MT1 anatomy Flashcards
What is the main ‘ankle joint’ called?
Tibiotalar joint (Talocrural joint)
It is a hinge joint allowing one degree of movement.
What motions are allowed by the Tibiotalar joint?
Dorsiflexion, Plantar flexion
These movements occur in the sagittal plane.
Where is the Subtalar joint located?
Between talus and calcaneus
This joint allows for inversion and eversion movements.
What type of joints are the Tarsometatarsal (TMT) joints?
Plane joints
These joints allow for gliding movements between the tarsals and metatarsals.
What joints are found in the forefoot?
Metatarsophalangeal (MTP) joints, Interphalangeal joints (IP, PIP, DIP)
MTP joints connect metatarsals to phalanges, while IP joints are between phalanges.
What ligament prevents anterior movement of the talocrural joint?
ATFL (Anterior Talofibular Ligament)
It is one of the lateral ligaments that stabilize the joint.
What is the function of the Deltoid Ligament?
Stabilizes the medial side of the ankle
It has anterior, middle, and posterior parts.
What does the AITFL stand for?
Anterior Inferior Tibiofibular Ligament
It stabilizes the tibia and fibula.
Which muscles are responsible for dorsiflexion?
- Tibialis anterior
- Extensor hallucis longus (EHL)
- Extensor digitorum longus (EDL)
- Peroneus tertius (weak)
These muscles work to lift the foot upwards.
List the primary muscles involved in plantar flexion.
- Gastrocnemius
- Soleus
- Flexor digitorum longus (FDL)
- Flexor hallucis longus (FHL)
- Tibialis posterior
- Peroneus longus
- Peroneus brevis
These muscles allow the foot to point downwards.
Which muscles are involved in inversion?
- Tibialis anterior
- Tibialis posterior
- Flexor digitorum longus (FDL)
- Flexor hallucis longus (FHL)
- Extensor hallucis longus (EHL) (weak)
Inversion moves the sole of the foot inward.
What muscles are responsible for eversion?
- Extensor digitorum longus (EDL)
- Peroneus longus
- Peroneus brevis
- Peroneus tertius
Eversion moves the sole of the foot outward.
What muscles extend the toes?
- EHL (1st toe)
- EDL (toes 2-5)
Toe extension is primarily facilitated by these muscles.
Which muscles flex the toes?
- FHL (1st toe)
- FDL (toes 2-5)
These muscles allow bending of the toes.
what are the bones at the head of the 1st metatarsal (plantar surface)
sesamoid bones
location and function of the interosseus membrane
something about anterior superior posterior superiror anterior inferior posterior inferior tf ligaments
