Musculus flexor carpi radialis
The flexor carpi radialis originates from the medial epicondyle of the humerus and inserts on the proximal medial splint bone (MC2) and the cannon bone (MC3). Its primary action is to flex the carpus. It is innervated by the median nerve (roughly C8–T1). The tendon is palpable on the medial forearm and serves as a useful landmark for regional anesthesia of the forelimb. It contributes to carpal flexion during the swing phase and to overall stability of the carpus.
Origin: Medial epicondyle of the humerus
Insertion: Proximal MC2 (medial splint bone) and MC3
Action: Flexes the carpus
Innervation: Median nerve (C8-T1)
Isolated injury is uncommon. The tendon can be involved in trauma or as a landmark during diagnostic procedures. Median-nerve lesions affect it along with other flexors.
## Overview Medial forearm strain is injury to the muscles on the inside of the forearm that flex the carpus. It occurs with intense work, especially lateral movements that demand repeated carpal fle
Swelling or heat on the inside of the forearm after trauma should be evaluated. The tendon is a normal palpable structure; do not confuse it with pathology.
## Overview Medial forearm strain is injury to the muscles on the inside of the forearm that flex the carpus. It occurs with intense work, especially lateral movements that demand repeated carpal flexion. Signs include heat, swelling, pain on palpation, and lameness that may be worse on soft ground. ## Causes Overuse or acute overload. ## Diagnosis Palpation and ultrasound. ## Treatment Rest, anti-inflammatories, and controlled return to work. ## Recovery and Prognosis Good. ## Prevention Progressive training and attention to surfaces. Signs include: heat and swelling on the medial forearm; pain on palpation; lameness worse on soft ground; reluctance to flex the carpus fully
Isolated injury is uncommon. The tendon can be involved in trauma or as a landmark during diagnostic procedures. Median-nerve lesions affect it along with other flexors.
Swelling or heat on the inside of the forearm after trauma should be evaluated. The tendon is a normal palpable structure; do not confuse it with pathology.
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