[When is cartilage repair successful?]

Area of Science:

• Orthopedics
• Radiology
• Regenerative Medicine

Background:

• Focal cartilage lesions lead to long-term disability and morbidity.
• Standardized evaluation of cartilage repair is essential for assessing treatment success and long-term outcomes.

Purpose of the Study:

• To provide an overview of cartilage repair procedures.
• To highlight key imaging characteristics for evaluating cartilage repair success.
• To identify common complications and pitfalls in postoperative imaging.

Main Methods:

• Review of different cartilage repair procedures.
• Discussion of essential imaging features for assessing repair tissue integration and defect filling.
• Identification of potential complications such as osteophytes, subchondral defects, and effusion.

Main Results:

• Successful cartilage repair is characterized by complete, non-hypertrophic defect filling and integration with native cartilage.
• Repair tissue should exhibit isointense signal compared to native cartilage on MRI after several months.
• Common complications include osteophytes, subchondral defects, cysts, adhesions, and bone marrow edema.

Conclusions:

• Standardized radiological evaluation is crucial for monitoring cartilage repair progression and failure.
• Interpretation of postoperative imaging must consider the specific repair method used.
• Early identification of complications through follow-up imaging is vital for patient management.