Pronation isometric brace
Resisted forearm pronation isometric with opposite hand block
Goal
Forearm RIM improves rotational stiffness before dynamic pron–sup tasks.
Motion taxonomy (reference)
Also called: RIM · pronation iso
Best for
- Pronator teres / quadratus dosing
- Tool-use prep
Default dose
6 reps • 2 sets • 5s hold • 3×/week
Avoid when
- Distal radioulnar joint instability
- Acute proximal forearm fracture
Measurement targets
- Hold seconds
- Effort %
Setup
- Elbow bent ~90° tucked to the ribs; neutral wrist.
- Grasp the working forearm with the opposite hand ready to resist rotation.
Steps
- 1Attempt to pronate while the other arm blocks any motion.
- 2Hold submaximal torque.
- 3Relax and repeat.
Cues
- Torque from the forearm, not the fingers.
- No wrist cocking.
Common mistakes
- Letting the elbow drift away from the trunk.
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
- Light band pronation after isometrics are easy.
Regressions
- Shorter lever by moving block closer to elbow.
Used in
Search the exercise library with this motion's clinical label for additional guided drills that may match your plan.
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.
~1 min if held as written
6 reps · 2 sets · 5s hold
None required — table or bodyweight only.
Phases 3, 4, 5
Higher load or coordination — scale range and speed.
Avoid if this sounds like you
Distal radioulnar joint instability
Acute proximal forearm fracture
Reread best-for context ↑Next 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.
- Supination isometric bracestrength · moderate risk
- Towel wringingstrength · moderate risk
- Wrist curl (light)strength · moderate risk
- Wall weight bearingstrength · moderate risk
- Thumb dynamic band pullsstrength · moderate risk
- Radial deviation isometric (table)strength · moderate risk
- Ulnar deviation isometric (table)strength · moderate risk
- Wrist isometricsstrength
Guided exercises that use this
Step-by-step sessions that embed this movement pattern.
Keep momentum without overdoing it
Log a short check-in to protect your streak — even one quality set counts.