsular release; hoverver, he goals of the treatment are pain management, shoulder function restoration and improvement in quality of life. Based on the best available evidence it appears that the use of corticosteroid injections plus physiotherapy has been associated with better outcomes above all in terms of early benefit in ER ROM with clinical significance as long as 6 weeks of treatments. Nevertheless, it remains unclear which parameters influence the prognosis of the pathology. So that, the aim of this study was to investigate whether a range of motion superior to 90 degree forward flexion in scapular plane, External Rotation (ER) at arm by side ( lower than 30 per cent, between 30 and 60 per cent, 90 per cent or more than contralateral side) and abduction ( lower than 30 per cent, between 30 and 60 per cent, 90 per cent or more than contralateral side) at baseline would predict best treatment outcome as measured by SPADI, NRS for Pain (night, at rest and in activity) and change in ROM in patients diagnosed with frozen shoulder

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