Ankle Flashcards
Superior Tibiofibular Joint
type
movement type
resting position
concave/convex rule
degrees of freedom, motion
nerve supply
plane synovial joint
gliding/sliding
resting position: 25 deg flexion, 10 deg plantarflexion
concave fibula on convex tibia –same direction
2 degrees freedom: cranial/caudal, anterior/poterior
common peroneal nerve
Superior Tibiofibular Joint Ligaments
- anterior tibiofibular ligament
- posterior tibiofibular ligament
- popliteus muscle
- interosseus membrane
Superior Tibiofibular Jt mobilizations
- anterior glide –increase DF
2. posterior glide –increase PF
Inferior Tibiofibular Joint
Type
Concave/convex rules
nerve
ligament
degree freedom
movement
resting position
closed packed
capsular pattern
nerve
syndosmosis (fibrous union)
convex fibula moves on concave tibia–opposite direction
nerve: peroneal nerve, tibial nerve
ligament:
1. crural tibiofibular interosseus ligament
2. anterior tibialfibular ligament
3. posterior tibialfibular ligament
4. inferior transverse ligament
5. interosseus membrane
degree freedom 2
movement: cranial/caudal, ventral/dorsal, medial and lateral splay, lateral rotation around the fibula
resting position: 10 degrees PF, midway inversion and eversion
closed packed-not, synovial
capsular pattern: not, synovial
nerve: deep peroneal and tibial nerve
Motion of Fibula in
- dorsiflexion
- plantarflexion
- DF: fibula abducts, externally rotates, moves laterally, glides posteriorly and superiorly
- PF: fibula adducts, IR, glides anteriorly and inferiorly
Motion of fibula in
- subtalar supination
- subtalar pronation
- supination: distal and posterior
2. pronation: proximal and anterior
Mobilizations at Inferior Tibialfibular Joint
- anterior glide–plantarflexion
- posterior glide–dorsiflexion
- cranial glide–DF and everison
- caudal glide-PF and inversion
Anterior Glide Superior TIbiofibular Joint
- Position: prone, knee flexed, ankle on pillow with 10 degrees PF
- Stabilize: medial tibia
- Mobilize: heel of hand posterior fibular head
- Direction: posterior–>anterior
Indication: DF
concave fibula on convex tibia –same direction
Posterior Glide Superior Tbiofibular Joint
- Position: Supine, knee flexed, foot on bed
- Stabilize: sit on foot, medial tibia one hand
- mobilize: heel of hand on anterior fibula head
- direction: anterior –> posterior
- indication: increase PF
concave fibula on convex tibia –same direction
Inferior Tibiofibular Joint: Anterior Glide
- Position: pt prone, leg on wedge, ankle PF 10 degrees, lateral malleolus extends off side of wedge
- Stabilize: medial side of tibia
- Mobilize: heel of hand on posterior lateral malleolus
- Direction: Posterior–>anterior
- Indication: increase PF
convex fibula moves on concave tibia–opposite direction
Inferior Tibiofibular Joint: Posterior Glide
- Position: pt supine, lateral malleolus off plinth, ankle PF 10 degrees
- Stabilize: medial side of tibia
- Mobilize: heel of hand on posterior lateral malleolus
- Direction: anterior–>posterior
- Indication: increase DF
convex fibula moves on concave tibia–opposite direction
Inferior Tibiofibular Joint: Cranial and Caudal Glide: Supine
- Position: patient side lie with medial surface of foot on plinth
- Stabilize: foot or distal leg against the table
- Mobilize: heel of mobilizing hand on the inferior surface of the lateral malleolus
- Direction:
cranial or caudal - Indication:
cranial: increases eversion and DF
Caudad: increases inversion and PF
convex fibula moves on concave tibia–opposite direction
Inferior Tibiofibular Joint: Cranial and Caudal Glide: Sidelie
- Position: supine
- Stabilize/mobilize: one hand holds the foot and calcaneus
and one hand holds lateral malleolus - Direction: move foot into eversion and get superior glide of fibula
move foot into inversion and get caudad/inferior glide of fibula
- Indication:
convex fibula moves on concave tibia–opposite direction
Plantarflexion/dorsiflexion
x axis
occurs in the saggital plane along a coronal axis
dorsiflexion decreases teh angle between the dorsum of the foot and leg
at the toes it is called extension
plantarflexion is equivalent of curling toes
Inversion/Eversion
z axis frontal plane (longitudinal xis)
Inversion: plantar surface of foot moves closer to midline
eversion: plantar surface of foot moves away from midline
talar tilt
pronation/supination
SUBTALAR JOINT
oblique axis
made up of composite motions
at an axis that lies at an angle to the axes of the cardinal motions
Non WB pronation: DF, Eversion, Abduction
WB pronation: IR tibia
Non WB supination: PF, adduction, inverison
WB supination: ER tibia
Valgs/Varus (calcaneal)
valgus increases the medial angle of the joint
varus decreases the medial angle of the joint
3 sections of joints of the ankle/foot complex
- hindfoot: (rearfoot) talus and calcaneus
- midfoot: (transverse tarsal) navicular, cuboid, 3 cuneiform bones
- forefoot: metatarsals and phalanges
Talocrural Joint
bones
(ankle mortis) articulation between the distal tibia/fibula with the talus body
Talocrural Joint
Type
Concave/convex rules
nerve
ligament
degree freedom
movement
resting position
closed packed
capsular pattern
nerve
synovial hinge joint
concave/convex: the tibia and fibula part is all concave, the talus is convex (move convex talus on concave tib/fib)
resting position: 10 degrees PF, midway between supination and pronation
closed packed: maximal DF
capsular pattern: PF more limited than DF
Degrees of freedom: 1: PF/DF
Ligaments: deltoid (posterior tibiotalar ligament, tibiocalcaneal ligament, anterior tibionavicular ligament), lateral collateral ligament (anterior tibiofibular ligament, calcaneofibular liament, posterior tibialfibular ligament)
Ligaments Talocrural Joint
1. MEDIAL: Deltoid ligament (medial collateral ligament) --consists of superficial and deep fibers: checks valgus and limit end range of PF and DF
A– superficial deltoid ligament–check valgus forces and resist talus abduction
- ———–> posterior tibiotalar ligament (medial mallelus to talus)
- ———–> tibiocalcaneal ligament (medial malleolus to calcaneus)
- ———–> anterior tibialnavicular ligament: medial malleolus to navicular tuberosity
B–Deep Deltoid Ligament: resist valgus forces and talus abduction:
————> anterior tibiotalar ligament: medial malleolus (inf and posterior) to talus (medial surface)
- LATERAL
Collateral Ligament: check varus forces, help limit end range of PF, DF
———–> anterior talofibular ligament [checks plantarflexion]
———–> calcaneofibular ligament [checkes inversion]
———–> posterior tibialfibular ligament [checks dorsiflexion]
most often sprained ligament at the talocrural joint
anterior talofibular ligament
anterior border fibula –> lateral talus
stability against inversion speain
checks plantarflexion