Ligamentous O's + I's

Question 1

MEDIAL COLLATERAL LIGAMENT OF THE KNEE

Answer 1

From medial epicondyle of femur/adductor tubercle (and medial meniscus - deep fibres) to medial aspect of tibia ~6cm below joint line

Tightens with knee ext, abd of tibia on femur (valgus), and outward rot. of tibia on femur

Prevents anterior displacement of tibia on femur

M/C MOI: valgus forces across medial joint line of knee

Question 2

LATERAL COLLATERAL LIGAMENT OF THE KNEE

Answer 2

From lateral epicondyle of femur (under biceps femoris tendon) –> fibular head

Tightens with extension, ADD of tibia on femur (varus), and outward rotation of tibia

M/C MOI: rare - result of varus force across the knee

Question 3

ANTERIOR CRUCIATE LIGAMENT OF THE KNEE

Answer 3

Direction: runs superiorly, posteriorly, and laterally from tibia to femur

From anterior intercondylar area of tibia to medial aspect of lateral femoral condyle

Tightens: ext of knee, fwd movement of tibia on femur, IR of tibia on femur.

M/C MOI: blow to lateral side of knee (valgus force to knee)

Question 4

POSTERIOR CRUCIATE LIGAMENT OF THE KNEE

Answer 4

Direction: forward, medially, upward from tibia to femur.

From extreme posterior intercondylar area of tibia to lateral aspect of medial femoral condyle.

Tightens: ext + flex (depending on fibres), posterior movement of tibia on femur, IR of tibia on femur

M/C MOI: forceful blow to anterior tibia while knee is flexed (falling on flexed knee, knee hitting dashboard in MVA)

Question 5

DELTOID LIGAMENT OF THE (medial) TALOCRURAL JOINT

Answer 5

4 sections: anterior tibiotalar, posterior tibiotalar, tibiocalcanean, tibionavicular (names indicate O + I)

May be affected with high ankle sprain

Question 6

ANTERIOR TALOFIBULAR LIGAMENT

Answer 6

M/C injured with lateral ankle sprain, M/C injured ankle ligament
Checks excess inversion

Question 7

CALCANEOFIBULAR LIGAMENT

Answer 7

2nd M/C injured in lateral ankle sprain
Checks maximum inversion

Question 8

POSTERIOR TALOFIBULAR LIGAMENT

Answer 8

Checks DF, ADD, medial rot + translation
Strongest ankle ligament. Rarely torn in isolation - requires considerable inversion stress to tear.

Question 9

ILEOFEMORAL LIGAMENT

Answer 9

Strongest ligament in the body
Prevents: excess ext + anterior translation

Question 10

ISCHIOFEMORAL LIGAMENT

Answer 10

Weakest of the 3 main hip ligaments
Stabilizes in ext

Question 11

PUBOFEMORAL LIGAMENT

Answer 11

Prevents excess ABD, limits ext.

Question 12

INGUINAL LIGAMENT

Answer 12

ASIS –> pubic tubercle

Question 13

ACROMIOCLAVICULAR LIGAMENT

Answer 13

restrictsposteriortranslation

Question 14

CORACOCLAVICULAR LIGAMENTS: CONOID + TRAPEZOID