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Muscles of the Forearm that Move the Hand and Fingers

Muscles of the Forearm that Move the Hand and Fingers

The muscles of the forearm that move the wrist, hand, and digits are numerous and diverse. They can be classified into two groups based on their location and function — the anterior and posterior compartment muscles.
Anterior Compartment
The anterior compartment muscles originate from the humerus. They primarily function as flexors and are also known as flexor muscles. They typically insert on the carpals, metacarpals, and phalanges. The superficial layer includes the flexor carpi radialis,...

Spinal Nerves: Plexus I

Spinal Nerves: Plexus I

Nerve plexuses are networks of interlacing nerves that serve as communication hubs to distribute and organize nerve action across various body regions. The nerve plexuses are organized into the cervical plexus located in the neck region, brachial plexus in the shoulder area, lumbar plexus found in the lower back, sacral plexus situated in the pelvis, and coccygeal plexus located in the coccygeal region.
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...

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Related Experiment Video

Updated: May 12, 2026

Metacarpal Small Incision for Carpal Tunnel Syndrome

Metacarpal Small Incision for Carpal Tunnel Syndrome

Published on: April 5, 2024

Trigger finger at the carpal tunnel level: three case reports.

Fatih Parmaksızoğlu¹, Eren Cansü, Mehmet Bekir Unal

¹Department of Orthopedics and Traumatology, Yeni Yüzyıl University, İstanbul, Turkey.

Acta Orthopaedica Et Traumatologica Turcica

|April 4, 2013

Summary

Tumors in the carpal tunnel can cause trigger finger, a condition usually linked to the A1 pulley. This study highlights three cases where carpal tunnel tumors led to triggering, successfully treated with local excision.

Area of Science:

Hand surgery
Orthopedics
Tumor pathology

Background:

Trigger finger (stenosing tenosynovitis) commonly affects the A1 pulley.

Related Experiment Videos

Last Updated: May 12, 2026

Metacarpal Small Incision for Carpal Tunnel Syndrome

Metacarpal Small Incision for Carpal Tunnel Syndrome

Published on: April 5, 2024

Alternative etiologies for trigger finger are less common but documented.

Carpal tunnel tumors are rare causes of digital flexor tendon sheath issues.