3.4.3. Adductor Muscle Compartment Flashcards
What are the 2 Groups, which the Muscles that act on the Hand, can be Divided into?
- Extrinsic Muscles
2. Intrinsic Muscles
Where are the Extrinsic Muscles of the Hand located?
- Anterior Compartment of the Forearm
2. Posterior Compartment of the Forearm
What are the functions of the Extrinsic Muscles of the Hand?
- Control Crude Movements
2. Produce a Forceful Grip
Where are the Intrinsic Muscles of the Hand located?
Within the Hand itself
What is the function of the Intrinsic Muscles of the Hand?
Fine Motor Control of the Hand
What are the 5 Muscle Compartments, of the Intrinsic Muscles of the Hand?
- Thenar Muscle Compartment
- Hypothenar Muscle Compartment
- Adductor Compartment
- Lumbricals and Long Flexor Tendons (Central) Compartment
- Interossei Compartment
How many Muscles are in the Adductor Muscle Compartment?
1
What is the name of the Muscle in the Adductor Muscle Compartment?
Adductor Pollicis
How is the Adductor Pollicis described?
A Large, Triangular Muscle
How many Heads does the Adductor Pollicis have?
2
- What passes Anteriorly, in the Space Between the 2 Heads of the Adductor Pollicis?
- What does this form?
- Radial Artery
2. Deep Palmar Arch
Where does the Adductor Pollicis Originate from?
- One Head Originates from the Third Metacarpal
- One Head Originates from:
a) Capitate
b) Adjacent Areas of the Second and Third Metacarpals
Where does the Adductor Pollicis attach distally?
Base of the Proximal Phalanx of the Thumb
What is the function of the Adductor Pollicis?
Adduction of the Thumb
What innervates the Adductor Pollicis?
Deep Branch of the Ulnar Nerve