Anterior Cruciate Knee ligament injury

Question 1

Articulating bones

Answer 1

• Femour
• Tibia
• patella

Question 1

general information

Answer 1

grade 1-3

The ACL provides 85% of restraining force of anterior translation.

Question 2

Muscles

Answer 2

• Vastus lateralis.
• Vastus medialis.
• Vastus intermedius
• Rectus femoris.
• gastrocnemius

Question 3

Ligaments

Answer 3

• MCL (medial collateral ligament) on the inside
  -LCL (lateral collateral ligament) on the outside.

they control the side to side movement and brace against unusual movement.

• ACL (anterior cruciate ligament)
  -PCL (posterior cruciate ligament)

they form an X to control the forward and backwards motion of the knee.

Question 4

Mechanism of injury

Answer 4

grade 1:
the ligament is mildly damaged, it has been stretched but can still help stabilise the joint.

grade 2:
the ligament is stretch to the point where it is loose. this is a partial tear.

grade 3:
a complete tear of the ligament, the ligament is torn in half or has come off the bone king the knee joint unstable.

most tears are complete or near complete

Causes:
- change of direction rapidly
- stopping suddenly
- slowing down when running
- landing from a jump incorrectly
- direct contact or collision eg, football tackle

symptoms:
- pain and swelling
- loss of full range of motion
- tenderness along the joint line
- discomfort when walking

Question 5

Predisposing factors

Answer 5

female athletes are more likely to injure their ACL

Question 6

Rehabilitation

Answer 6

recovery time is usually 6-9 months

exercises:

Stretching: