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Hand Function and Grip Force Control Relationship in Women with Hand Osteoarthritis

This study aims to understand the relationship between hand function and grip force control in women with hand osteoarthritis (OA), a common joint disorder that affects manual activities. Findings indicate strong correlations between grip force control variables and hand function parameters, suggesting potential benefits of rehabilitation programs including grip force control training for improving hand dexterity in patients with hand OA.

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Hand Function and Grip Force Control Relationship in Women with Hand Osteoarthritis

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  1. Relationship between hand function and grip force control in women with hand osteoarthritis Paula Martins Nunes, PT; Diana Guimarães de Oliveira, PT; Alexander S. Aruin, PhD; Marcio José dos Santos, PT, MS, PhD

  2. Aim • Understand relationship between clinical tests of hand function and measures of grip force control in women with hand osteoarthritis (OA). • Relevance • Hand OA is most common joint disorder • Affects ~70% of people 65 and older. • Characterized by pain, stiffness, and swelling of finger joints. • Contributes to decreased grip strength and hand function, significantly limiting everyday manual activities.

  3. Methods • 10 females with hand OA and 10 age-matched nondisabled controls. • Clinical tests: • Disabilities of the Arm, Shoulder and Hand (DASH), Semmes-Weinstein Monofilament Test, visual analog scale (VAS), Moberg Pickup Test with eyes open/ (MPUT-EO/EC), maximum isometric grip force (MIGF). • Experimental procedure: • Instrumented cup equipped with force sensor and triaxial accelerometer. • Subjects lifted and placed cup on 20 cm high box 20 cm away. • Variables : • Force at moment of liftoff (FMLO), grip force peak (GFP), latency, peak velocity of instrumented object.

  4. Results • Individuals with hand OA: • Performed MPUT test slower. • Significantly lower MIGF. • Significantly higher FMLO, GFP, latency. • Correlations: • DASH: moderate positive correlation with MPUT-EC, strong correlation with VAS, strong positive correlation with latency. • MPUT-EO/EC: strong positive correlation with latency. • FMLO: strong positive correlation with DASH & MPUT-EO, moderate correlation with MPUT-EC.

  5. Conclusion • Principal result: • Strong positive correlations between grip force control variables and some hand function and dexterity parameters in patients with hand OA. • Rehabilitation programs that include grip force control training might help improve hand function and dexterity. • May prompt launch of new, larger investigations focusing on effects of grip force control on hand functionality.

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