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Posterior cruciate ligament injury

Anatomy & Mechanics:

  • orientated vertically

  • blends with post horn lateral meniscus

  • prevents post translation of tibia on femur & prevents hyperextension

  • Secondary constraints are: posterolateral complex & MCL.

  • Twice as strong as ACL:

    1. larger cross-sectional area

    2. higher tensile strength

    3. located closer to the central axis of the knee joint

Mechanism of Injury:

  • Direct blow causing posterior displacement of tibia in a flexed knee

  • Hyperextension injury

Site of Injury:

  • Femoral avulsions in 25%

  • Tibial Avulsions in 25%

  • Midsubstance tears in 50%

Associated Injuries:

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Total Knee Replacement
Anterior Cruciate Ligament Injuries
Knee - Osteotomies
Knee Anatomy
Knee Arthrodesis
Knee Ligament - Sectioning Studies
Knee Ligament Injuries
Knee Mechanics
Lateral Meniscus Syndrome:
Medial Meniscus Syndrome
Meniscal Injuries
Meniscal Special Tests
Osteochondritis dissecans
Patellofemoral Disorders
Patello-Femoral Instability
Posterior cruciate ligament injury
Spontaneous Osteonecrosis of the Kn...
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