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Relationship between hand function and grip force control in women with hand osteoarthritis

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. Aim

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Relationship between hand function and grip force control 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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