KINE 326: Wrist and Hand - Muscles and Movements ( Exam 5 )

- Flexion

- Extension

- Radial Deviation

- Ulnar Deviation

- Sliding

- Gliding

What are the movements of the Wrist Joint?

None

What is the movement of CMC Joint?

1st CMC

There is no significant movement in the CMC Joint, except what?

- Flexion

- Extension

- Abduction

- Adduction

What is the movement of the MP Joint?

- Flexion

- Extension

What is the movement of PIP and DIP?

- Flexion

- Extension

- Abduction

- Adduction

- Rotation

What does CMC of thumb allow?

Opposition

Movement of the thumb to touch the fingertips

Gripping and Prehension Tasks

Opposition is very important in what actions?

Concave Transverse Arch Metacarpals

What facilitates gripping?

- Flexion

- Extension

- Abduction

- Adduction

What is the movement MP of Thumb?

- Flexion

- Extension

- Abduction

- Adduction

What is the movement at MP of Fingers?

Medial Epicondyle

What is the common origin of the Flexors?

All Fingers except Thumb

What does digitorum mean?

Thumb

What does it mean when you say Pollicis?

Will cause you Radial Deviation

What does it mean when you say Radialis?

Will cause you Ulnar Deviation

What does it mean when you say Ulnaris?

Flexor Carpi Radialis

What's the name of the muscle that flexes the rest and radially deviates it?

- Flexion

- Radial Deviation

What is the action(s) of the Flexor Carpi Radialis?

Carpi

What do you say when referring to Carpal Bones not Fingers?

Extrinsic Muscles

Muscles that originate from outside the wrist - hand region but insert within the wrist/hand

Lateral and Medial Epicondyle of Humerus

What is the common origin for Extrinsic Muscles?

Not Much Movement in Elbow Joint

What movements do the Extrinsic Muscles of the Wrist and Hand create?

5

How many Anterior Extrinsic Muscles are in the Wrist?

6

how many posterior extrinsic muscles are there?

Medial Epicondyle

What is the common origin for Anterior Muscles?

Flexor Carpi Radialis

What muscle is this?

Flexor Digitorum Profundus

Which of the following is not a Common Flexor Origin?

- Flexor Carpi Ulnaris

- Flexor Carpi Radialis

- Flexor Digitorum Superficialis

- Palmaris Longus

Which of the Following are Common Flexor Origins?

Base of 2nd and 3rd Metacarpals

What is the insertion of Flexor Carpi Radialis?

- Flexion

- Radial Deviation

What is the action of this muscle

Flexor Carpi Ulnaris

What muscle is this?

- Envelops the Pisiform Bone

- Then inserts into the Hamate ( piso-hamate ligament ) and Base of 5th Metacarpal ( piso-metacarpal ligament )

What is the insertion of Flexor Carpi Ulnaris?

- Flexion

- Ulnar Deviation

What is the action of this muscle?

Flexor Digitorum Superficialis

What muscle is this?

- Split into 4 tendons

- Inserts into Base of Middle Phalanges of 4 Fingers

What is the insertion of the Flexor Digitorum Superficialis?

Flexion of Wrist, MP and PIP Joints of Four Fingers

What is the action of this muscle?

Palmaris Longus

What is this muscle?

Flexion of Wrist

What is the action of this muscle?

Flexor Retinaculum

Palmaris Longus does not pass under what?

Palmar Aponeurosis

What is the insertion of Palmaris Longus?

no

Is the palmaris longus part of the carpal tunnel?

Flexor Digitorum Profundus

What muscle is this?

Volar Surface of Shaft of Ulna

What is the origin of Flexor Digitorum Profundus?

- Divide in Four Tendons

- Passes under the carpal tunnel and insert on Distal Phalanges of 4 Fingers

What is the insertion of Flexor Digitorum Profundus?

Flexion of Wrist, MP, PIP and DIP Joints

What is the action of this muscle?

Lateral Epicondyle

What is the common origin of the Posterior Muscles?

- Extensor Carpi Radialis Brevis

- Extensor Digiti Minimi ( Proprius )

- Extensor Carpi Ulnaris

- Extensor Digitorum ( Communis )

- Extensor Carpi Radialis Longus

- Extensor Indicis

What are the Posterior Muscles?

- Extensor Carpi Radialis Longus

- Extensor Indicis

Which two muscles are not part of Common Extensor Origin?

Extensor Carpi Radialis Brevis

What muscle is this?

Dorsal Aspect of Base of 3rd Metacarpal

What is the insertion of Extensor Carpi Radialis Brevis?

- Extension

- Radial Deviation

What is the action of Extensor Carpi Radialis Brevis?

Extensor Carpi Radialis Longus

What muscle is this?

Lateral Aspect of Base of Second Metacarpal

What is the insertion of Extensor Carpi Radialis Longus?

- Extension

- Radial Deviation of Wrist

What is the action of the Extensor Carpi Radialis Longus?

Extensor Carpi Ulnaris

What muscle is this?

Dorsal Aspect of Base of 5th Metacarpal

What is the insertion of the Extensor Carpi Ulnaris?

- Extension

- Ulnar deviation of Wrist

What is the action of the Extensor Carpi Ulnaris?

Extensor Digiti Minimi

What muscle is this?

Extension of wrist and 5th MP joint

What is the action of the Extensor Digiti Minimi?

Extensor Digitorum ( Communis )

What muscle is this?

Extension of Wrist, MP, PIP and DIP Joint of 4 Fingers

What is the action of this muscle Extensor Digitorum ( Communis )?

Extensor Indicis

What muscle is this?

Extension of Wrist, PIP and DIP of Index Finger

What is the action of the Extensor Indicis?

23

What is the Total number of Bones in the Elbow and Wrist combined?

4

There are how many Extrinsic Muscles are there in the thumb?

- Flexor Pollicis Longus

- Extensor Pollicis Longus

- Extensor Pollicis Brevis

- Abductor Pollicis Longus

What are the Extrinsic Muscles in the Thumb?

Anterior Middle Part of Radius

Where does the Flexor Pollicis Longus originate?

Base of Distal Phalanx

Where does the Flexor Pollicis Longus insert?

- Flexion of MP, IP Joint of Thumb

- Assist with Flexion of Wrist Joint

What is the action of the Flexor Pollicis Longus?

Posterior Aspect of Middle of Ulna

Where does the Extensor Pollicis Longus originate?

Distal Phalanx of the Thumb

Where does the Extensor Pollicis Longus insert?

- Extension of MP, IP Joint of Thumb

- Extension of Wrist

What is the action of the Extensor Pollicis Longus?

Lower Portion of Radius

Where does the Extensor Pollicis Brevis originate?

Proximal Phalanx of the Thumb

Where does the Extensor Pollicis Brevis insert?

- Extension of Thumb MP Joint and 1st CMC Joint

- Assist with Radial Deviation

What is the action of the Extensor Pollicis Brevis?

- Posterior Surface of the Body of the Ulna

- Interosseous Membrane

- Middle Third of the Dorsal Surface of the Radius

Where does the Abductor Pollicis Longus originate?

1st Metacarpal

Where does the Abductor Pollicis Longus insert?

Abduction of 1st CMC Joint

What is the action of the Abductor Pollicis Longus ?

Anatomical Snuff Box

Depression formed between:

- Tendon of Abductor Pollicis Longus

- Extensor Pollicis Brevis ( as lateral border )

- Extensor Pollicis Longus (as medial border )

Median Nerve

What nerve is squeezed or compressed in Carpal Tunnel Syndrome?

Carpal Tunnel Syndrome

Pain, numbness, and tingling in the hand and arm as the median nerve is squeezed or compressed as it travels through carpal tunnel.

Typing

What activity can cause Carpal Tunnel Syndrome?

Inflammation of Tendon due to Overuse or Naturally Narrow Space ( heredity )

Any Condition that compromises the space of Carpal Tunnel can cause the following symptoms?

- Numbness

- Tingling

- Burning

- Pain

What are the Symptoms of Carpal Tunnel Syndrome in the Thumb, Index, Middle and Ring Fingers?

Difficulty in performing Fine Movements

If you have Carpal Tunnel Syndrome, weakness in the hand can lead to?