Upgrade to remove ads
Only $35.99/year

Anatomy Hand/Exam 1

Terms in this set (34)

Carpal tunnel boundaries
Superficial border (roof): Flexor retinaculum

Deep border (floor): carpal bones

Digits affected 1-3
Carpal tunnel contents from superficial to deep
-Flexor digitorum superficialis tendons (four)
-Median nerve (laterally)
-Flexor pollicis longus tendon (laterally)
-Flexor digitorum profundus tendons (four)
Extensor expansion
The extensor tendons insert into the phalanges by way of a special connective attachment called the extensor expansion. At the distal end of the metacarpal, the extensor tendon will expand to form a hood, which covers the back and sides of the head of the metacarpal and the proximal phalanx.

When the extensor digitorum muscle contracts, it pulls on the extensor expansion and this, in turn extends the interphalangeal joints. Notice that the lumbrical muscles insert into the hood part of the expansion and through this attachment can also extend the interphalangeal joints. This muscle can at the same time flex the metacarpophalangeal joints because of these two actions.
Retinaculum
Connective tissue that holds down tendons
Ligaments to know
Ulnar collateral ligament of wrise
Dorsal radiocarpal lig.
Dorsal radioulnar lig.
Radial collateral lig of wrist

Palmar radiocarpal lig
Palmar radioulnar lig
Ulnotriquetral lig
(aka palmar ulnocarpal lig)
Lumbar plexus lies between these structures in so called ________
Lies between psoas major and quadratus lumborum in psoas compartment
Ischiofemoral ligament
Reinforces fibrous capsule posteriorly

Resists hyperextension

From ischial portion of acetabular rim to base of greater trochanter
Iliofemoral ligament
Y ligament on anterior surface. It is the largest and most important ligament

Attaches from AIIS and acetabular rim to intertrochanteric line

Reinforces fibrous capsule anteriorly to resist hyper extension and ER in standing
Inguinal ligament
...
Meaning of 1/2 LOAF
Median Nerve Mnemonic - all other hand nerves are ulnar

Lateral two lumbercals
Opponens pollicis
Abductor pollicis brevis
Flexor pollicis brevis
Thenar eminence muscles
Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis

Median nerve
Hypothenar eminence
Abductor digiti minimi
Flexor digiti minimi
Opponens digiti minimi

Ulnar nerve
Deep palmar muscles
Adductor pollicis
Lumbricals
Interossei

Ulnar, but lateral 2 lumbricals are medial
Floor and roof of carpal tunnel
Roof: Flexor retinaculum

Floor: Carpal bones
What goes through carpal tunnel
Median nerve
Flexor digitorum superficialis
Flexor digitorum profundis
Flexor pollicis longus
Sets with similar terms