The Forearm
Superficial Flexor Compartment
Superficial Forearm Flexors
The forearm is the region of the
upper limb between the elbow joint
proximally and wrist joint distally
Superficial Forearm Flexors
The forearm is the region of the
upper limb between the elbow joint
proximally and wrist joint distally
Elbow Joint
Superficial Forearm Flexors
The forearm is the region of the
upper limb between the elbow joint
proximally and wrist joint distally
Elbow JointWrist Joint
Superficial Forearm Flexors
The forearm is the region of the
upper limb between the elbow joint
proximally and wrist joint distally
Elbow JointWrist Joint
Forearm
Superficial Forearm Flexors
There are two long bones in the forearm
Superficial Forearm Flexors
There are two long bones in the forearm
Radius lies Laterally
Superficial Forearm Flexors
There are two long bones in the forearm
Radius
Ulna lies Medially
Superficial Forearm Flexors
Cross section through upper third of forearm
Superficial Forearm Flexors
Anterior or Volar Surface
Superficial Forearm Flexors
Anterior or Volar Surface
Posterior or Dorsal Surface
Superficial Forearm Flexors
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral
Superficial Forearm Flexors
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Superficial Forearm Flexors
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Subcutaneous Fat
Superficial Forearm Flexors
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Superficial Forearm Flexors
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Ulna
Superficial Forearm Flexors
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Ulna
Superficial Forearm Flexors
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Ulna
Radius
Superficial Forearm Flexors
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Ulna
Radius
Superficial Forearm Flexors
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Ulna
Radius
Extensor
Compartment
Superficial Forearm Flexors
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Ulna
Radius
Extensor
Compartment
Mobile
Wad
Superficial Forearm Flexors
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Ulna
Radius
Extensor
Compartment
Deep
Flexor
Mobile
Wad
Superficial Forearm Flexors
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Ulna
Radius
Extensor
Compartment
Deep
Flexor
Superficial Flexors
Mobile
Wad
Superficial Forearm Flexors
There are 5 Superficial
Forearm Flexors
Superficial Forearm Flexors
An easy way to remember the
muscles is to place your hand over
the anterior aspect of the opposite
elbow joint also known as the
cubital fossa
Superficial Forearm Flexors
Superficial Forearm Flexors
Superficial Forearm Flexors
Superficial Forearm Flexors
Thumb = Pronator Teres
Superficial Forearm Flexors
Pronates (Internally Rotates)
and Flexes
Forearm at the Elbow Joint
Thumb = Pronator Teres
Superficial Forearm Flexors
Ulna
Radius
Extensor
Compartment
Mobile
Wad
Deep
Flexor
Pronator
Teres
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Superficial Forearm Flexors
Index = Flexor Carpi Radialis
Flexes and Abducts
Hand at Wrist Joint
Superficial Forearm Flexors
Index = Flexor Carpi Radialis
Superficial Forearm Flexors
Ulna
Radius
Mobile
Wad
Deep
Flexor
Flexor Carpi
Radialis
Pronator
Teres
Extensor
Compartment
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Superficial Forearm Flexors
Middle = Palmaris Longus
Flexes Hand at Wrist
Tightens Palmar Aponeurosis
Absent in 1 in 15 people
Superficial Forearm Flexors
Middle = Palmaris Longus
Superficial Forearm Flexors
Ulna
Radius
Extensor
Compartment
Mobile
Wad
Deep
Flexor
Flexor Carpi
Radialis
Palmaris
Longus
Pronator
Teres
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Superficial Forearm Flexors
Ring = Flexor Digitorum Superficialis
Superficial Forearm Flexors
Ring = Flexor Digitorum Superficialis
Flexes fingers at
Proximal Interphalangeal Joints (PIPJ) and
Metacarpophalangeal Joints (MCPJ)
Superficial Forearm Flexors
Ulna
Radius
Extensor
Compartment
Mobile
Wad
Deep
Flexor
Pronator
Teres
Flexor Carpi
Radialis
Palmaris
Longus
Flexor
Digitorum
Superficialis
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Superficial Forearm Flexors
Little = Flexor Carpi Ulnaris
Superficial Forearm Flexors
Flexes and Adducts
Hand at Wrist Joint
Little = Flexor Carpi Ulnaris
Superficial Forearm Flexors
Ulna
Radius
Extensor
Compartment
Mobile
Wad
Deep
Flexor
Flexor Carpi
Radialis
Palmaris
Longus
Pronator
Teres
Flexor
Digitorum
Superficialis
Flexor Carpi
Ulnaris
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Superficial Forearm Flexors
Ulna
Radius
Extensor
Compartment
Mobile
Wad
Deep
Flexor
Flexor Carpi
Radialis
Palmaris
Longus
Pronator
Teres
Flexor
Digitorum
Superficialis
Flexor Carpi
Ulnaris
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Superficial Forearm Flexors
1. Pronator Teres
Superficial Forearm Flexors
1. Pronator Teres
2. Flexor Carpi Radialis
Superficial Forearm Flexors
1. Pronator Teres
2. Flexor Carpi Radialis
3. Palmaris Longus
Superficial Forearm Flexors
1. Pronator Teres
2. Flexor Carpi Radialis
3. Palmaris Longus
4. Flexor Digitorum Superficialis
Superficial Forearm Flexors
1. Pronator Teres
2. Flexor Carpi Radialis
3. Palmaris Longus
4. Flexor Digitorum Superficialis
5. Flexor Carpi Ulnaris
Nerves
Superficial Forearm Flexors
Median Nerve supplies all the
Superficial Muscles of the Forearm…
with one exception
Superficial Forearm Flexors
Median Nerve supplies all the
Superficial Muscles of the Forearm…
with one exception
Superficial Forearm Flexors
Flexor Carpi Ulnaris
is supplied by the
Ulnar Nerve
Superficial Forearm Flexors
Flexor Carpi Ulnaris
is supplied by the
Ulnar Nerve
Superficial Forearm Flexors
Ulna
Radius
Extensor
Compartment
Mobile
Wad
Deep
Flexor
Flexor Carpi
Radialis
Palmaris
Longus
Pronator
Teres
Flexor
Digitorum
Superficialis
Flexor Carpi
Ulnaris
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Median Nerve
Superficial Forearm Flexors
Ulna
Radius
Extensor
Compartment
Mobile
Wad
Deep
Flexor
Flexor Carpi
Radialis
Palmaris
Longus
Pronator
Teres
Flexor
Digitorum
Superficialis
Anterior or Volar Surface
Posterior or Dorsal Surface
Lateral Medial
Ulnar Nerve
Flexor Carpi
Ulnaris
Median Nerve
Summary of Muscles
Anterior Forearm
Pronator Teres
Origin Humeral head from medial
epicondyle and supracondylar
ridge of humerus.
Ulnar head from medial border
of coronoid process of ulna
Insertion Middle of lateral surface of
radius
Action Pronates and flexes forearm
(at elbow)
Nerve Supply Median nerve (C6 and C7)
Blood Supply Ulnar artery, anterior
recurrent ulnar artery
Anterior Forearm
Flexor Carpi Radialis
Origin Common flexor origin medial
epicondyle of humerus
Insertion Base of 2nd and 3rd
metacarpal
with a slip to the scaphoid
Action Flexes and abducts hand (at
wrist)
Nerve Supply Median nerve (C6 and C7)
Blood Supply Ulnar artery
Anterior Forearm
Palmaris Longus
Origin Common flexor origin, medial
epicondyle of humerus
Insertion Distal half of flexor
retinaculum and palmar
aponeurosis
Action Flexes hand (at wrist) and
tightens palmar aponeurosis
Nerve Supply Median nerve (C7 and C8)
Blood Supply Ulnar artery
Anterior Forearm
Flexor Digitorum Superficialis
Origin Humeral head: common flexor origin,
medial epicondyle of humerus
Ulnar head: ulnar collateral ligament,
and coronoid process of ulna
Radial head: superior half of anterior
border of radius, anterior oblique line
Insertion Bodies of middle phalanges digits 2 –5
Action Flexes middle phalanges at proximal
interphalangeal joints of medial four
digits; acting more strongly, it also
flexes proximal phalanges at
metacarpophalangeal joints and
flexes hand at wrist joint
Nerve Supply Median nerve (C7, C8 and T1)
Blood Supply Ulnar artery
Anterior Forearm
Flexor Carpi Ulnaris
Origin Humeral head: common flexor
origin, medial epicondyle of
humerus
Ulnar head: olecranon and
upper 2/3rds posterior border
of ulna
Insertion Pisiform, hook of hamate, and
5th metacarpal base
Action Flexes and adducts hand (at
wrist)
Nerve Supply Ulnar nerve (C7 and C8)
Blood Supply Ulnar artery

Funky Professor forearm superficial flexors