Lesson 1Path of radial nerve in di armpit an upper arm: relations to armpit vessels, humeral head, an latissimus dorsiHere wi follow di radial nerve in di armpit an upper arm, detailin ih relation to di armpit artery, humeral head, latissimus dorsi, an surroundin fascia, wid emphasis on compression spots, trauma risk, an surgical exposure paths.
Relations to axillary artery and veinCourse around humeral head and neckRelations to latissimus dorsi and teres majorFascial tunnels and potential compression sitesSurgical approaches in the proximal armLesson 2Key landmarks fi bedside localization an surgical exposure: lateral epicondyle, radial head, spiral groove, supinator tunnelDis section identify reliable surface an deep landmarks fi localizin di radial nerve an ih branches, guidin bedside check-up, ultrasound, an surgical exposure roun di lateral epicondyle, radial head, spiral groove, an supinator tunnel.
Palpation of lateral epicondyle and radial headLocating the spiral groove on the humerusIdentifying the supinator tunnel regionUltrasound landmarks for radial branchesSafe windows for surgical approachesLesson 3Relevant microanatomy: epineurium, perineurium, endoneurium, vasa nervorum an implications fi injury an recoveryWi detail radial nerve microanatomy, includin epineurium, perineurium, endoneurium, an vasa nervorum, explainin how dese layers respond to stretch, compression, an laceration, an how dem influence regeneration, neuroma formation, an repair strategies.
Epineurial structure and surgical handlingPerineurium and fascicular organizationEndoneurial tubes and axonal supportVasa nervorum and ischemic vulnerabilityMicroanatomy and regeneration patternsLesson 4Brachial plexus roots an contribution to radial nerve (C5–T1): posterior cord formation an anatomical variantsDis section review how C5–T1 roots form di posterior cord an radial nerve, highlightin spatial relations in di neck an armpit, frequent anatomical variants, an how dese patterns influence weakness, sensory loss, an electrodiagnostic findings.
C5–T1 root contributions to radial nerveTopography of trunks, divisions, and cordsPosterior cord formation and branching patternCommon root and cord anatomical variantsClinical impact of high or low root lesionsLesson 5Posterior interosseous nerve (PIN): entry through supinator (arcade of Frohse), motor branches to forearm extensors, typical branching patternHere wi focus on di posterior interosseous nerve, from ih entry through di supinator an arcade of Frohse to ih motor branches fi forearm extensors, describin typical an variant branching patterns an dem role in selective palsies an surgical plannin.
Entry beneath ECRB to supinatorArcade of Frohse anatomy and variantsIntramuscular course within supinatorMotor branches to wrist and finger extensorsPatterns in selective PIN palsiesLesson 6Spiral (radial) groove anatomy: position relative to humerus, branches to triceps an anconeus, vascular relationsDis section analyze di spiral groove segment, describin ih position on di back humerus, relations to triceps an anconeus branches, nearby vascular structures, an why dis zone vulnerable in fractures, entrapment, an surgical procedures.
Surface and radiographic localizationRelations to triceps and anconeus branchesContact with posterior humeral cortexRadial collateral and profunda brachii vesselsRisk zones in humeral shaft fracturesLesson 7Terminal motor an sensory territories: extensor compartment muscles, triceps, brachioradialis, anconeus, finger extensors, an dorsal hand sensory mapDis section map terminal motor an sensory territories, linkin each radial nerve branch to specific extensor muscles, triceps, brachioradialis, anconeus, an dorsal hand skin zones, to support precise bedside localization an electrodiagnostic interpretation.
Motor map of triceps and anconeusInnervation of wrist and finger extensorsBrachioradialis and ECRL innervation zonesDorsal hand and thumb sensory territoriesPatterns of overlap with median and ulnarLesson 8Common anatomical variants influencin clinical presentation: high bifurcation, accessory branches, variable innervation of brachioradialis an ECUWi review common radial nerve anatomical variants, includin high bifurcation, accessory branches, an variable innervation of brachioradialis an ECU, emphasizin how dese patterns alter clinical signs, nerve conduction studies, an surgical expectations.
High radial bifurcation patternsAccessory branches to triceps or brachialisVariable innervation of brachioradialisECU and ECRB innervation variantsImpact on EMG and nerve conduction testsLesson 9Division at lateral epicondyle/elbow: superficial sensory branch an deep branch (posterior interosseous nerve) anatomical detailsWi examine di radial nerve division near di lateral epicondyle, contrastin di superficial sensory branch an deep motor branch (PIN), dem fascicular organization, relations to di radial head, an implications fi entrapment, injections, an surgical decompression.
Anatomy at the lateral epicondyleBranching into superficial and deep branchesRelations to radial head and joint capsuleFascicular topography at the bifurcationEntrapment and iatrogenic injury risksLesson 10Forearm course of superficial branch: subcutaneous path, branches to dorsum of hand an anatomic snuffboxDis section follow di superficial radial nerve along di forearm, detailin ih subcutaneous course, fascial planes, branches to di dorsum of di hand an anatomic snuffbox, an how dis anatomy guide sensory testin, blocks, an surgical incisions.
Course deep to brachioradialisTransition to subcutaneous positionBranches to dorsum of hand and fingersAnatomic snuffbox relations and branchesSites of Wartenberg syndrome compression
