open kinetic chain
Exercise pattern where the distal segment moves freely in space without fixed resistance.
Full Definition
Open kinetic chain exercises involve movement patterns where the terminal segment (hand or foot) is not fixed and can move freely through space. These exercises typically isolate specific muscle groups and joints, making them valuable for targeting particular deficits in rehabilitation. Common examples include leg extensions, bicep curls, and shoulder flexion exercises performed in supine position. While beneficial for isolated strengthening and early-phase rehabilitation, open chain exercises may not fully replicate functional movement patterns that occur during daily activities, where multiple joints work in coordination.
Usage
Usage note: Hyphenate when used as compound modifier before noun. Contrast explicitly with closed kinetic chain in clinical writing.
In Context
- "Open kinetic chain exercises were initiated to address specific quadriceps weakness without weight-bearing stress." — Treatment plan
- "The program transitioned from open to closed kinetic chain exercises as healing progressed." — Discharge summary