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Anterior Interosseous Nerve Pinch Test

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Anterior Interosseous Nerve Pinch Test
Abnormal pinch grip in the right hand[1]
Illustration of AIN syndrome due to paresis of flexor digitorum profundus, flexor pollicis longus[2]
  • Pinch Grip Strength Test
  • Pinch Test
  • Pinch Grip Test
  • AIN Pinch Test
  • OK Sign Test (Anterior Interosseous Nerve)
  • Anterior Interosseous Nerve OK Sign
  • Pinch Grip Test (AIN)
  • Tip-to-Tip Pinch Test
  • Precision Pinch Test (AIN)

Purpose

Description

  • Patient is seated or standing
  • Have patient pinch tip of index finger and thumb together
  • Examiner applies muscle resistance while patient resists with pinched fingers
  • Positive Test:
    • Weakness, poor resistance
    • Inability to maintain a round "O"

Pathology

Evidence

  • Unknown

See Also

References

  1. ↑ Jain, Mantu, et al. "Kiloh-Nevin syndrome associated with humeral shaft fracture." Case Reports 2018 (2018): bcr-2018.
  2. ↑ Image courtesy of jcphysiotherapy.com
Created by:
John Kiel on 9 September 2019 23:47:09
Authors:
Last edited:
3 May 2026 21:16:59
Categories:
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