Snell's anatomy lower limb

59 topics across 7 chapters

Chapter 1

Foundations (Snell-style): terminology, planes, and how to study

Master lower-limb directional terms and key regional terms used in Snell

Use planes/axes to describe hip, knee, and ankle movements (flex/ext, abd/add, rotation)

Read Snell figures efficiently: identify boundaries → contents → clinical correlations

Build a weekly workflow: tables (muscles/nerves) + redraw diagrams + spaced repetition

Chapter 2

Osteology & bony landmarks (what you must be able to label)

Hip bone & pelvis: ilium/ischium/pubis landmarks and acetabulum orientation

Femur & patella: head/neck/trochanters, linea aspera, condyles, patellar facets

Tibia & fibula: tibial plateau/tuberosity, malleoli, fibular head and key grooves

Foot bones & arches: tarsals, metatarsals/phalanges, medial/lateral longitudinal arches

Radiographic osteology basics: identify major landmarks on pelvis, knee, and ankle films

Surface bony palpation set: ASIS/greater trochanter, tibial tuberosity, malleoli, navicular

Landmark labeling drills: blank diagrams for pelvis/femur/knee/ankle/foot (timed)

Chapter 3

Joints, ligaments & biomechanics (what stabilizes what)

Hip joint: capsule, key ligaments, labrum, and clinical blood supply relevance

Knee joint: ACL/PCL, MCL/LCL, menisci, bursae, and locking/unlocking mechanism

Ankle/subtalar/midfoot joints: mortise concept, major ligament complexes, inversion/eversion

Create a movements & ROM table: prime movers + limiting ligaments + close-packed positions

Ligament injury mechanisms map: hip dislocation directions, ACL mechanisms, ankle sprain patterns

Chapter 4

Muscles, fascia & compartments (actions + innervation + compartment logic)

Gluteal region muscles: extensors/abductors + deep lateral rotators (and why they matter clinically)

Thigh compartments: anterior/medial/posterior, fascia lata & iliotibial tract relationships

Leg compartments: anterior/lateral/posterior, retinacula, and tendon compartment organization

Intrinsic foot muscles: plantar layers, key actions, and plantar aponeurosis function

Muscle table drill: for each compartment list (origin→insertion→action→innervation) from memory

Compartment syndrome anatomy: boundaries, vulnerable structures, and clinical consequences

Chapter 5

Neurovascular & lymphatic anatomy (routes you must be able to trace)

Lumbar & sacral plexus overview: roots → named nerves (build a one-page map)

Major nerves: femoral, obturator, sciatic → tibial/common fibular (course + motor/sensory)

Arterial supply: external iliac → femoral/profunda → popliteal → tibial → plantar arch

Venous drainage: deep veins + great/small saphenous veins and key anastomoses

Lymphatics: superficial vs deep drainage; inguinal and popliteal nodes (what drains where)

Dermatomes & cutaneous nerves of the lower limb: key sensory points for localization

Nerve lesion localization practice (case-based)

3 subtopics

Case drill: foot drop—differentiate common fibular neuropathy vs L5 radiculopathy

Case drill: weak knee extension + reduced patellar reflex—localize to femoral nerve/L2–L4

Case drill: medial thigh sensory loss + adduction weakness—localize to obturator nerve

Chapter 6

Regional anatomy walkthrough (spaces, boundaries, and what passes through)

Gluteal region: sciatic nerve, gluteal vessels/nerves, and safe injection concepts

Femoral triangle & adductor canal: boundaries, contents, and clinical landmarks

Popliteal fossa: boundaries, contents, and why aneurysms/compression matter

Leg & ankle bundles: anterior tibial route; posterior tibial route; tarsal tunnel contents

Sole of foot: plantar arch, plantar nerves/arteries, and functional compartment layout

Dorsum of foot: extensor tendons, dorsalis pedis artery, and superficial nerves

Drawing drills: redraw femoral triangle, popliteal fossa, and tarsal tunnel from memory

Chapter 7

Clinical integration (Snell correlations): gait, injuries, exams, procedures, imaging

Gait essentials: gait cycle idea + Trendelenburg concept tied to hip abductors

Fractures/dislocations & ligament injuries: hip fractures, ACL patterns, ankle sprains (anatomy-based)

Nerve entrapments/neuropathies (anatomy-to-symptoms mapping)

4 subtopics

↗ Dermatomes & cutaneous nerves of the lower limb: key sensory points for localization (see Chapter 5)

Meralgia paresthetica: lateral femoral cutaneous nerve course and compression sites

Common fibular neuropathy: fibular neck vulnerability and dorsiflexion/eversion deficits

Tarsal tunnel syndrome: boundaries, contents, and sensory distribution patterns

Vascular & venous disease anatomy: pulses/PAD basics, DVT reasoning, varicose vein patterns

Physical exam & special tests (turn anatomy into bedside steps)

3 subtopics

↗ Surface bony palpation set: ASIS/greater trochanter, tibial tuberosity, malleoli, navicular (see Chapter 2)

Neurovascular exam steps: pulses, cap refill, motor groups by nerve, dermatomal sensory checks

Special tests list to memorize with anatomy: Trendelenburg, Lachman, McMurray, anterior drawer

Procedures & landmarks: IM injections, femoral pulse/cannulation landmarks, basic nerve block concepts

Integrate with cases: pick 10 common presentations and explain them using Snell anatomy diagrams