ULFlexors.txt

• attach: med. epicondyle of humerus (via common flexor tendon), coronoid process of ulna
• mid radius (lat. surface)
• nerve: median n.
• action: pronates forearm
• Anterior Compartment of the Forearm (superficial)
• attaches to mid-radius

• attach:med. epicondyle of humerus (via common flexor tendon)
• base of 2nd metacarpal
• nerve: median n.
• action: flexes & abducts (radial deviation) of hand
• Anterior Compartment of the Forearm (superficial)
• sends tendon to radial side of wrist

• attach: med. epicondyle of humerus (via common flexor tendon)
• palmar aponeurosis
• nerve: median n.
• action: aids in flexion of hand, tightens palmar aponeurosis
• Anterior Compartment of the Forearm (superficial)
• sends tendon to palmar aponeurosis

• attach: med. epicondyle of humerus ( via common flexor tendon), olecranon process, post. ulna
• pisiform bone, hook of hamate, 5th metacarpal bone
• nerve: ulnar n.
• action: flexes & adducts (ulnar deviation) hand
• Anterior Compartment of the Forearm (superficial)
• sends tendon to the ulnar side of wrist

• attach: med. epicondyle of humerus (via common flexor tendon), ulnar collateral lig., coronoid
• process of ulna, superior radius
• middle phalanges of medial four digits
• nerve: median n.
• action: flexion of medial 4 phalanges at proximal IP joints
• Anterior Compartment of the Forearm (Intermediate)
• sends tendons to medial 4 digits

• attach: proximal ulna & interosseus membrane
• distal phalanges of medial four digits
• nerve: medial � - ulnar nerve, lateral � - median n.
• action: flexion of the medial 4 phalanges at distal IP joints
• Anterior Compartment of the Forearm (deep)
• immediately deep to FDS

• attach:radius & interosseus membrane
• distal phalanx of thumb
• nerve: median n. (anterior interosseus branch)
• action:flexes thumb
• Anterior Compartment of the Forearm (deep)
• on radial side of forearm

• attach: distal ulna
• distal radius
• nerve:median n. (anterior interosseus branch)
• action: pronates forearm
• Anterior Compartment of the Forearm (deep)
• deep to distal FDS and FPL; runs horizontally between radius & ulna

• attach: coracoid process of scapula (short head)
• supraglenoid tubercle of scapula (long head)
• radial tuberosity & forearm fascia
• nerve:: musculocutaneous n.
• action: flexion and supination of forearm; flexion of arm at shoulder
• artery: brachial artery

• attach:anterior humerus (distal �)
• coronoid process of ulna & ulnar tuberosity
• nerve: musculocutaneous n.
• action: flexion of forearm
• artery:brachial artery
• deep to inferior � of biceps

• attach: coracoid process of scapula
• medial humerus
• nerve:musculocutaneous n.
• action: flexes and adducts arm
• deep to superior � of biceps

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• Superficial Layer Muscles:
• 1.pronator teres (PT)
• 2.flexor carpi radialis (FCR)
• 3.palmaris longus (PL)
• 4.flexor carpi ulnaris (FCU)
• Intermediate Layer Muscles
• 1.flexor digitorum superficialis (FDS)
• Deep Layer Muscles
• 1.flexor digitorum profundis (FDP)
• 2.flexor pollicis longus (FPL)
• 3.pronator quadratus (PQ)

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• A painful musculoskeletal condition that may follow repetitive use of the wrist flexor-pronator group as a result of activities such as golfing.
• Pain is experienced on the medial side of the elbow. Repeated forceful movements strain the common
• flexor tendon of these muscles and produce inflammation of the medial epicondyle.

• The median nerve (and its anterior interosseus branch) and the ulnar nerve.
• All of the anterior compartment muscles are innervated by the median nerve except for 1 and 1/2 muscles.
• The flexor carpi ulnaris and ½ of the flexor digitorum profundis are innervated by the ulnar nerve.

• A branch of the common interosseus artery which divided into anterior & posterior branches.
• The common interosseus artery is a branch of the ulnar artery

A continuation of the axillary artery and travels down the arm in the medial neurovascular bundle.

• deep
• brachial artery –
• The brachial artery gives rise to the deep brachial artery (profunda
• brachii a.) as it enters into the arm. The deep brachial artery
• will travel into the posterior compartment of the arm and will
• accompany the radial nerve in the radial groove of the humerus deep
• to the triceps.

• Tuns down the medial aspect of the arm. This bundle contains the
• brachial artery,
• brachial veins,
• basilic vein,
• median nerve,
• ulnar nerve,
• and medial
• antebrachial cutaenous nerve

• bursae (synovial sacs).
• olecranon bursa-deep to the triceps tendon is the subtendinous
• subcutaneousolecranon bursa In the superficial fascia over the olecranon process of the ulna

Clinical note: Inflammation of these bursae is called “bursitis”.

• The elbow joint ligaments – the elbow has a thin articular capsule. Anteriorly and posteriorly the joint is protected by muscles, but medially and laterally it is strengthened by 2 special ligaments:
• (1) the radial (lateral) collateral ligament [a.k.a. lateral collateral ligament –LCL],
• (2) the ulnar (medial) collateral ligament [a.k.a. medial collateral ligament – MCL].
• The annular ligament helps protect the proximal radioulnar joint and allows the head of the radius to move beneath it while preventing it from being displaced.

• (1) the humeroulnar, (flex ext)
• (2) the humeroradial, (flex ext)
• (3) the radioulnar articulations. (supination/pronation)

• B. Important structures of the ulna:
• 1. trochlear notch
• 2. coronoid process
• 3. radial notch
• 4. ulnar tuberosity
• 5. body
• 6. head
• 7. styloid process
• C. Important structures of the radius:
• 1. head
• 2. neck
• 3. radial tuberosity
• 4. styloid process
• 5. body