MES 3 (Knee)

Lateral Meniscal injury

• tibial rotation when the knee is partially flexed during weight bearing

• squatting, during full flexion with rotation

• sudden pop and anterior knee pain with posterolateral joint line pain and instability of the knee

• impact to the front of the tibia with the knee flexed (dashboard injury)

Answer explanation

✓ Medial Meniscal Injury – associated with cutting maneuvers and occurs with a tibial rotation when the knee is partially flexed during weight bearing

✓ Lateral Meniscal Injury – typically occurs in squatting, during full flexion

✓ ACL injury - sudden pop and anterior knee pain with posterolateral joint line pain and instability of the knee

✓ PCL injury - impact to the front of the tibia with the knee flexed (dashboard injury).

Medial Meniscal injury

• tibial rotation when the knee is partially flexed during weight bearing

• squatting, during full flexion with rotation

• sudden pop and anterior knee pain with posterolateral joint line pain and instability of the knee

• impact to the front of the tibia with the knee flexed (dashboard injury)

Answer explanation

✓ Medial Meniscal Injury – associated with cutting maneuvers and occurs with a tibial rotation when the knee is partially flexed during weight bearing

✓ Lateral Meniscal Injury – typically occurs in squatting, during full flexion

✓ ACL injury - sudden pop and anterior knee pain with posterolateral joint line pain and instability of the knee

✓ PCL injury - impact to the front of the tibia with the knee flexed (dashboard injury).

ACL injury

• tibial rotation when the knee is partially flexed during weight bearing

• squatting, during full flexion with rotation

• sudden pop and anterior knee pain with posterolateral joint line pain and instability of the knee

• impact to the front of the tibia with the knee flexed (dashboard injury)

Answer explanation

✓ Medial Meniscal Injury – associated with cutting maneuvers and occurs with a tibial rotation when the knee is partially flexed during weight bearing

✓ Lateral Meniscal Injury – typically occurs in squatting, during full flexion

✓ ACL injury - sudden pop and anterior knee pain with posterolateral joint line pain and instability of the knee

✓ PCL injury - impact to the front of the tibia with the knee flexed (dashboard injury).

PCL injury

• tibial rotation when the knee is partially flexed during weight bearing

• squatting, during full flexion with rotation

• sudden pop and anterior knee pain with posterolateral joint line pain and instability of the knee

• impact to the front of the tibia with the knee flexed (dashboard injury)

Answer explanation

✓ Medial Meniscal Injury – associated with cutting maneuvers and occurs with a tibial rotation when the knee is partially flexed during weight bearing

✓ Lateral Meniscal Injury – typically occurs in squatting, during full flexion

✓ ACL injury - sudden pop and anterior knee pain withposterolateral joint line pain and instability of the knee

✓ PCL injury - impact to the front of the tibia with the knee flexed (dashboard injury).

occur with valgus stress and external rotation and can cause knee stiffness

• Acute Meniscal Tears

• Posterior Horn Tears

• MCL tears

• ACL Tear

Answer explanation

softening of the patellar articular cartilage due to cartilage degeneration

• Acute Meniscal Tears

• Chondromalacia Patella

• MCL tears

• Plica syndrome

• Iliotibial Band syndrome

Answer explanation

joint pain and irritation, synovial effusion, and a buckling sensation and there is presence of a loose body may cause locking.

• Acute Meniscal Tears

• Chondromalacia Patella

• MCL tears

• Plica syndrome

• Osteochondritis Dissecans

Answer explanation

- Pain with downhill running and excessive pronation.

- Stress to the popliteus is caused by forward femoral displacement.

- Point tenderness anterior to the fibular collateral ligament.

• Popliteus Tendonitis

• Chondromalacia Patella

• MCL tears

• Plica syndrome

• Osteochondritis Dissecans

Answer explanation

May require a medial heel wedge

- Pain with downhill running and excessive pronation.

- Stress to the popliteus is caused by forward femoral displacement.

- Point tenderness anterior to the fibular collateral ligament.

• Popliteus Tendonitis

• Chondromalacia Patella

• Chronic Exertional Compartment Syndrome (CECS)

• Plica syndrome

• Osteochondritis Dissecans

Answer explanation

- Nerve impingement can result from high intracompartmental pressures during or after exercise

- Intractable pain and sometimes sensory hypesthesia distal to the involved compartment [usually top of foot (and median distribution in the hand)] are the most important early symptoms.

• Popliteus Tendonitis

• Chondromalacia Patella

• Chronic Exertional Compartment Syndrome (CECS)

• Plica syndrome

• Acute Compartment Syndrom

Answer explanation

- The characteristics are pain, paresthesia, and paralysis (3 Ps).

• In ACS muscle necrosis may develop in 4–8 hours.

• - When diagnosis is made, a surgical fasciotomy of the compartment is essential. The wound is left open with delayed closure or skin grafting performed after the edema subsides.

• - Without immediate treatment, ACS may result in permanent loss of function and tissue damage. The muscles necrose, scar, and shorten. Fingers and toes often claw and have little motion