Middle MCP flexion isometric
Resisted isometric flexion at the middle MCP (blocked)
Goal
Targets middle-ray intrinsic–extrinsic balance with minimal tendon excursion.
Motion taxonomy (reference)
Also called: RIM · middle MCP iso
Best for
- Ray-specific strengthening
- Grip return after cast
Default dose
6 reps • 2 sets • 5s hold • 2×/day
Avoid when
- Boxer's fracture without clearance
- Acute sagittal band injury
Measurement targets
- Reps before form loss
Setup
- Support the forearm; middle MCP comfortably flexed.
Steps
- 1Block the middle proximal phalanx with the opposite hand.
- 2Attempt MCP flexion into the block with no visible motion.
- 3Relax completely between reps.
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
- Add one rep per set weekly if tolerated.
Regressions
- Shorter ramp time to peak effort.
Used in(2 guided demos)
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 · 2×/day
None required — table or bodyweight only.
Phases 2, 3, 4
Generally lower load — still respect pain and swelling.
Avoid if this sounds like you
Boxer's fracture without clearance
Acute sagittal band injury
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.
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.