Nerve compression syndromes of the forearm

what is the MOI of pronator teres syndrome, cubital tunnel syndrome, and supinator syndrome?

repetitive overuse

what is the nerve and compression sites that cause pronator teres syndrome?

median nerve which is compressed between the 2 heads of the pronator teres and the proximal edges of flexor digitorum superficialis

what are the objective findings of pronator teres syndrome?

• aggrivating factors: wrist flexion or extension and gripping

• paresthesia in median nerve distribution

• pain/weakness w pronation and gripping

• pain with AROM pronation

• positive ULTT median nerve and tinels test over the pronator teres

what is the nerve affected and compression sites for cubital tunnel syndrome?

ulnar nerve is affected with compression at the cubital tunnel (between the 2 heads of FCU) and the arcade of struthers

what are the objective findings of cubital tunnel syndrome?

• aggrivating factors: prolonged elbow flexion, pressure on elbow

• paresthesia in ulnar nerve distribution

• weakness of wrist flexion, finger abduction, and thumb adduction

• positive ULTT nerve test and tinels signs over the ulnar tunnel

what is the nerve affected and compression sites for supinator syndrome?

radial nerve with compression at that arcade of Frohse, between the tendons of ECRB and brachioradialis, and along the radius

what are the objective findings of supinator syndrome?

• aggrivating factors: prolonged elbow flexion

• lateral forearm sensory loss if proximal entrapment, but otherwise none

• wekaness of ECRB, extensor digitorum, extensor digiti minimi, extensor carpi ulnaris, abductor pollicis, extensor pollicis longus, EI, and supinator

• positive ULTT radial nerve test and tinels sign at the supinator/arcade of frohse