We analyzed the adaptability of human thumb and index finger movement kinematics and dynamics to variations of precision grip aperture and movement velocity. Six subjects performed precision grip opening and closing movements under different conditions of movement velocity and movement aperture (thumb and index finger tip-to-tip distance). Angular motion of the thumb and index finger joints was...

OBJECTIVES To conduct a prospective study to determine which digits are affected (and whether the thumb is spared or not) in a cohort of patients with RP as assessed by symptoms and thermography and to determine whether the degree of thumb involvement differs between primary (PRP) and secondary Raynaud's phenomenon (SRP). METHODS This was a cross-sectional study of 44 patients with RP. The fo...

BACKGROUND Identifying highly sensitive and reliable neurological exam components are crucial in recognizing clinical deficiencies. This study aimed to investigate finger tapping performance differences between patients with CNS demyelinating lesions and healthy control subjects. METHODS Twenty-three patients with multiple sclerosis or clinically isolated syndrome with infratentorial and/or c...

DESCRIPTION A 28-year-old man presents 5 months after a table saw crush injury to the thumb and the index finger of the right hand. Initially, he required thumb interphalangeal joint arthrodesis and ray amputation of the index finger. Postoperatively, the patient noted scarring and gradual contracture of the first web space causing pain with movement and significant restriction in the hand func...

In traumatic amputations in the upper extremities, replantation has been commonly attempted with high success rates. However, successful implies both maintenance of length and good functional outcomes restored hand. Since thumb accounts for 40% to 50% hand function, utmost priority is on salvage thumb. cases when not feasible, various efforts have made replace thumb, including pollicization ind...

Audiovisual perception and imitation are essential for musical learning and skill acquisition. We compared professional pianists to musically naive controls with fMRI while observing piano playing finger-hand movements and serial finger-thumb opposition movements both with and without synchronous piano sound. Pianists showed stronger activations within a fronto-parieto-temporal network while ob...