Elbow And Forearm

Front 1

Elbow joint: j1

Type; Bones ; Ligaments; Movement*; Muscles; Arteries (B DISH); Nerves, Bursae (OB)

Back 1

-Hinge Synovial
-Trochlea and capitulum/trochlear notch and head of radius (+ Olecranon on ulna)
-Ulnar Collateral, Radial Collateral, Annular (ALL intrinsic)
-Flex: Brachialis and biceps brachii; Ext: Triceps brachii

-Blood: Brachial, Deep artery of arm, Inferior and Superior ulnar collateral, Humeral Nutrient artery;
-Musculocutaneous, Radial, Ulnar
-Olecranon, Bicipitoradial

Front 2

j2 Proximo Radial Ulnar Joint:

Type; Articulation + Ligaments; Movement; Muscles; Innervations (sup vs pron)

Back 2

-Synovial Pivot;
- @Radial head + radial notch Annular ligament of radius;
-supinator (post fa) or biceps; pronator quadratus or pronator teres (ant fa)
-sup: musculocutaneous, radial; pro: median

Front 3

j3 Distal Radial Ulnar Joint

Type, Articulartion; Ligament (+ alt name + TFFC), Blood supply and Innervation

Back 3

-Synovial Pivot;
-Ulnar head and ulnar notch;
-Articular disc of the distal radio-ulnar joint aka Triangular Ligament or Triangular FibroCartilage complex
-Interosseous arteries and nerves

Front 4

j4 Cubital Fossa:
Superior, Medial, Lateral boundaries;

Contents MR DBM

Back 4

Line between humeral condyles; Flexor MM mainly pronator teres; Extensors MM mainly brachioradialis (technically flexes though)

-Median Nerve, Radial Nerve Deep Accompanying Veins, Brachial Artery (radial/ulnar), Median cubital vein

Front 5

Two Compartments of Forearm

Alternate names + retinaculums

Back 5

-Anteriomedial = (volar) Flexor-pronator compartment; Posterolateral = Extensor-supinator compartment

-Flexor Retinaculum (aka Transverse Carpal Ligament (TFC)) and Extensor retinaculum;

Front 6

J5.5 Anterior compartment muscles + actions (see diagram for origin/insertion <-- J5.5b)
j5.5a = chart

superficial: P2FPF Intermediate: F Deep: FFP

Nerves involved:

Back 6

Pronator Teres (PT ulnar head = M6,7 Pronate, flex forearm at elbow PT Humeral head = same) ; Flexor Carpi Radialis (FCR=M6,7 Flex and ABduct hand at wrist ); Palmaris Longus (PL= M7,8 Flex hand at wrist, tense palmar aponeurosis* ); Flexor Carpi Ulnaris (FCU @ ulnar and humeral head = U7,8 Flex and adduct hand at wrist );

Flexor Digitorum Superficialis (FDS= M: 7,8 (+T1), Flex Middle IP joints and strongly flex MCP of medial four digits (aka no thumb));

Flexor Digitorum Profundis (FDP= Medial part = U 8,1 Flex Distal 4,5 IP joint; Lateral part = Ant Interossius Nerve (from median) 8,1 flex distal 2,3 IP joint ); Flexor Pollicis Longus (FPL = AIN 8,1 Flex Phalanges at 1st digit), Pronator Quadratus (PQ= PI 8,1 Pronate forearm, finds ulna and radius together )

Median and anterior interosseous and Ulnar (FCU) but NO radial1

Front 7

J6 Posterior Compartment: (allnumbers = Cervical nerve e.g. C7,C8)
J6a = chart;

Attachments/Insertions : J6b

Wrist: E(ccc) x3; Extenso fingers E(did); thumb: E(pp) + BASE;

Back 7

Extensor Carpi: Radialis Longus (ECRL = R6,7 Extend and abduct hand + clench); Radialis Brevis (ECRB= DBR 7,8; same action - clench); Ulnaris (ECU=DBR 7,8;same + clenching )

Extensor: Digitorum Communis (EDC= DBR 7,8 extension medial 4 digits at MCP joints ); Indicis (EI= Post Interosseus 7,8 ); Digiti Minimi EDM= DBR 7,8 Extends 5th digit at MCP joint + InterP joint);

Extensor Pollicis Brevis (EPB= ); Extensor Pollics Longus (EPL= )

Brachioradialis (BR=Radial 5,6,7 weak forearm flexion [max at mid-pronate ); Abductor Pollicis Longus (APL=Post Interosseus 7,8 Abduct thumb, extend at MCP joint ); Supinator (S=DBR 7,8 supinate forearm, rotate radius to turn palm anter or superior ); Extensor Indicis (EI=PI 7,8 Extend 2nd digit, aids wrist extension )

Front 8

Nerves of Forearm and Hand:
J7 Median: Branches = RAP; Supplies = PAPP FARO

J7b Ulnar: Branches = PDD(hand) + FF (forearm)
Supplies FAOFA FIFU

J7c Radial: SDS , Supplies: All posterior! 8 E + BAS

Back 8

Recurrent Branch of Median Nerve (motor to thenar); Anterior Interosseous (pronator quadratus) Palmar cutaneous (central palm sensory);
Palmaris Longus, All flexors except FDP to 4&5; Pronator Teres, Pronator quadratus

FPB, APB, Radial two lumbricals, Opponens pollicis;

Ulnar: Palmar cutaneous (ulnar half palmar surface) Dorsal cutaneous (ulnar half dorusm hand, small finger 1/2 ring); Deep Branch (MM of hand) + !! FCU and ulnar half FDP in forearm

FDP (4,5 digit), ADM, ODM, FCU, Adductor Pollicis, FDM,Interossei, FPB, Ulnar two lumbricals

Superficial radial (sensory dorsal hand), Deep branch of Radial nerve AKA Posterior Interosseus nerve (ALL mm post arm compartment, distal lat epicondyle) Superficial branch of radial nerve (radial 2/3 hand dorsum + thumb and 1.5 digits)
Supplies ALL posterior 11 muscles;

Front 9

J8 Arteries and J8bVeins of forearm

Back 9

Sketch/Study (check lab guide)