Flashcards in Anterior and Lateral Compartment of the Leg Deck (28)
Action of the anterior compartment of the leg muscles?
Dorsiflexors of the ankle and extensors of toe as well as inversion of the foot
What are the muscles of the anterior compartment of the leg?
tibialis anterior, extensor digitorum longus, extensor hallucis longus, fibularis tertius
Nerve supply of the muscles of the anterior compartment of the leg?
All deep fibular nerve
Proximal and distal attachments of the tibialis anterior muscle?
Proximal: lateral condyle of tibia and interosseous membrane
Distal: base of 1st metatarsal and medial cuneiform
Where do all muscles proximally attach to in anterior compartment of the leg?
tibia, fibula or interosseous membrane
Proximal and distal attachments of the extensor digitorium longus?
Proximal: lateral condyle of tibia, fibula and interosseous membrane
Distal: middle & distal phalanges of lateral 4 toes
Proximal and distal attachments of the extensor hallucis longus?
Proximal: fibula and interosseous membrane
Distal: distal phalanx of great toe
Proximal and distal attachments of fibulas tertius?
Proximal: fibula and interosseous membrane
Distal: Base of 5th metatarsal
The anterior and lateral compartments of the leg are separated from each other by the ______________
anterior intermuscular septum
Muscles of the lateral compartment of the leg?
fibularis longs and brevis
Where do both muscles of lateral compartment proximally attach to?
Distal attachment of fibulas longus?
Distal attachment of fibularis brevis?
Main action of fibularis muscles?
evert the foot
Nerve supply of fibularis muscles?
Superficial fibular nerve
What are the articulations of the knee joint?
3 articulations in total; 2 between the femur and the tibia, 1 between the femur and the patella
What bone does not take part in the knee joint?
What are the important ligaments of the knee helping to stabilise the joint?
the iliotibial tract, the tibial (medial) and fibular (lateral) collateral ligaments and the cruciate ligaments (anterior and posterior)
What are menisci in the knee joint?
(medial and lateral) which are crescentic discs of fibrocartilage that act as shock absorbers as well as assisting with stabilisation of the curved femoral condyles upon the relatively flatter tibial condyle
The menisci are thicker peripherally where they are attached to ____1_____.
The medial meniscus is also attached peripherally to the ______2______ which makes it more vulnerable to tearing in a knee injury. Such an injury could occur after a blow to the lateral side of the knee that distracts and twists the medial aspect of the joint. If the injury is such that the ACL is also ruptured, it is referred to as an ______3________
Both menisci are point anchored anteriorly and posteriorly by attachment to the ____4_______ The inner (deep) edges of the menisci are _____5______ to bone and very thin.
1) the fibrous capsule
2) tibial (medial) collateral ligament
3) “unhappy triad” knee injury.
4) tibial intercondylar area.
The ____1____ ligaments are named anterior and posterior according to their site of attachment to the intercondylar eminence of the tibia. They both attach between ____2_____, and are involved in maintaining joint stability.
2) tibia and femur
The anterior cruciate ligament (ACL) passes _____1______ to attach to the _____2______. It prevents _____3____ displacement of the tibia on the femur and ____4______ of the knee joint. The _____5____ test assesses the integrity of the ACL.
1) superiorly, laterally and posteriorly
2) lateral femoral condyle
5) anterior drawer
The posterior cruciate ligament (PCL) lies ____1____ to the ACL and passes _____2______ to attach to the _____3______. It prevents _____4____ displacement of the tibia on the femur and helps prevent ____5_____ of the joint. The integrity of this ligament is tested by the _____6_____ test.
2) superiorly and anteriorly
3) medial femoral condyle
6) posterior drawer
Unlike the subcutaneous bursae, the suprapatellar bursa is an extension of ______1_______
Its presence reduces friction on the _________ during knee movements.
Abnormal fluid within the knee joint (e.g. blood, inflammatory exudate or pus) can fill the suprapatellar bursa causing a swelling visible in the lower third of the anterior thigh.
This is clinically detected by the_____3____
1) synovial cavity
2) quadriceps tendon
3) massage test
What are bursa?
sac filled with lubricating fluid, located between tissues such as bone, muscle, tendons, and skin, that decreases rubbing, friction, and irritation.
Where does the common fibular nerve divide?
What does the superficial fibular nerve supply?
the muscle of the lateral compartment of the leg and the skin/fascia of the dorsum of the foot