Abos - Hand, Wrist, &forearm:neuropathies/neural Disorders/upper Extremity:pronator Syndrome

Front 1

What nerve is involved with pronator syndrome?

Back 1

Median nerve

Front 2

In the forearm, what is the course of the median nerve?

Back 2

Between the two pronator heads
Between the FDS and FDP

Front 3

What are the possible sites of compression?

Back 3

Supracondylar process-ligament of Struthers (seen in 1% of patients)
Lacertus fibrosus
Heads of pronator teres .
Origin of FDS

Front 4

In what percentage of the population is a supracondylar process present?

Back 4

1%

Front 5

What ligament is associated with a supracondylar process?

Back 5

Ligament of Struthers

Front 6

What structures may be compressed by a supracondylar process?

Back 6

Median nerve
Ulnar newe
Brachial artery (forearm claudication symptoms)

Front 7

How can pronator syndrome be differentiated from carpel tunnel syndrome (CTS)?

Back 7

Pronator syndrome also affects the palmar cutaneous branch of the median nerve resulting in numbness in palm (spared with CTS)

Front 8

Are the superficial flexors or deep flexors affected by pronator syndrome?

Back 8

Superficial flexors (except flexor carpi ulnaris [FCU])