Inferior Trunk of the Brachial Plexus

Authors

Affiliations

Nathaniel Yomogida, B.S., SPT

Doctor of Physical Therapy

B.S. in Kinesiology

Chloë Kerstein, B.S., SPT

Doctor of Physical Therapy

B.A. in Neuroscience

Origin

The inferior trunk originates from nerve roots C8 and T1.

Function

• 4th-5th fingers of hand¹
• Motor innervation to intrinsic hand muscles¹

Dysfunction

The inferior trunk is the most COMMONLY compressed neural structure in TOS¹

References

1.

Dutton M. Dutton’s Orthopaedic Examination, Evaluation, and Intervention. 5th ed. McGraw Hill Education; 2020.