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Updated: Dec 31, 2025

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Obstetric Brachial Plexus Palsy: Can a Unilateral Birth Onset Peripheral Injury Significantly Affect Brain

Egmar Longo1, Ryota Nishiyori2, Theresa Cruz3

  • 1Federal University of Rio Grande do Norte/Faculty of Health Sciences of Trairi - UFRN/FACISA, Health of Children , Santa Cruz, Brazil.

Developmental Neurorehabilitation
|January 8, 2020
PubMed

Insights

Children with Obstetric Brachial Plexus Palsy (OBPP) show altered brain structure and increased cortical activity, suggesting brain reorganization relevant to rehabilitation.

Area of Science:

  • Neuroscience
  • Developmental Pediatrics
  • Rehabilitation Medicine

Background:

  • Obstetric Brachial Plexus Palsy (OBPP) results from birth-related nerve injuries.
  • Understanding OBPP's impact on early brain development is crucial for effective intervention.

Purpose of the Study:

  • To investigate brain structure and function in OBPP.
  • To correlate neuroimaging findings with clinical outcomes in affected children.

Main Methods:

  • Structural MRI scans were performed on 9 OBPP patients and 7 controls.
  • Upper-limb function and functional near-infrared spectroscopy (fNIRS) during motor tasks were assessed in the OBPP group.

Main Results:

  • OBPP patients exhibited reduced primary motor area volume in both hemispheres.
  • Greater asymmetry in the primary somatosensory area correlated with poorer upper-limb function scores (ABILHAND-Kids).
  • fNIRS showed increased bilateral cortical activity during affected arm movements, indicating potential brain reorganization.

Conclusions:

  • Structural brain differences and asymmetry in motor and sensory regions are present in OBPP and linked to clinical outcomes.
  • Widespread cortical activation suggests compensatory mechanisms and highlights the importance of neuroplasticity in OBPP rehabilitation.

Keywords:
MRIOBPPfNIRSplasticity

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