Long-term results of ACL revision surgery using Achilles tendon allograft
Official title: Long-term Clinical and Radiographic Results of Revision Anterior Cruciate Ligament Reconstruction Using Over The Top Single-bundle Technique and Lateral Extra-articular Tenodesis With Achilles Tendon Allograft.
Run by Istituto Ortopedico Rizzoli · NCT06868147 · Data updated 2026-11-12
This study tests how well revision ACL surgery using an Achilles tendon graft works for patients two years after their surgery and what factors might affect their recovery.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years to 50 Years |
| Sex | All |
| Enrollment | 59 (estimated) |
| Sponsor | Istituto Ortopedico Rizzoli Academic / other |
| Locations | 1 site (Bologna) |
| Status | Recruiting |
| Started | March 19, 2025 |
| Main results expected | January 2027 |
| Study ends | January 2027 |
| Registry record updated | July 2, 2026 |
| Trial ID | NCT06868147 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates for this study are individuals aged 18 to 50 who have undergone revision ACL reconstruction with a specific surgical technique and are at least two years post-surgery.
✕Probably not a fit
Patients with advanced knee osteoarthritis, severe obesity, or other significant lower limb conditions may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This study evaluates the long-term clinical and radiographic outcomes of patients who have undergone revision anterior cruciate ligament (ACL) reconstruction using a single-bundle technique combined with external tenodesis utilizing an Achilles tendon allograft. It focuses on understanding how various factors, such as the type of graft used and the extent of knee damage, influence surgical outcomes. The study aims to gather data from patients who are at least two years post-surgery to assess the effectiveness of this surgical approach.
Why it matters
Potential benefit: If successful, this study could provide valuable insights into optimizing ACL revision surgeries, potentially leading to improved patient outcomes.
How similar studies have gone: While there have been various studies on ACL reconstruction techniques, this specific approach using Achilles tendon allograft in a revision context is less commonly explored, making it a novel investigation.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. Age between 18 and 50 years at the time of surgery; 2. Male and female gender; 3. Patients who have undergone revision of anterior cruciate ligament reconstruction with a single-bundle "Over-The-Top" technique and external tenodesis using Achilles tendon allograft, with or without associated procedures, at least 2 years post-surgery; 4. A radiograph taken immediately before or after the surgery of the affected knee; 5. Patients who have provided consent to participate in the study. Exclusion Criteria: 1. Patients no longer accessible; 2. Patients who deny consent to participate in the study; 3. Advanced knee osteoarthritis (Outerbridge grade III-IV) at the time of surgery; 4. Severe obesity (BMI \> 35); 5. Lower limb conditions that prevent the patient from maintaining an upright position with full weight-bearing during the assessment; 6. Infection or hematological or rheumatic conditions at the time of the assessment.
Where it's running
-
IRCCS Istituto Ortopedico Rizzoli
Bologna, Italy Recruiting
Study contacts
- Study coordinator: stefano zaffagnini
- Email: stefano.zaffagnini@unibo.it
- Phone: 0516366075
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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ACL reconstruction with the over-the-top technique plus lateral extra-articular tenodesis in older versus younger patients
This project tests whether ACL reconstruction using the over-the-top technique combined with lateral extra-articular tenodesis gives similar outcomes and complication rates in people over 50 compared with people under 30.
-
Ways to Boost Quadriceps Power After ACL Surgery
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Exercise with blood flow restriction for patients with complete ACL tears
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Split-belt treadmill training to improve knee biomechanics after ACL reconstruction
This small pilot will test whether six weeks of split-belt treadmill training can change how your reconstructed knee is loaded when you walk.
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Evaluating ACL injury and re-rupture rates after surgery
This study looks at how often people who had ACL surgery from 2020 to 2030 experience re-injury and how their recovery affects their ability to return to sports and quality of life.
-
Using living donor hamstring tendons for ACL reconstruction in children
This study is testing a new way to repair torn ACLs in kids by using hamstring tendons from a living parent to see if it helps them heal better than traditional methods.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.