3 - Kines - Unit 4 - Leg & Foot Flashcards
Leg & Foot - 58 Bones
Includes distal ends of femur
- Femur (thigh bones) - x2
- Tibia (medial leg bone) - x2
- Fibula (lateral leg bone) - x2
- Tarsals (ankle bones) - x14 (7 per ankle)
- Metatarsals (foot bones) - x10 (5 per foot)
- Phalanxes (toe bones) - x28 (14 per foot)
Leg & Foot - Landmarks
- Femur (distal end)
- Tibia
- Fibula
- Tarsals
- Metatarsals
- Phalanxes
Landmarks - Definition - Condyle
Rounded, knuckle-like projection at the end of a bone usually at a joint
Landmarks - Definition - Tuberoristy
Large, rounded, usually roughened protuberance
Leg & Foot - Landmarks - Femur
Distal end
- Medial condyle
- Lateral condyle
Leg & Foot - Landmarks - Tibia
- Medial condyle (plateau)
- Lateral condyle (plateau)
- Tibial tuberosity
- Soleal line
- Medial malleolus
Leg & Foot - Landmarks - Fibula
- Head of the fibula
- Lateral malleolus
Leg & Foot - Landmarks - Tarsal
- Calcaneus (heel bones)
- Talus (“ankle” bone)
- Navicular
- Cuboid
- Medial (1st) cuneiform
- Middle (2nd) cuneiform
- Lateral (3rd) cuneiform
Leg & Foot - Landmarks - Metatarsals
Numbered 1-5 with big toe being #1
Leg & Foot - Landmarks - Phalanxes
First digit/phalange = big toe = hallux/hallex/hallicus/hallicus
Big toe: only 2 phalanxes
Other 4 digits: 3 phalanges per digit
Leg & Foot - Landmarks - Other structures (x8)
- Anterior cruciate ligament (ACL)
- Posterior cruciate ligament (PCL)
- Medial (tibial) collateral Ligament (MCL)
- Lateral (fibular) collateral Ligament (LCL)
- Meniscus of the knee
- Interosseous membrane - helps hold the two leg bones together
- Plantar Aponeurosis
- Arches of the foot
Landmarks - Definition - Aponeurosis
Broad sheet of connective tissue
Leg & Foot - Landmarks - Other structures - Arches of the foot
- Medial Longitudinal Arch
- Lateral Longitudinal Arch
- Transverse Arch
Leg & Foot - 9 Joints
- Tibiofemoral (knee) joint
- Proximal tibiofibular joint
- Distal tibiofibular joint
- Talocrural joint
- Midtarsal joints
- Tarsometatarsal joints
- Metatarsophalangeals joint (MTP)
- Proximal interphalangeal joint (PIP)
- Distal interphalangeal joint (DIP)
Leg & Foot - Joints - Tibiofemoral (knee) joint
Hinge joint
Formed by distal femur + proximal tibia
Knee joint also includes patella (which articulates femur)
Leg & Foot - Joints - Proximal tibiofibular joint
Gliding joint
Formed by proximal tibia + proximal fibula
Leg & Foot - Joints - Distal tibiofibular joint
Gliding joint
Formed by distal tibia + distal fibula
Leg & Foot - Joints - Talocrural joint
Modified saddle joint
Formed by distal tibia + distal fibula + talus
Leg & Foot - Joints - Midtarsal joints
Gliding joint
Formed by various tarsal
Leg & Foot - Joints - Tarsometatarsal joints
Gliding joint
Formed by tarsals + proximal ends of metatarsals
Leg & Foot - Joints - Metatarsophalangeals joint (MTP)
Ellipsoid joint
Formed by distal end of a metatarsal + proximal end of proximal phalanx
Leg & Foot - Joints - Proximal interphalangeal joint (PIP)
Hinge joint
Formed by proximal + middle phalanx
Leg & Foot - Joints - Distal interphalangeal joint (DIP)
Hinge joint
Formed by middle + distal phalanx
Movements - Knee / Leg Movement
- Flexion of the knee
- Extension of the knee
Movements - Knee / Leg Movement - Flexion
Decrease of the angle in a joint by bringing bones together
Movements - Knee / Leg Movement - Extension
Increase of the angle in a joint by moving bones apart
Movements - Ankle / Foot Movement
- Plantarflexion of the ankle
- Dorsiflexion of the ankle
- Eversion of the ankle
- Inversion of the ankle
Movements - Ankle / Foot Movement - Plantarflexion
Flexing the ankle down towards the plantar surface of the foot
as if pressing down on a car’s brake pedal
Movements - Ankle / Foot Movement - Dorsiflexion
Flexing ankle up towards the dorsal surface of the foot
As if walking on one’s heels
Movements - Ankle / Foot Movement - Eversion
Turning the sole of the foot outward or latterally thus streching the medial aspect of the ankle
Movements - Ankle / Foot Movement - Inversion
Turning the sole of the foot inward or medially thus stretching the lateral aspect of the ankle
Movements - Toe movements
- Flexion of the toes
- Extension of the toes
- Abduction of the toes
- Adduction of the toes
Movements - Toe movements - Flexion
Decrease of angle in a joint by bringing bones together
Movements - Toe movements - Extension
Increase of the angle in a joint by moving bones apart
Movements - Toe movements - Abduction
Lateral movement away from the midline of the foot
Movements - Toe movements - Adduction
Medial movement towards the midline of the foot
Muscles Origins, insertions and Actions - Gastrocnemius
Calf muscle
[Origin]
Posterior surface of the medial and lateral condyles of the femur
[Insertion]
Calcaneus via the calcaneal tendon
[Action]
- Plantarflexion of the ankle
- Flexion of the knee
Muscles Origins, insertions and Actions - Soleus
Under the calf Muscle
[Origin]
- Soleal line on the posterior tibia
- Proximal posterior surface of the fibula
[Insertion]
- Calcaneus vie the calcaneal tendon
[Action]
- Plantar flexion of the ankle
Muscles Origins, insertions and Actions - Plantaris
Has the longest tendon in the body
[Origin]
- Lateral condyle of the femur
[Insertion]
- Calcaneus via calcaneal tendon
[Action]
- Weak plantar flexion of the ankle
- Weak flexion of the knee
Muscles Origins, insertions and Actions - Peroneus longus
[Origin]
- Proximal two-thirds of lateral bibula
[Insertion]
- Base of first metatarsal & medial cuneiform
[Action]
- Eversion of the foot & assists in plantarflexion
Muscles Origins, insertions and Actions - Peroneus brevis
[Origin]
- Distal two-thirds of lateral fibula
[Insertion]
- Tuberosity of the 5th metatarsal
[Action]
- Eversion of the foot
- Assists in plantarflexion
Muscles Origins, insertions and Actions - Extensors of the ankle & toes
- Tibialis anterior
- Extensor digitorum longus
- Extensor hallucis longus
Muscles Origins, insertions and Actions - Extensors of the ankle & toes - Tibialis anterior
[Origin]
- Proximal anterolateral surface of the tibia
- Interosseous membrane
[Insertion]
- Medial cuneiform
- Base of first metatarsal
[Action]
- Dorsiflexion of ankle
- Inversion of the foot
Muscles Origins, insertions and Actions - Extensors of the ankle & toes - Extensor digitorum longus
[Origin]
- Proximal anterior shaft of fibula
- Interosseous membrane
[Insertion]
- Middle phalanxes of the second through fifth toes
- Distal phalanxes of the second through fifth toes
[Action]
- Extension of the second through fifth toes
- Dorsiflexion of the ankle
- Helps with eversion of the foot
Muscles Origins, insertions and Actions - Extensors of the ankle & toes - Extensor hallucis longus
[Origin]
- Middle anterior surface of the fibula
- Interosseous membrane
[Insertion]
- Distal phalanx of the first toe
[Action]
- Extension of the first (big) to,
- Dorsiflexion of the ankle
- Helps with inversion of the foot
Muscles Origins, insertions and Actions - Flexors of the ankle and toe -
- Tibialis posterior
- Flexor digitorum longus
- Flexor hallucis longus
Muscles Origins, insertions and Actions - Flexors of the ankle and toe - Tibialis posterior
[Origin]
- Proximal posterolateral surface of the tibia
- Interosseous membrane
[Insertion]
- Various tarsals
- Bases of 2nd through 4th metatarsals
[Action]
- Plantarflexion of the ankle
- Inversion of the foot
Muscles Origins, insertions and Actions - Flexors of the ankle and toe - Flexor digitorum longus
[Origin]
- Middle posterior surface of the tibia
[Insertion]
- Distal phalanxes of the 2nd through 5th toes
[Action]
- Flexion of the 2nd through 5th toes
- Weak plantarflexion of the ankle
- Inversion of the foot
Muscles Origins, insertions and Actions - Flexors of the ankle and toe - Flexor hallucis longus
[Origin]
- Middle half of posterior fibula
[Insertion]
- Distal phalanx of the 1st toes
[Action]
- Flexion of the 1st (big) toe
- Weak plantarflexion of the ankle
- Inversion of the foot
Muscles Origins, insertions and Actions - Muscles of the foot [MBLEx]
- Flexor and Extensor digitorum brevis
- Abductor hallucis
- Abductor digiti minimi
- Quadratus plantae
- Interossei
- Lumbricals