Lower leg joints Flashcards
What is the membrane that connects the tibia and the fibula?
The interosseus membrane.
What are the apertures of the interossues membrane?
The superior and inferior aperture.
What is the line of definition for abduction and adduction for the toes.
The second digit.
What does the ankle joint consist of?
The talus, tibia, and fibula.
What is the roof, medial, and lateral aspect of the socket created in the knee joints?
Roof: tibia
Medial: medial malleolus of the tibia
Lateral: lateral malleolus of the fibula
In which position is the ankle joint more stable?
Dorsoflexion since the articular surface of the talus is wider anteriorly.
What strengthens the ankle joint?
Medial (deltoid) and lateral ligaments.
What is the division of the medial ligament of the ankle?
The tibionavicular, tibiocalcaneal, posterior and anterior tibiotalar ligaments.
What does the tibionavicular ligament originate from?
The medial malleolus
All medial ligaments originate from the medial malleolus.
What does the tibionavicular ligament attach to?
The navicular tuberosity and the spring ligament.
What does the tibiocalcaneal ligament attach to?
The sustentaculum tali.
What is the origin of the tibiocalcaneal ligament?
The medial malleolus.
What does the posterior tibiotalar ligament attach to?
The medial tubercle of the talus.
What does the anterior tibiotalar ligament attach to?
Medial surface of the talus.
True or false?
The anterior tibiotalar ligament is the outermost ligament!
False, it is located deep to the tibionavicular and tibiocalcaneal parts of the deltoid ligament.
What are the 3 lateral ligaments?
The anterior talofibular ligament, the posterior talofibular ligament, and the talocalcaneal ligament.
What forms the subtalar joint?
The posterior facet of:
1) the inferior of the talus.
2) the superior of the calcaneus.
Why is the subtalar joint considered a joint and not just a space?
It has both a synovial and fibrous membrane.
What does the subtalar joint support?
Gliding and rotation.
GR IE? (read: geer ye?), seolah-olah dia ini joint padahal aslie kita ngira ngga. (it sound retarded)
What ligaments support the subtalar joint?
The lateral, medial, posterior, and interosseus talocalcaneal ligaments supports the joint.
LMP - IO
What is a complex joint involved in the foot?
The talocalcaneonavicular joint.
What forms the talocalcaneonavicular joint?
The anterior and middle facets of the:
1. Inferior talus
2. Superior calcaneus
What is the supported movement of TCN joint?
Gliding and rotation.
Involved in inversion, eversion, supination, and pronation.
What reinforces the talocalcaneonavicular joint?
1) Superiorly by the interosseus talonavicular ligament
2) Inferiorly by the calcaneonavicular (spring) ligament.
3) Posteriorly by the talocalcaneal ligament.
4) Laterally by the bifurcate ligament (calcaneocuboid and calcaneonavicular ligament).
What forms the calcaneocuboid joint?
The anterior calcaneal facet and the posterior cuboid facet.
What movement is supported by the calcaneocuboid joint?
Sliding and rotation.
SR IE (read: sorry ye) involved with inversion and eversion.
What ligament strengthens the calcaneocuboid joint?
The bifurcate ligament, the long plantar ligament, the short plantar ligament (calcaneocuboid).
What is the origin of the long plantar ligament?
In between the calcaneal tuberosity and tubercle.
What is the attachment of the long plantar ligament?
Inferior surface of navicular tubercle.
Behind the fibularis longus tendon.
True or false?
The tarsometatarsal joint of the great toe and the medial cuneiform allows for greater motion than other joints.
Yes, particularly flexion, extension, and rotation.
What does the metatarsophalangeal joint allow?
Extension, flexion, limited adduction, abduction, rotation, and circumduction.
What is a bunion?
A significant bone protrubance signifying the tarsometatarsal joint.
What are some bunion disorders?
Hallux valgus (thumb), Tailor’s bunion (little), dorsal bunion.
What are the ligaments that connect the dorsal aspect of metatarsals?
Deep transverse metatarsal ligaments.
