Hand of Benediction Explained | High Median Nerve Injury | Anatomy & Clinical Correlation

0:00 – Introduction

0:15 – What is the gesture of benediction?

0:35 – What is hand of benediction?

0:58 – How does a normal hand make a fist?

1:12 – What happens in hand of benediction?

1:24 – Which muscles normally flex the fingers?

2:19 – What happens in high median nerve injury?

3:29 – Recap: What is hand of benediction?

3:48 – Line diagram of the median nerve

4:28 – Conditions that can produce hand of benediction
This short video explains the Hand of Benediction, a classical clinical sign seen in high median nerve injury.

The video begins by introducing the gesture of benediction, commonly used by priests while blessing the congregation, and compares it with the pathological hand posture.

Viewers are taken through the normal mechanism of finger flexion, highlighting the role of flexor digitorum superficialis and flexor digitorum profundus.

The nerve supply of flexor digitorum profundus is explained in detail, emphasizing how the lateral two tendons are supplied by the median nerve and the medial two by the ulnar nerve.

The video clearly demonstrates how a high median nerve injury results in paralysis of flexor digitorum superficialis and the lateral half of flexor digitorum profundus.

This explains why the index and middle fingers fail to flex, while the ring and little fingers flex normally, producing the Hand of Benediction during attempted fist formation.

Line diagrams of the median nerve are used to localize the level of injury responsible for this deformity.

Common causes of high median nerve injury leading to Hand of Benediction are briefly discussed.

This video is ideal for MBBS students, orthopedics and surgery residents, as well as students of dentistry, physiotherapy, and nursing.
Reference Videos:

• Carpal Tunnel Syndrome — Anatomy
https://youtu.be/EC3FtzjzH7o?si=wDj2YZ7yWmBWqCDH

• Cubital Fossa — Anatomy, Boundaries & Clinical Significance
https://www.youtube.com/watch?v=DOJbSGfTpDE

• Quadrangular & Triangular Spaces — Anatomy and Clinical Relevance
https://www.youtube.com/watch?v=DOJbSGfTpDE

• Shoulder Joint Anatomy — How to Draw (Sketch & Recall Series)
https://youtu.be/h-ZC_wMIzmI?si=npgW04z7ZfaTmQFQ

• Shoulder Joint Relations — Detailed Drawing (Sketch & Recall Series)
https://youtu.be/BJbeGIEEyz8?si=XT13ntAdEQGa2COk

• Pectoral Region — Anatomy and Clinical Insights
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