Janet G. Travell, M.D. and David G. Simons, M.D.

“Strong agonist-antagonist interactions are needed between the flexors and extensors of the hand and fingers to produce forceful hand-grip. Powerful flexion of the distal phalanges requires strong activity also of the finger extensors.”
-Janet G. Travell, M.D. and David G. Simons, M.D.