Rheumatoid arthritis (RA) frequently affects the hand and wrist, resulting in pain, reduced joint stability, impaired proprioception, muscle weakness, and limitations in daily activities. Although conventional rehabilitation primarily focuses on range of motion and strengthening exercises, sensorimotor impairments such as proprioceptive deficits are often underaddressed. The SMART-HAND (Sensory, Massage, Approximation, ROM, Training = Strengthening + Perturbation) protocol was developed as a structured, mechanism-based rehabilitation program to improve proprioception, joint stability, motor control, and hand function. This randomized controlled trial aims to evaluate the effectiveness of the SMART-HAND protocol in individuals with RA by comparing its effects on hand function, proprioception, pain, dexterity, muscle strength, and functional performance with conventional rehabilitation and a control group.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
132
The SMART-HAND Protocol is a supervised, mechanism-based hand rehabilitation program administered twice weekly for 12 weeks (24 sessions, 50 minutes per session). The protocol consists of sensory training, massage, joint approximation, range of motion exercises, stretching, strengthening exercises, and perturbation-based stabilization training. Exercise progression is individualized according to participants' tolerance using the Borg Rating of Perceived Exertion scale and progressive resistance. The intervention is designed to improve proprioception, sensorimotor control, joint stability, muscle strength, and hand function.
Participants will receive a supervised conventional hand rehabilitation program twice weekly for 12 weeks (24 sessions, 50 minutes per session). The program includes range of motion, stretching, and strengthening exercises. Exercise intensity and progression will be individualized according to participants' tolerance using the Borg Rating of Perceived Exertion scale and progressive resistance.
Participants will receive a single face-to-face education session lasting approximately 20-30 minutes. The education will include information on joint protection techniques, ergonomic principles, energy conservation, and recommendations for performing activities of daily living. Participants will continue their routine medical care throughout the study but will not receive a supervised exercise program.
Michigan Hand Outcomes Questionnaire (MHQ)
The Michigan Hand Outcomes Questionnaire (MHQ) will be used to assess hand function, activities of daily living, pain, work performance, aesthetics, and patient satisfaction. The primary endpoint is the change in the total MHQ score from baseline to Week 12.
Time frame: Baseline, Week 4, Week 8, and Week 12 (Primary endpoint: change from baseline to Week 12)
Joint Position Sense (Proprioception)
Wrist, metacarpophalangeal (MCP), and proximal interphalangeal (PIP) joint proprioception will be assessed using a joint position reproduction test with a goniometer. The mean absolute repositioning error from three trials will be recorded.
Time frame: Baseline, Week 4, Week 8, and Week 12
Nine-Hole Peg Test
Hand dexterity will be assessed using the Nine-Hole Peg Test. The average completion time of two trials for each hand will be recorded in seconds.
Time frame: Baseline, Week 4, Week 8, and Week 12
Duruöz Hand Index
Hand functional disability will be evaluated using the Duruöz Hand Index. Higher scores indicate greater disability.
Time frame: Baseline, Week 4, Week 8, and Week 12
Pain Intensity
Pain intensity during rest, activity, and night will be assessed using a 10-cm Visual Analog Scale (VAS). Higher scores indicate greater pain.
Time frame: Baseline, Week 4, Week 8, and Week 12
Sensory Threshold
Cutaneous sensory threshold will be evaluated using Semmes-Weinstein monofilaments. The thinnest monofilament perceived by the participant will be recorded.
Time frame: Baseline, Week 4, Week 8, and Week 12
Grip Strength
Maximum hand grip strength will be measured using a Jamar dynamometer. The average of three maximal contractions will be recorded in kilograms.
Time frame: Baseline, Week 4, Week 8, and Week 12
Pinch Strength
Lateral pinch and three-jaw chuck pinch strength will be measured using a Baseline pinch gauge. The average of three trials will be recorded in kilograms-force.
Time frame: Baseline, Week 4, Week 8, and Week 12
Range of Motion
Active range of motion of the wrist and finger joints will be measured using standard goniometers and recorded in degrees.
Time frame: Baseline, Week 4, Week 8, and Week 12
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