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Published on: August 8, 2025
Arthroscopic Meniscal Repair: "Modified Outside-In Technique"
Sohrab Keyhani1, Mohammad Reza Abbasian1, Nasim Siatiri1
1Sohrab Keyhani MD Mohammad Reza Abbasian MD Nasim Siatiri MD Ali Sarvi MD Ali Akbar Esmailiejah MD Department of Orthopedic Surgery, Akhtar Hospital, Shahid Beheshti University of medical sciences, Tehran, Iran.
The modified outside-in technique offers a promising approach for meniscal repair, achieving high success rates and patient satisfaction. This method aims to improve fixation strength while minimizing complications associated with other meniscal repair procedures.
Area of Science:
- Orthopedic Surgery
- Sports Medicine
- Biomedical Engineering
Background:
- Current meniscal repair techniques have limitations, with no single procedure being universally superior.
- The modified outside-in technique was developed to enhance primary fixation strength and mitigate disadvantages of existing methods.
- This study evaluates the mid-term outcomes of meniscal injuries treated with this novel technique.
Purpose of the Study:
- To evaluate the clinical efficacy and patient outcomes of the modified outside-in meniscal repair technique.
- To assess the functional recovery and return to sport activities after meniscal repair using this method.
- To compare the modified outside-in technique with established meniscal repair procedures regarding safety and effectiveness.
Main Methods:
- A prospective study involving 66 patients undergoing meniscal repair with the modified outside-in technique.
- Pre- and post-operative International Knee Documentation Committee (IKDC) Subjective Knee Evaluation Form scores were recorded.
- Lysholm score, return to sport assessment, and patient satisfaction via visual analogue scale (VAS) were evaluated at a mean follow-up of 26 months.
Main Results:
- Clinical success was achieved in 92.4% of patients, with only 7.6% requiring meniscectomy.
- Significant improvement in IKDC scores (54.2 to 90.8, P<0.001) and high rates of excellent/good Lysholm scores (80.3%) were observed.
- Patient satisfaction averaged 8.35, and no neurovascular or knot-related complications were reported.
Conclusions:
- The modified outside-in technique demonstrates satisfactory functional and clinical outcomes for meniscal repair.
- The procedure appears to offer improved clinical and biomechanical results compared to traditional methods.
- Further complementary studies are recommended to solidify conclusions regarding its long-term efficacy and biomechanical advantages.

