| clasp-knife spasticity | Initial increased resistance to stretch of the extensor muscles of a joint that give way rather suddenly allowing the joint then to be easily flexed; the rigidity is due to an exaggeration of the stretch reflex. See: lengthening reaction. Synonym: clasp-knife effect, clasp-knife rigidity. (05 Mar 2000) |
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| continuous clasp | A metal bar, usually resting on lingual surfaces of teeth, to aid in their stabilization and to act as indirect retainer's. Synonym: continuous clasp. (05 Mar 2000) |
| extended clasp | A clasp that extends from its minor connector along the lingual and/or facial surface of two or more teeth. (05 Mar 2000) |