(Fig 5-C.08) Poor Outcome in Osteochondral Autograft Transplantation

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📌 Poor Outcome of Osteochondral Autograft Transplantation (OATS)

 

✅ Signs of Poor Tissue Integration

• Persistent edema-like marrow changes within subchondral bone beyond 18 months
• Subchondral cyst formation

 

✅ Depression and Proud Grafts

• Depression of the plug less than 1 mm can still result in good clinical outcomes
• Proud grafts can increase contact pressure, leading to degenerative changes

 

✅ Graft-Host Interface Fissures

• Fissures at the graft-host interface indicate poor outcomes
• Histologically, transplanted mature articular cartilage does not incorporate into adjacent cartilage

 

✅ Monitoring Subchondral Cysts and Bone Marrow Edema (BME)

• Formation of subchondral cysts
• Fluid-intense rim around the osseous part of the graft
• Persistent subchondral BME or newly developed BME may indicate poor graft incorporation
• Osteonecrosis is a rare complication of OATS

 

References

1. Semin Musculoskelet Radiol 2022;26:216–229
2. Clin Imaging. 2019 Nov-Dec;58:129-139
3. Semin Musculoskelet Radiol 2018;22:377–385

 

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#OATS, #OsteochondralAutograft, #CartilageTransplantation, #SubchondralCysts, #BoneMarrowEdema, #DegenerativeChanges, #Histology, #ClinicalOutcomes, #GraftIntegration, #Osteonecrosis