1 / 20

Anatomy of and Injuries to the Knee Joint Complex

Anatomy of and Injuries to the Knee Joint Complex. Riann M. Palmieri-Smith, Ph.D., ATC Neuromuscular Research Laboratory Division of Kinesiology University of Michigan. What do the knees do?. Simple joint that is required to do a complicated job… Mobility/Stability Weight-bearing.

milagro
Download Presentation

Anatomy of and Injuries to the Knee Joint Complex

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Anatomy of and Injuries to the Knee Joint Complex Riann M. Palmieri-Smith, Ph.D., ATC Neuromuscular Research Laboratory Division of Kinesiology University of Michigan

  2. What do the knees do? • Simple joint that is required to do a complicated job… • Mobility/Stability • Weight-bearing

  3. The Knee Joint Complex • Made up of 3 bones • Femur • Tibia • Patella • The knee is really two joints • Patello-femoral joint • Tibio-femoral joint

  4. Parts of the Knee • Articular Cartilage • Cover the ends of the 3 bones • Menisci • Separate the upper and lower bones of the knee

  5. Parts of the Knee • Ligaments • ACL • PCL • MCL • LCL • Tendons • Quadriceps • Patellar • Muscles • Quadriceps • Hamstrings

  6. What causes knee problems? • Disease • A number of diseases can affect the knee • Arthritis • Injury • Acute trauma • Chronic injury • Lifetime wear and tear

  7. Anterior Cruciate Ligament Injury • One of the most commonly injured knee ligaments • Gender difference in injury rates • Injury Mechanism: • Noncontact • Contact

  8. Anterior Cruciate Ligament Injury • What will my knee feel like: • “Popping” sound at the time of injury • Rapid Swelling • Pain • Instability • Associated with a quicker onset of osteoarthritis

  9. Posterior Cruciate Ligament Injury • Less common than ACL tears • Primary stabilizer of the knee • Injury Mechanism: • Fall on a bent knee • MVA

  10. Posterior Cruciate Ligament Injury • What will my knee feel like: • Mild to Moderate Pain in the back of the knee • Swelling • Knee Instability

  11. Collateral Ligament Injury • MCL tears more common • Injury Mechanism: • Direct Blow • When the lower leg is forced sideways, either toward the other knee or away from the other knee • Graded by severity

  12. Collateral Ligament Injury • What will my knee feel like: • Pain over the ligament • Swelling • Instability

  13. Articular Cartilage Injuries • Can be isolated or occur in conjunction with another injury • Injury mechanism: Sudden twist/pivot or forceful impact. • Damage is graded from minor to severe

  14. Articular Cartilage Injuries • What will my knee feel like: • Vague knee pain & swelling • Stiffness • Locking of the knee (loose body) • Difficult to diagnose • Accelerate the onset of osteoarthritis

  15. Meniscal Injuries • Can be isolated or occur in conjunction with another injury • Injury mechanism: • Vulnerable to twist & compression • Trivial trauma (older)

  16. Meniscal Injuries • What will my knee feel like: • Acute: • Swelling • Pain • Locks/catches with movement • Degenerative: • Repeated episodes of swelling • Pain • Locking/catching

  17. Osteoarthritis • Most common type of arthritis • Affects over 10 million Americans • Chronic condition characterized by the breakdown of cartilage

  18. Osteoarthritis • Progressive disease • Cartilage loses elasticity • Wear of cartilage causes changes to underlying bone • Bits of bone or cartilage float loosely • The joint lining becomes inflamed due to cartilage breakdown

  19. Osteoarthritis • Risk factors for OA: • Age • Obesity • Injury or Overuse • Genetics • Muscle Weakness • Other Diseases • What will my knee feel like: • Pain when moving the knee • Joint stiffness • Grating or catching when moving the knee • Pain when walking up and down stairs or getting up from a chair • Weakened large thigh muscles • Deterioration of coordination, posture and walking due to pain and stiffness.

  20. Inquisitive minds want to know… • What can I do if I suffer from a knee injury or disease? • What can I do to prevent knee injury or disease? • Dr. Wojtys can you help us out???

More Related