Knee Injury Prevention

Mary Lloyd Ireland, MD

Professor

Dept. of Orthopaedic Surgery & Sports Medicine

University of Kentucky - Lexington, Kentucky

Donate:  IrelandFoundation.org

 

0:27

ACL Injury Prevention

Mental preparation

-Physical training

-Coaches cries

 *Land

  1. Softly

  2. Light as a feather

  3. Like a spring

 *Get Down

  More bent hip/bent knee position

1:08

Basketball

 

1:25

VROOM . . .

Valgus

Rotation

Out

Of control

Movement

It takes 70 milliseconds to tear the ACL

 

1:49

Tire with a sudden blowout is like - a mop-end tear of ACL

 

2:12

Observation of ACL Injury Patterns

-Allow us to develop hypotheses in the lab for computer modeling

- Bring lab studies back out to the training room

- Joint position and muscle activation is critical to knee stability

- Strength is not as important as timing of activation

*Best: hamstrings firing on flexed knee-hip

*Worst: quadriceps dominance in extended hip-knee

 

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What I Have Observed

Mechanism of Injury

-High risk vs. low risk landing position

 

3:54

Ireland, ML.  Anterior Cruciate Injury in Female Athletes: Epidemiology, in J Athletic Training 1999;34(2), 150-154.

 

4:21

Knee: Cone of Stability

 

4:26

NonContact ACL Tear

-Anterior Dislocation

-Weight Bearing Pivot Shift

 

4:48

Basketball: non-contact, unexpected, not thinking

 

5:10

Position of No Return

Is it really knee valgus?

-Seen from frontal plane, YES, but NOT from sagittal plane

-Injury – Landing Pivot Shift

-Knee: Anterior subluxation of tibia

-Hip: Internal Rotation and Adduction

Femoral rotation

-first internal, then external

Anterior tibial translation =  “valgus collapse”

 

5:42

Normal example

 

6:12

Alignment

Proximal control / Core stability

Position of Safety vs. Position of no return

 

6:34

Mini Squats

 

Good - Bad positioning

Hamstring strain vs ACL Tear

 

7:38

Injury Prevention-ACL TearSimple as:  ABC’s

Agility

Balance

Core

Strength

 

8:14

Landing is EVERYTHING!

 

8:30

Articles by Mary Lloyd Ireland

-Noncontact ACL Injuries and the Female Athlete

PDF Download Link - goo.gl/zHCA9Y

-The Female Athlete: Entitled to Compete, Predetermined to Tear Her Anterior Cruciate Ligament?

PDF Download Link - goo.gl/HgtavQ

 

8:55

Donate to UKY

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9:06

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IrelandFoundation.org

www.marylloydireland.com