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Chapter 7 - The Wrist and Hand Joints
all the bones, joints, movements, muscles and nerves! So that we can quiz ourselves...
19
Anatomy
07/24/2010

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Cards

Term

 

 

Actions of the wrist and hand joints

Definition

 

 

flexion and extension

&

abduction and adduction

Term

 

How many bones, joints muscles

(and of those are intrinsic muscles)

in the wrist and hand?

Definition

 

29 bones (including radius & ulna)

more than 25 jts.

more than 30 muscles

with 18 intrinsic muscles

Term

 

Name the 8 carpal bones in order 

(starting with the proximal bones, 

listing from radial to ulnar)

Definition

 

scaphoid, lunate, triquetrum, pisiform

trapezium, trapezoid, capitate and hamate

Term

 

What kind of shape do the carpal bones form and what runs underneath it?

(and what structures does it contain?) 

Definition

 

It forms a 3-sided concave arch on the palmar side

It protects the carpal tunnel,

which contains an artery, flexor digitorum superficialis tendon, flexor digitorum profundus tendon and the median nerve

Term

 

What carpal is most likely to be fractured

and what is the MOI?

Definition

 

Scaphoid, which can be fractured w/wrist hyperextension and FOOSH

It is often dismissed as a wrist sprain and can cause complications later with precise immobilization or surgery

Term

Match together:

-anterior

-posterior

-dorsal

-palmar

-the view that is most used

Definition

 

 

Anterior, palmar and the view that is most used

 

Posterior and dorsal

Term

 

How many metacarpals and phalanxes does the wrist and hand have?

Definition

 

5 metacarpals and 14 phalanxes

 

Each finger has 1 metacarpal

Fingers 2-5 have 3 phalanxes, the thumb has 2

The 3 phalanx types are proximal, middle and distal

Term

 

Which structure in the hand contains a sesamoid bone and what is its purpose?

Definition

 

The flexor tendon of the thumb

 

It increases the mechanical advantage of the thumb joint

sesamoid bones can also occur in the other fingers

Term

 

Where do many wrist and finger flexors originate?

Definition

 

 

The medial epicondyle and medial condyloid ridge of the humerus

Term

 

What originates at the lateral epicondyle and supracondylar ridge of the humerus?

Definition

 

The wrist and finger extensor muscles

Term

 

What are the key bony landmarks for wrist movement?

Definition

 

2nd - 5th metacarpals

pisiform

hamate

Term

 

Where do finger muscles that are involved in wrist movement usually insert?

Definition

 

 

At the base of the proximal, middle and distal phalanxes of the phalanges

Term

 

What type of joint is the wrist joint

and what are the movements associated with it?

(and where do these movements mostly take place?)

Definition

 

condyloid joint

flex., ex., ab. and ad.

 

occur between the distal radius and proximal carpal bones (scaphoid, lunate and triquetrum)

Term

 

What are the ROM values for wrist movement

(in degrees, silly...don't get out your calculator)?

Definition

 

70 - 90 flexion

65 - 85 extension

15 - 25 radial deviation (ab.)

25 - 40 ulnar deviation (ad.)

Term

 

Define the MCP joint and give it's ROM values.

Definition

 

metacarpophalangeal joint (MCP)

between the metacarpals and proximal phalanx 

condyloid joint

0 - 40 ex.

85 - 100 flex.

Term

 

Define and describe the type and ROM of the PIP joint.

Definition

 

proximal interphalangeal joint (PIP)

between the proximal and middle phalanx

ginglymus joint

90 - 120 flexion from full extension

Term

 

 

Define the DIP joint by its type, ROM and any other interesting facts.

Definition

 

Distal interphalangeal joint (DIP)

connects the middle and distal phalanx

ginglymus joint

80 - 90 flexion from full extension

can also get SOME extension but not much

Term

 

How many joints does the thumb have,

what type of joints are they

and what are each of their ROM?

Definition

 

2 joints - MCP and IP (interphalangeal)

both jts. are considered ginglymus

MCP - 40 - 90 flex. from full ex.

IP - 80 - 90 flex. from full ex.

 

also has a CMC joint (carpometacarpal) 

saddle jt.

50 - 70 ab.

15 - 40 flex.

0 - 20 ex.

Term
Definition