What I mean by “dyad compression” Compression = two segments behaving like one unit under load. Common dyads: forearm ↔ wrist, wrist ↔ hand, hand ↔ tool/ball. When the dyad stays “stuck,” the system loses room for glide.
Why “carpal tunnel” can show up Repeated grip + fixed wrist/forearm strategies can increase pressure. Less “give” in the system can mean more friction and irritation over time. The label matters less than the pattern: repetition + compression.
Repetitive anti-rotation as a possible driver “Anti-rotation” here = preventing rotation (staying square) by stiffening through the forearm/wrist/hand while doing repetitive tasks. Stiffening makes forearm + wrist act like one locked unit. Precision tasks still demand output → grip pressure rises. Over time: less glide, more friction, more sensitivity.
Bowling: a real-world anti-rotation trap The ball’s weight encourages constant gripping under load. Accuracy often comes from suppressing rotation late in the swing/release. The wrist may stay in extension + deviation to “guide” the ball. Result: forearm ↔ wrist ↔ hand becomes a compressed dyad.
Signals worth noticing Tingling/numbness/weakness, especially with long bouts of repetition. Forearm tightness that seems to “pull” into the wrist/hand. Symptoms worse when you rely on stiffness for accuracy.
Pattern audit (quick checks) Bowling: do you lock rotation to guide the ball at release? Bowling: does grip pressure spike late in the swing? Mouse: do you steer from the wrist instead of repositioning the forearm? Training: do you “brace” the wrist to stop rotation under load?
