title: The effect of wrist deviation on grip and pinch strength.
abstract: The effect of wrist deviation on grip and pinch strength was evaluated in 12 normal right-handed adults. Wrist positions of neutral, maximal ulnar (average, 41 degrees), and maximal radial deviation (average, 26 degrees) were held in short-arm casts while grip and key and tip pinch were measured. Wrist position was neutral with respect to flexion and extension. A highly significant effect of wrist deviation on grip strength was found (p < 0.0001). The effect on pinch strength was not statistically significant. Wrist deviation deformities arise in several clinical situations, such as radial clubhand and malunions of the distal radius. A loss of grip strength was found in radial deviation in this study. This would support 1 of the premises for surgical correction of such deviation by centralization or osteotomy.
authors.affiliation: Rancho Los Amigos Medical Center, Downey, CA, USA.
authors.forename: L
authors.initials: L
authors.lastname: Lamoreaux
authors.forename: M M
authors.initials: MM
authors.lastname: Hoffer
mesh_terms: D000328:Adult; D001696:Biomechanical Phenomena; D018737:Hand Strength / Q000502:physiology*; D006801:Humans; D008875:Middle Aged; D011187:Posture / Q000502:physiology*; D012016:Reference Values; D013223:Statistics as Topic; D014953:Wrist / Q000502:physiology*