Practical Class 5: Leg Flashcards
What is acute osteomyelitis?
Infection and inflammation of the bone or bone marrow.
What is a compound injury?
In injury involving an open fracture.
What are the two foramina found in the introsseous membrane in the leg?
- Aperture for anterior tibial vessels
- Aperture for perforating branch of fibular artery
What is the function of a retinaculum?
A band around tendons that holds them in place. It is not part of any muscle. Its function is mostly to stabilize a tendon.
What are the attachments of tibialis anterior?
Origin: Lateral surface of tibia and adjacent interosseous membrane
Insertion: Medial and inferior surfaces of medial cuneiform and adjacent surfaces on base of metatarsal I
What movements may be produced at the ankle joint by contraction of tibialis anterior?
Dorsiflexion of foot at ankle joint.
Does tibialis anterior assist in inversion or eversion of the foot?
Inversion
What are the basic differences between extrinsic and intrinsic muscles?
Extrinsic muscles - have origins in the leg but insertions in the foot.
Intrinsic - have both their origins and insertions in the foot
What is the function of fibularis tertius?
Works with the extensor digitorum longus to dorsiflex, evert and abduct the foot.
From which artery does the anterior tibial artery arise?
The popliteal artery
How does the anterior tibial artery get from the posterior to the anterior compartment of the leg?
A hiatus in the introsseous membrane.
Which nerve innervates the anterior compartment of the leg.
Deep fibular nerve
Name the two muscles in the lateral compartment of the leg?
Fibularis longus
Fibularis brevis
Which bony prominence do the tendons of the fibular muscles pass posteriorly?
Lateral malleolus
What is the insertion of the fibularis longus?
Plantar posterolateral aspect of medial cuneiform and lateral side of 1st metatarsal base.