Three-jaw chuck pinch
Tripod (three-point) pinch
Goal
Tripod pinch supports writing and most precision tool use.
Motion taxonomy (reference)
Also called: pen grip · thumb to each finger putty · tripod pinch
Muscles — first dorsal interosseous, interossei, lumbricals, opponens pollicis, thenar muscles, thumb adductors
Tendons — thumb flexor/abductor tendons, thumb opposition tendons
Bones / joints — finger joints, index and middle phalanges, MCP joints, thumb CMC, thumb CMC/MCP/IP, thumb MCP
Indexed benefits: improves pencil grip · improves thumb opposition · strengthens functional pinch · strengthens pinch · supports handwriting · supports precision release
Common contexts: buttoning and tool use · pinch strength · precision manipulation · thumb rehab · tool handling · writing
Best for
- Pen grip
- Holding small tools
Default dose
10 reps • 2 sets • 3×/week
Equipment
Therapy putty
Avoid when
- Acute thumb pain
Measurement targets
- Reps to fatigue
Setup
- Hold putty between thumb, index, and middle fingertip.
Steps
- 1Pinch the putty.
- 2Release.
Cues
- All three pads share the load.
Common mistakes
- Index doing all the work.
Stop if you feel
Stop rules
- Sharp pain (≥ 4/10)
- Increasing swelling during or after
- New or worsening numbness or tingling
- Color change in fingers (pale, blue, red)
- Wound opens, drains, or feels hot
- Next morning is worse than the day before
Progressions
- Firmer putty; longer holds.
Regressions
- Less resistance.
What to do next — not a dead end
Suggestions use body region, goal, motion type, and allowed phases — not your medical record. After surgery or a flare, follow your clinician first.
Short sets — often 2×10 as a micro-session
10 reps · 2 sets
Therapy putty
Phases 3, 4, 5
Higher load or coordination — scale range and speed.
Where this shows up clinically
How phases map to healingNext best movements
Later phase or richer progression when you are ready.
Prerequisite / gentler lane
Same region and intent — usually earlier phase or lower risk.
Commonly paired with
Different primary goal, same region — typical mixed sessions.
Related movements
Similar mechanics, goals, or anatomy.
- Tip pinchstrength · moderate risk
- Key pinchstrength · moderate risk
- Pad-to-side pinchstrength · moderate risk
- Flat pinch (lateral pinch plate)strength · moderate risk
- Duckbill gripstrength · moderate risk
- Mass gripstrength · moderate risk
- Thumb isometric into fingerstrength
- Towel wringingstrength · moderate risk
Keep momentum without overdoing it
Log a short check-in to protect your streak — even one quality set counts.