Lower limb 1 Flashcards
Function of lower limbs
Support weight of the body Locomotion *Gait cycle Centre of gravity Line of gravity
Joint structure is always a trade-off between…?
Stability & mobility
Regions of the Lower Limb
Gluteal region
Thigh
Leg
Foot
Gluteal Region (consists of)
Iliac crest -> gluteal fold (buttocks)
Thigh region (consists of)
Proximal
Between “groin” (inguinal ligament) & knee joint
Includes hip joint
Leg region (consists of)
Distal
Between knee joint & ankle joint
Foot region (consists of)
Distal to ankle joint - makes contact with the ground Toes (digits) Great tow (hallucis)
Bones of the Upper Limb
Pelvic bone (ilium, ischium, pubis) Femur Patella Tibia Fibula Tarsals Metatarsals Phalanges
Pelvic bone: what are the 3 fused bones?
Ilium (posterior)
Ischium (inferior)
Pubis (anterior)
What part of the pelvic bone does the femur fit?
Acetabulum (lateral)
Pelvic bone: attachment site for what muscles?
Many muscles (e.g. gluteals (posterior), iliopsoas (anterior), hamstrings (inferior)
Femur bone: bone shape
Long bone
Pelvic bone: bone type?
Irregular bone
Femur bone: proximal head articulates with?
Acetabulum of hip bone
Femur bone: distal medial and lateral condyles articulate with?
Tibia (knee joint)
Femur bone: posterior gluteal tuberosity articulates with?
Gluteus maximus
Patella bone: bone type
Sesamoid bone
Patella bone: anterior region articulates with?
Femur (protects anterior aspect of knee joint)
Patella bone: proximal region attaches to?
Quadriceps tendon
Patella bone: distal region (patellar ligament) attaches to?
Tibial tuberosity
Tibia bone: anatomical location?
Medial of the leg
Tibia bone: bone type
Long bone, large (weight bearing)
Tibia bone: proximal region (tibial plateau) articulates with?
Femoral condyles (knee joint)
Tibia bone: tibial tuberosity attaches to?
Patellar ligament
Tibia bone: distal region (medial malleolus) articulates with?
Talus (tarsal bone) (ankle joint)
Fibula bone: anatomical location?
Lateral of the leg
Fibula bone: bone type
Long bone (non-weight-bearing) (not part of knee joint - doesn’t articulate with femur)
Fibula bone: proximal region (head) articulates with?
Tibia
Fibula bone: distal region (lateral malleolus) articulates with?
Talus (tarsal bone) (ankle joint)
Fibula bone: what stabilises the tib-fib relationships and separates those muscles?
Interosseous membrane
Bones of the foot
Tarsals
Metatarsals
Phalanges
Tarsal bones: how many bones?
7 bones
Tarsal bones: connects to what bones?
Ankle (talus), heel (calcaneus)
Tarsal bones: associated joints
Intertarsal joints
Tarsometatarsal joints
Metatarsal bones: how many bones?
5 long bones
Metatarsal bones: associated joints
Intermetatarsal joints
Metatarsophalangeal joints
Phalange bones: how many bones (large toe)?
2 phalanges
Phalange bones: how many bones (toes - II->V)?
3 phalanges
Phalange bones: associated joint
Interphalangeal joint (PIP, DIP, IP)
Joints of the lower limb
Pelvis girdle Hip Joint Knee Joint Ankle Joint Foot
Hip joint: anatomical location?
Lateral
Hip joint: what bones does it connect?
Femur (head) -> hip bone (acetabulum)
Hip joint: functional type & movements?
Ball & socket - Flexion/extension, abduction/adduction, rotation
Hip joint: purpose?
Stable for weight bearing due to:
High bony congruence/contact
Labrum
Joint capsule & ligaments
Knee Joint: what bones does it connect?
Femur (condyles) -> tibia (tibial plateau)
Knee Joint: functional type & movements
Condylar - flexion/extension, rotation (in flexion, for ‘locking’)
Knee Joint: purpose?
Low stability due to:
Low bony congruence
Knee Joint ligaments: 3 types
Joint Capsule
Collateral ligaments
Cruciate ligaments
Collateral ligaments: types
Medial (tibia) & lateral (fibula)
Medial collateral ligament prevents…?
Abduction
Lateral collateral ligament prevents…?
Adduction
Cruciate ligament: types
Anterior (ACL)
Posterior (PCL)
Anterior Cruciate ligament prevents…?
Anterior sliding of the tibia
Posterior Cruciate ligament prevents…?
Posterior sliding of tibia
Menisci of Knee joint aka…?
Fibrocartilage pads
Menisci of Knee joint: attachment site
Tibia (tibial plateau)
MEDIAL Menisci of Knee joint: attached to what ligaments?
Medial collateral ligament
Lateral collateral ligament
Menisci of Knee joint: function?
Increase stability
Deepens the articulation = more contact between joint surfaces
Weight bearing, shock absorption
Ankle joint
Talocrural joint
Talocrural Joint: connects what bones?
Tibia & fibula -> talus (tarsal bone)
Talocrural Joint: functional type & movements
Hinge => flexion (plantar flexion), extension (dorsiflexion)
Talocrural Joint: connects to what ligaments?
Medial (tibial)
Lateral (fibular)
Talocrural Joint: most stable when in…?
Dorsiflexion
Joints of the foot & toes (digits)
Intertarsal
Tarsometatarsal, intermetatarsal
Metatarsophalangeal
Interphalangeal
Intertarsal Joint: functional type
Plane Joint
Intertarsal Joint: movements
Inversion (bottom of foot points towards midline)
Eversion (bottom of foot points towards outside - lateral)
Tarsometatarsal/intermetatarsal Joint: functional type
Arthrodial
Tarsometatarsal/intermetatarsal Joint: movement
Sliding
Metatarsophalangeal joint: functional type
Condyloid
Metatarsophalangeal joint: movements
Flexion, Extension, Abduction, Adduction
Interphalangeal Joint: functional type
Uniaxial hinge
Interphalangeal Joint: movements
Flexion & extension