You are here

Osteochondral Autograft 29866


synonyms: OATS, mosiacplasty, osteoarticular autograft transfer


OATs Indications

  • <3cm2 Grade IV chondral lesion

OATs Contraindications

  • Limb malalignment
  • Arthritic changes

OATs Alternatives

OATs Planning / Special Considerations

  • Associated malalignmnet must be corrected before any cartilage restoration procedure. Most isolated lesions involve the MFC and can be associated with varus alignment. Concomitant HTOis indicated.
  • Arthrex Oats system or Mitex COR system

OATs Technique

  • Perform diagnostic knee arthroscopy.
  • Typical harvest site is the intercondylar notch and the periphery of the lateral trochlea just proximal to the sulcus terminalis.

OATs Complications

  • Hemarthrosis
  • Continued symptoms

OATs Follow-up care

  • Post-op: 6hrs/day CPM, NWB x6wks unless lesion treated was patellofemoral.
  • 7-10 Days: Wound check, continue CPM, NWB
  • 6 Weeks: Discontinue CPM, advance to full weight bearing
  • 3 Months: Resume all normal ADLs.
  • 6 Months: Gradually begin running / sport specific rehab.
  • 1Yr: Return to sport / full duty. Return to high-impact activites after treatment of large defects is not recommened.

OATs Outcomes

  • 92% good/excellent result for femoral condyles, 87% tibia, 79% patellofemoral, 94% talar dome (Hangody L, JBJS Am, 2003;85(sup2):25).

OATs Review References


The information on this website is intended for orthopaedic surgeons.  It is not intended for the general public. The information on this website may not be complete or accurate.  The eORIF website is not an authoritative reference for orthopaedic surgery or medicine and does not represent the "standard of care".  While the information on this site is about health care issues and sports medicine, it is not medical advice. People seeking specific medical advice or assistance should contact a board certified physician.  See Site Terms / Full Disclaimer