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Reverse DIP blocking

Isolated DIP extension with PIP stabilized in flexion

MobilityFingersextensionflexionHigh riskPhases 2, 3

Goal

Selective terminal extensor recruitment with PIP flexed — useful when DIP extension is lagging but central slip concerns are ruled out by the treating clinician.

Motion taxonomy (reference)

Also called: isolated dip extension

Structures:

Muscles — extensor digitorum, terminal extensor mechanism

Tendons — extensor tendon at DIP

Bones / joints — DIP joint, distal phalanx, middle phalanx

Indexed benefits: helps tendon balance · improves DIP extension · targets DIP lag

Common contexts: DIP extension lag · distal control · mallet-type recovery when cleared

Best for

  • DIP extension lag
  • Distal joint stiffness after immobilization (cleared)

Default dose

Reps8
Frequency2× daily
Sets / time

8 reps • 2×/day

Avoid when

  • Mallet finger / acute extensor tendon injury at the DIP without clearance
  • Boutonniere pattern or central slip concern

Measurement targets

  • DIP active extension (degrees)
  • Composite vs isolated comparison

Setup

  • Stabilize the middle phalanx with the other hand so the PIP stays gently bent.

Steps

  1. 1Keeping the middle joint bent, straighten only the tip joint.
  2. 2Lower the tip slowly.

Cues

  • Small range; quality over force.
  • The middle joint should not straighten during the move.

Common mistakes

  • Straightening the whole finger together.
  • Pushing into sharp pain at the tip.

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
  • Joint clicks or new instability

Progressions

  • Add a brief 2–3 sec hold at end range when comfortable.

Regressions

  • Smaller range; fewer reps; longer rests between reps.
Continue your rehab

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.

Estimated time

~2–5 min as a focused practice block

8 reps · 2×/day

Equipment

None required — table or bodyweight only.

Rehab stage

Phases 2, 3

Higher load or coordination — scale range and speed.

When to stop

Sharp pain (≥ 4/10)

Increasing swelling during or after

Full stop rules ↑

Avoid if this sounds like you

Mallet finger / acute extensor tendon injury at the DIP without clearance

Boutonniere pattern or central slip concern

Reread best-for context ↑

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.

Scaling in plain language: Easier — Smaller range; fewer reps; longer rests between reps. · Harder — Add a brief 2–3 sec hold at end range when comfortable.Full cues ↑