Lecture 3.2

Question 1

There are __ carpal bones

___ rows, bridged by flexor retinaculum

Scaphoid is most _______

Answer 1

There are 8carpal bones

2 rows, bridged by flexor retinaculum

scaphoid is most vulnearble

Question 2

Scapohid and lunate together make contact with the ____

Answer 2

radius

Question 3

Pisiform is a sesamoid bone

what is a asesamoid bone

Answer 3

develped within a tendon

work as ball bearings

Question 4

hamate sits distal to the ________

Answer 4

pisiform

Question 5

True or False:

The piso-hamate ligament conects the pisoform and hamate

Answer 5

true

Question 6

Fracture of the hamate bone will affect the ___ nerve

Answer 6

ulnar nerve

Question 7

metacarpals are _____bones

Answer 7

long bones

Question 8

The first metacarpal is the ____

Answer 8

thumb

Question 9

Label

Answer 9

Question 10

The ________ ____ is the most superficial palmar muscle, located in the lateral side

Answer 10

The palmaris brevis is the most superficial palmar muscle, located in the lateral side

Question 11

Contracture of the plamar fascia - is the thickening and shrinking of _____ _____, typically affecting ring and ling fingers. No know aetiology but thought to be inherited

Answer 11

Contracture of the plamar fascia - is the thickening and shrinking of palmar fascia, typically affecting ring and ling fingers. No know aetiology but thought to be inherited

Question 12

The flexor retinaculum attaches to what?

Answer 12

Medial: Hook of hamate
& pisiform

Lateral: Trapezium & scaphoid

Question 13

Carpal tunnel:

Roof:

Floor:

Promial end identified by:

Contents:

Answer 13

Roof: flexor retinaculum

Floor:Carpal bones

Promial end identified by: distal wrist crease

Contents:

• Flexor tendons,
• synovial sheaths
• median nerve

Question 14

What tructures pass superficial to the carpal tunnel?

Answer 14

Polmarus longus

Ulnar artery / ulnar

superficial branch of radial artery

palmar cutaneous branch of median nerve

Question 15

consider the FDS and FDP tendons in the synovial sheaths.

Which numbers go where (imagine the corss sectional diagram)

Answer 15

Question 16

The Flexor carpi radialis lies in the ___ of the carpal tunnel

Answer 16

roof

Question 17

True or False

There is no extensor retinaculum

Answer 17

False - there is

Question 18

How many muscles are in the extensor campartment of the forearm?

How many go through the extensor retinaculum?

Answer 18

11

9 go through

(the supinator & bracial radialis dont go past the wrist)

Question 19

What are the borders of the anatomical snuff box?

what does it contain

Answer 19

Anteriorly: tendons of Abductor pollicis longus (APL) and Extensor pollicis brevis (EPB)

Posteriorly: Extensor pollicis longus

Roof: skin, subcutaneous tissue, cephalic vein, superficial branch of radial nerve

Floor: scafoid, trapezium

contents - RADIAL ARTERY

Question 20

What are the thenar (thumb) muscles?

Answer 20

abductor pollicis brevis

flexor pollicis brevis

Question 21

What are the hypothenar muscles?

Answer 21

abductor digiti minimi

flexor digiti minimi

Both arise from dges of flexor retinaculum

and insert into base of proximal phalanx

Question 22

Lumbricals arise from …

they pass to _____side of digit

Answer 22

Flexor digitorum profundus

they pass to lateral side of digit

Question 23

Lumbricals flexor the _______ joint

Answer 23

Lumbricals flexor the carpal/metacarpal joint

Question 24

The intrinsic muscle of the thenar side are:

Answer 24

opponens pollicis

adductor pollciis

Question 25

he opponens digit minimi (hypothenar muscle) allows one to do _______

Answer 25

opposition

Question 26

On the palmar side there are __ interossei muslces

On the Dorsal side there are __ interossei muscles

Answer 26

On the palmar side there are 3 interossei muslces (pull the finger together)

On the Dorsal side there are 4 interossei muscles

Question 27

The median nerve comes through the carpal tunnel then sends the recurrent branch to the _ muscles on the thenar side of the palm

Answer 27

5