A new analysis, conducted by Dr. Okoroha’s colleagues examined outcomes related to meniscal repair during revision ACL reconstruction. Their research highlights an important takeaway, while new techniques continue to evolve, long-term data remains critical in determining the best approach. Here’s what they found.
https://journals.sagepub.com/doi/full/10.1177/03635465251387333
Anterior cruciate ligament (ACL) injuries frequently occur alongside meniscus tears, creating a complex injury that can significantly impact knee function, stability, and long-term joint health. While meniscal repair is commonly performed during primary ACL reconstruction, less is known about how well these repairs hold up when performed during revision ACL reconstruction.
A recent study from the Multicenter ACL Revision Study (MARS) cohort evaluated the long-term outcomes of meniscal repairs performed during revision ACL reconstruction. The findings provide encouraging evidence that preserving the meniscus remains an effective treatment strategy, even in patients undergoing a second ACL surgery.
Understanding the Importance of Meniscal Preservation
The meniscus serves as one of the knee's most important protective structures. Acting as a shock absorber, it helps distribute forces across the joint, improves stability, and protects the cartilage that lines the ends of the bones.
When a meniscus is removed or significantly damaged, increased pressure is placed on the cartilage surfaces of the knee. Over time, this can accelerate cartilage wear and contribute to the development of arthritis. Because of these long-term consequences, orthopedic surgeons often prioritize repairing the meniscus whenever possible rather than removing damaged tissue.
This approach is particularly important in patients undergoing revision ACL reconstruction, where preserving every possible component of knee function becomes critical for long-term success.
Study Overview
Researchers evaluated patients enrolled in the MARS cohort who underwent revision ACL reconstruction along with a concurrent primary meniscal repair.
The study included:
- 221 patients undergoing revision ACL reconstruction
- 238 meniscal repairs performed
- 173 medial meniscus repairs
- 65 lateral meniscus repairs
- Minimum follow-up of six years
Researchers defined repair failure as the need for additional surgery related to the repaired meniscus during the follow-up period.
Key Findings
Meniscal Repair Demonstrated Strong Long-Term Success
At six years after surgery, the overall meniscal repair failure rate was 16%.
In other words, approximately 84% of repaired menisci remained intact without requiring additional surgical intervention. Considering the complexity of revision ACL reconstruction, these findings highlight the durability and effectiveness of meniscal repair in preserving knee function over time.
Medial Meniscus Repairs Had Higher Failure Rates
One of the most notable findings involved differences between medial and lateral meniscus repairs.
Researchers found:
- Medial meniscus repair failure rate: 20.6%
- Lateral meniscus repair failure rate: 5.7%
While both repair types demonstrated favorable outcomes overall, medial meniscus repairs were more likely to require additional surgery than lateral repairs.
This finding mirrors previous research in both primary and revision ACL reconstruction settings and may be related to the increased mechanical stress experienced by the medial meniscus during daily activities and sports participation.
Functional Outcomes Improved Significantly
Despite the challenges associated with revision ACL surgery, patients experienced meaningful improvements in knee function and quality of life.
At six-year follow-up, patients reported significant improvements in:
- Pain levels
- Daily activities
- Sports and recreational function
- Overall knee-related quality of life
Patients whose repairs remained successful reported the highest levels of function and satisfaction.
These improvements suggest that preserving the meniscus may help support long-term knee performance even after a revision ACL procedure.
Surgical Technique Did Not Significantly Impact Outcomes
Researchers also evaluated whether repair success was influenced by factors such as:
- Tear type
- Tear length
- Repair technique
- Suture type
- Number of sutures used
No significant differences were identified between successful and failed repairs based on these variables.
This suggests that patient-specific factors and biological healing may play a larger role in long-term success than the particular repair method used.
What This Means for Patients
Revision ACL reconstruction is often more complex than primary ACL surgery. Patients may have experienced additional cartilage damage, previous meniscal injury, or changes in knee stability that can make recovery more challenging.
Despite these factors, the study demonstrated that repairing the meniscus during revision ACL reconstruction remains a worthwhile and effective treatment option.
Preserving the meniscus can help:
- Protect knee cartilage
- Improve shock absorption
- Enhance joint stability
- Reduce excessive stress within the knee
- Support long-term knee health
Although some repairs may fail over time, the majority remain successful and contribute to improved function years after surgery.
Clinical Takeaway
This six-year follow-up study from the MARS cohort demonstrated that meniscal repair during revision ACL reconstruction achieves a high rate of long-term success. Approximately 84% of repairs remained intact without requiring additional surgery, while patients experienced significant improvements in pain, function, and quality of life.
While medial meniscus repairs showed a higher risk of failure compared with lateral repairs, the overall findings reinforce the value of meniscal preservation whenever possible. For patients undergoing revision ACL reconstruction, repairing a torn meniscus remains an important strategy for maintaining knee function and protecting joint health over the long term.
We are committed to providing personalized care and innovative treatments to help patients return to peak performance safely and effectively. To learn more about meniscal repair and ACL reconstruction, schedule a consultation with Dr. Kelechi Okoroha today.
Seeing patients in Dallas, Richardson, Frisco, and beyond, Dr. Okoroha provides specialized care focused on optimizing recovery, performance, and long-term joint health.
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