Postural Decoding for Post-Stroke Shoulder Pain: A RCT.

Section 1: Introduction to Postural Decryption Technique (PDT)

Background and Development:

The Postural Decryption Technique (PDT) was co-developed by Professor Won Sang-Hee from South Korea and Professor Wang Qiang from the Rehabilitation Medicine Department of the Affiliated Hospital of Qingdao University. This innovative rehabilitation approach integrates biomechanical assessments with precise interventions to correct joint alignment, restore muscle function, and retrain movement patterns.

Professor Wang Qiang has dedicated years to applying PDT for the treatment of shoulder joint adhesions and gait dysfunctions in patients with hemiplegic shoulder pain (HSP) after stroke. His work has demonstrated remarkable clinical efficacy and laid a solid foundation for the broader application of this technique in rehabilitation medicine.

Core Principles and Technical Framework:

PDT emphasizes the importance of postural alignment and joint stability in rehabilitation. It is based on the 4R Core Technique, which includes:

• Reposition - Correcting abnormal joint alignments to restore normal positioning and stability.
• Restore - Releasing soft tissue adhesions to improve muscle elasticity and flexibility.
• Reinforce - Strengthening key muscle groups and enhancing neuromuscular control.
• Retrain - Re-educating patients in functional movements to maintain proper posture and prevent recurrence.

Features and Advantages:

• Addresses Root Causes: Unlike conventional treatments that focus on symptom relief, PDT targets the biomechanical imbalances that lead to pain and dysfunction.
• Personalized Approach: Treatment plans are customized based on individual postural assessments and functional limitations, ensuring optimal outcomes.

Non-Invasive Therapy: PDT is safe, painless, and well-tolerated, making it suitable for long-term application.

• Broad Applicability: Beyond treating HSP, PDT has shown positive results in managing chronic pain, gait impairments, and spinal deformities such as scoliosis.

Section 2: Study Design

Study Framework:

This study adopts a randomized controlled trial (RCT) design to evaluate the clinical efficacy and safety of PDT in treating HSP. It also compares PDT with traditional massage therapy to determine the superior approach.

Participants:

A total of 48 eligible participants diagnosed with HSP will be randomly assigned into two groups:

PDT Group (Treatment Group): Participants will undergo therapy using the Postural Decryption Technique.

Traditional Massage Group (Control Group): Participants will receive standard massage therapy.

Intervention Methods:

Postural Decryption Technique (PDT Group):

Evaluation: Analyze scapular alignment, thoracic posture, and joint biomechanics to identify dysfunctions.

4R Protocol: Apply repositioning, soft tissue release, muscle reinforcement, and movement retraining.

Focus Areas:

Joint Mobilization: Sliding and stretching of the glenohumeral joint to improve range of motion.

Muscle Relaxation: Release tight muscles (e.g., pectoralis minor, serratus anterior).

Scapular Stabilization: Proprioception exercises to enhance balance and neuromuscular control.

Functional Retraining: Teach proper movement patterns to maintain postural alignment.

Traditional Massage Therapy (Control Group):

Soft tissue relaxation techniques (kneading, pressing). Passive joint mobilization for improved flexibility. Pain relief methods, such as acupressure and trigger point therapy.

Treatment Duration:

5 sessions per week, 40 minutes per session, for 4 weeks. Adjustments to intensity and methods will be made based on participant progress.

Outcome Assessments:

Primary Outcomes:

Pain Relief (VAS): Visual Analog Scale (0-10) to measure pain intensity. Range of Motion (ROM): Goniometer to assess flexion, abduction, and extension angles.

Secondary Outcomes:

Functional Independence (Barthel Index): Measures daily activity performance, scored 0-100.

Postural Symmetry: Vertical distance between scapular angles and the second thoracic vertebra, evaluated for alignment improvement.

Musculoskeletal Ultrasound: Tracks changes in muscle structure, tendon thickness, and joint effusion.

Safety Monitoring:

Record adverse events, such as increased pain, swelling, or loss of function. Allow participants to withdraw at any stage if discomfort occurs.

Inclusion criteria

• Meets the diagnostic criteria for stroke.
• Presence of stroke-related lesions confirmed by cranial CT or MRI.
• Hemiplegic shoulder pain and motor dysfunction on the affected side.
• Shoulder pain occurring after paralysis, with a VAS score ≥ 5.
• ≥ 18 years.
• First-ever stroke, presenting with unilateral limb paralysis, and classified
• between Stages II-V based on Brunnstrom motor function recovery stages.
• No severe cognitive impairment, with normal cognitive function assessment. Signed informed consent form.

Exclusion criteria

• Subarachnoid hemorrhage.
• History of two or more strokes.
• Shoulder subluxation in the flaccid stage.
• Disease progression with new infarction or hemorrhagic lesions.
• Severe cardiopulmonary diseases, including acute myocardial infarction, unstable angina, myocardial ischemia detected on resting ECG, severe arrhythmias, aortic stenosis, acute pericarditis, or malignant hypertension.
• Shoulder pain caused by cervical spondylosis, periarthritis, sports injuries, gallbladder disease, thalamic lesions, or myocardial infarction.
• Severe psychological or cognitive impairments that prevent cooperation with treatment.