Comparative Effects of Niel Asher Technique and Bowen Technique on Pain, Range of Motion and Functional Disability in Patients With Adhesive Capsulitis.

The research synopsis entitled "Comparative Effects of Niel-Asher Technique and Bowen Technique on Pain, Range of Motion and Functional Disability in Adhesive Capsulitis" aims to evaluate and compare the effectiveness of two manual therapy approaches in the management of adhesive capsulitis. Adhesive capsulitis is a common musculoskeletal disorder characterized by progressive pain and stiffness of the shoulder joint, leading to marked restriction in both active and passive movements. The condition develops due to inflammation, fibrosis, and contracture of the glenohumeral joint capsule and surrounding periarticular structures. It predominantly affects individuals between the ages of 40 and 60 years and significantly limits functional independence and quality of life. Patients often experience difficulty performing routine activities such as dressing, combing hair, lifting objects, and reaching overhead. Although adhesive capsulitis generally follows a self-limiting course, recovery may take several months or even years, making effective conservative treatment essential. The synopsis explains that adhesive capsulitis progresses through four clinical stages: the painful phase, freezing phase, frozen phase, and thawing phase. The painful phase is characterized by gradually increasing pain with minimal movement restriction. During the freezing stage, pain intensifies while shoulder mobility progressively decreases. The frozen stage presents with significant stiffness and reduced pain, whereas the thawing stage involves gradual restoration of shoulder movement. The disorder may be primary (idiopathic) or secondary to underlying conditions such as diabetes mellitus, thyroid disease, rotator cuff pathology, cardiac disorders, or neurological conditions. Because the exact cause remains uncertain, treatment primarily focuses on symptom relief and restoration of function. Conservative physiotherapy remains the first-line treatment for adhesive capsulitis worldwide. Available interventions include electrotherapy, therapeutic exercises, manual therapy, stretching, joint mobilization, and rehabilitation programs. Despite the wide range of treatment options, there is still no universally accepted gold-standard intervention. This lack of consensus has encouraged researchers to investigate newer manual therapy techniques that may produce superior clinical outcomes. One intervention investigated in this study is the Niel-Asher Technique (NAT), developed by Simeon Niel-Asher in 1999. NAT is a structured five-step manual therapy protocol specifically designed to manage adhesive capsulitis. The technique combines deep stroking massage with ischemic trigger-point compression to treat muscles and periarticular tissues surrounding the shoulder, including the deltoid, biceps, rotator cuff muscles, and upper trapezius. After completing the five treatment steps, active shoulder rotations are performed. The proposed mechanism of NAT is based on Cortico-Neurosomatic Programming (CNSP), which suggests that manual stimulation activates mechanoreceptors, improves cortical body mapping, normalizes muscle tone, reduces sympathetic nervous system activity, decreases pain perception, and restores normal movement patterns. Previous studies cited in the synopsis indicate that NAT significantly improves shoulder pain, range of motion, and functional recovery in patients with adhesive capsulitis. The second intervention is the Bowen Technique (Bowtech), developed by Australian therapist Tom Bowen. This therapy involves gentle rolling movements over muscles, fascia, tendons, and ligaments, combined with therapeutic pauses between movements to allow neuromuscular adaptation. The technique targets structures around the shoulder, including the deltoid, supraspinatus, infraspinatus, subscapularis, and upper trapezius muscles. Bowen therapy is believed to work through fascial mechanotransduction, proprioceptive stimulation, and autonomic nervous system regulation. Gentle stimulation activates muscle spindles, Golgi tendon organs, and fascial mechanoreceptors, reducing muscle tension and promoting tissue relaxation. Research cited in the synopsis suggests that Bowen Technique effectively reduces pain, improves mobility, enhances functional status, and provides a safe, non-invasive complementary treatment for frozen shoulder. The primary objective of the study is to compare the effects of Niel-Asher Technique and Bowen Technique on three important clinical outcomes: pain, shoulder range of motion, and functional disability. Accordingly, three alternate hypotheses propose that significant differences will exist between the two interventions regarding pain reduction, improvement in shoulder mobility, and reduction in disability. Corresponding null hypotheses state that no statistically significant differences will exist between the interventions. Methodologically, the research is designed as a single-blind randomized clinical trial conducted at Fauji Foundation Hospital, Rawalpindi, over one year. A total sample of 54 participants will be recruited through purposive sampling, including an additional 10% to compensate for anticipated attrition. Eligible participants will be adults aged 40-60 years diagnosed with unilateral primary adhesive capsulitis in the frozen stage, experiencing moderate pain and restricted shoulder movements for more than six months. Participants with recent shoulder surgery, corticosteroid injections, neurological disorders, uncontrolled diabetes, fractures, or other serious shoulder pathologies will be excluded. Random allocation into two treatment groups will be achieved using a simple coin toss, while the outcome assessor will remain blinded to group allocation. Outcome assessment will include three validated measurement tools. Pain intensity will be measured using the Numeric Pain Rating Scale (NPRS), where participants rate pain from 0 (no pain) to 10 (worst imaginable pain). Functional disability will be evaluated using the Shoulder Pain and Disability Index (SPADI), a validated questionnaire assessing pain and daily functional limitations. Shoulder mobility will be objectively measured using a universal goniometer to assess flexion, abduction, internal rotation, and external rotation. Measurements will be recorded before treatment and again after four weeks of intervention. The synopsis also describes standardized procedures for measuring each shoulder movement and reports high reliability for the selected outcome measures. Both groups will receive a standardized conventional physiotherapy program consisting of hot packs, therapeutic ultrasound, Transcutaneous Electrical Nerve Stimulation (TENS), and supervised stretching and mobility exercises. In addition, Group A will receive the Niel-Asher Technique, while Group B will receive the Bowen Technique. Treatment sessions will occur three times per week for four weeks, with each session lasting approximately twenty minutes for the manual therapy component in addition to conventional treatment. Detailed treatment protocols are provided to ensure consistency and reproducibility of both interventions. In conclusion, this randomized clinical trial seeks to generate high-quality evidence comparing the effectiveness of the Niel-Asher Technique and Bowen Technique in managing adhesive capsulitis. By evaluating their impact on pain, shoulder range of motion, and functional disability, the study intends to identify the more effective manual therapy approach.