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 / Conditions / Avasular necrosis Knee

Osteochondritis dissecans Or Avasular necrosis Knee

It is a condition where it breaks the articular cartilage and the underlying subchondral bone.

Symptoms –

  • Pain
  • Swelling
  • Locking of knee joint
  • Restricted movement
  • Crackling noise

Causes

  • The subchondral bone dies due to decreased blood supply to the subchondral bone and results in Avascular Necrosis of the bone.
  • This results in fragmentation ( Bone pieces or dissection ) of both cartilage and bone and forms loose bodies in the joint which further damages the knee joint.

Investigation

  1. X-ray
  2. MRI Scan

Treatment

  • Non-surgical treatment is rarely an option.
    • If advised also protected or non-weight bearing walk and immobilization.
  • Surgical treatment –
    • Arthroscopic drilling of intact lesions
    • Fixation of cartilage flap lesions with pins or screws,
    • PRP or Stem Cell therapy
  • If all the above treatment fails then Knee replacement.

Post surgery care

Two-stage process –

  1. Immobilization
    2. Rehab program