Tibia Flashcards
What is the difference between the ligaments and the meniscus?
The meniscus is a cartilage
True or false?
The tibia also has a medial and lateral condyle that is connected, and is located at its distal end
False, it is separated by an intercondylar region at its proximal aspect
What attaches to the intracondylar region?
The ACL, PCL, lateral, and medial menisci.
What is located on the inferior of the condyles?
Roughening for muscles and ligaments and a tibial tuberosity.
How many lateral menisci attachments are there?
Two.
How many medial menisci attachment are there?
Two.
How many ACL and PCL attachment sites are at the intracondylar region.
One each.
True or false?
The lateral and medial condyle of tibia overhang the shaft!
True
What are the two outgrowths of the medial and lateral tibial condyle?
Tubercle of intercondylar eminence.
True or false?
The medial tibial condyle is larger than its lateral counterpart.
True, to accomodate the larger medial condyle of the femur.
The femur’s large condyle is to accomodate the adductor tubercles.
True or false?
The articular surface of both condyles are concave!
True
What is the tibial plateau?
The superior surface of the tibia, the name “plateau” originates from its fluctuative nature.
What does the nonarticular posterior medial surface of the tibia contain?
A horizontal groove that contains the semimembranous muscle.
What structure does the underside of the lateral condyle contain?
An articular circular facet for articulation with the fibula.
What is a big surface used for articulation of ligaments right below the condyle?
The tibial tuberosity.
Is the tibial tuberosity anterior or posterior?
Anterior
To think about it, the palpability of the tibial tuberosity kinda gives it away that it is anterior.
True or false?
The intercondylar eminence tubercle is the attachement of the patellar ligament!
False, it is the tibial tuberosity.
What are the 3 surfaces of the tibia?
The posterior, medial, and lateral.
PML
What are the 3 borders of tibia?
The anterior, interosseus, and medial border.
AIOM
What are the characteristics of the medial surface of tibia?
It is large, smooth, and palpable with a ridge for the combined attachment of sartorius, gracilis, and and semintendinosus muscles
It is located between the anterior and median border
What are the characteristics of the posterior surface?
Widest, contains the soleus line.
It is located between the medial and interosseus border, and is sort of analogous to the linea aspera of the femur,
What is the characteristic of the lateral surface?
That it doesn’t have any characteristic besides being smooth.
The lateral surface is located between the interosseus border and the anterior border.
Where does the anterior border descend from?
Look for anterior region structures!
The tibial tuberosity.
Where does the medial border descend from?
The anterior end of the posterior groove of the medial tibial condyle.
Where does the interosseus border descend from?
Anteroinferior of the circular facet of fibula
Interosseus means between bone, look for a border between the fibula and tibia.
True or false?
The shaft of the tibia expands superiorly and inferiorly!
True.
The expansion is a form of strengthener for both the knee joint and the ankle joint.
What is a rectangular box formed at the distal shaft of the tibia?
The medial malleolus
What does the medial malleolus’ lower part articulate with?
The lower part of the medial malleolus articulates with the talus.
The talus is the first and superiormost tarsal bone.
What is a groove located near the posterior of the medial malleolus?
The vertical groove that contains the tibialis posterior muscle.
What is the lateral surface of the distal tibial shaft marked with?
It is marked with the fibular notch.
The fibular notch attaches to the tibia and is strengthtened by a thickening of the interosseus membrane.
