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Supinator Reflex

Aka: Supinator Reflex, Supinator Sign, Inverted Brachioradialis Reflex
  1. Technique
    1. Perform Brachioradialis Reflex
      1. Strike reflex hammer at distal radius overlying radial styloid process region
      2. Observe for flexion at elbow (normal) and fingers (abnormal)
  2. Findings
    1. Normal
      1. Normal Brachioradialis Reflex results in brachioradialis contraction and elbow flexion
    2. Abnormal
      1. No brachioradialis contraction or elbow flexion
      2. Wrist and finger flexion only
  3. Causes
    1. Typically due to C5-C6 spinal cord lesion
    2. Associated with an absent Biceps Reflex and hyperreflexia at the triceps
  4. References
    1. Kane (2020) Am Fam Physician 102(12): 740-50 [PubMed]

Supinator reflex (C0422909)

Concepts Finding (T033)
SnomedCT 246582006
English Radial reflex, Supinator reflex, Supinator reflex (observable entity)
Spanish reflejo supinador (entidad observable), reflejo supinador
Sources
Derived from the NIH UMLS (Unified Medical Language System)


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