💪 Guyon’s Canal Syndrome — Motor Branch Compression Ulnar nerve compression at Guyon’s canal can selectively affect the motor branch, leading to: 👉 Grip weakness 👉 Atrophy of the interossei, hypothenar, and deep hyperthenar muscles 👉 Clawing of the 4th and 5th digits Recognising the pattern of muscle weakness and imbalance helps localise the lesion to the motor branch within the canal. | MSK Australia