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Revision anterior cruciate ligament surgery: experience from Miami
J W Uribe1, K S Hechtman, J E Zvijac
1Department of Orthopaedics and Rehabilitation, University of Miami School of Medicine, Coral Gables, FL, USA.
Clinical Orthopaedics and Related Research
|April 1, 1996
Summary
Revision anterior cruciate ligament (ACL) surgery can restore knee stability, with autogenous grafts offering better objective results than allografts. However, subjective outcomes depend on cartilage health, and only half of patients return to their previous activity level.
Area of Science:
- Orthopedic Surgery
- Sports Medicine
- Biomedical Engineering
Background:
- Failed anterior cruciate ligament (ACL) reconstruction leading to persistent instability is a growing concern.
- Recurrent laxity after primary ACL surgery necessitates revision procedures to restore knee function.
Purpose of the Study:
- To evaluate the outcomes of revision ACL surgery in patients with failed primary reconstructions.
- To compare the efficacy of autogenous versus allograft tissues in revision ACL surgery.
- To identify factors influencing functional and subjective recovery after revision ACL reconstruction.
Main Methods:
- A cohort of 54 patients undergoing revision ACL surgery was assessed.
- Pre- and post-revision evaluations included clinical examination, KT-1000 arthrometer, radiographs, Lysholm score, Tegner scale, and subjective questionnaires.
- Graft types (autogenous patellar tendon, contralateral patellar tendon, hamstring tendon, allograft) and surgical techniques were analyzed.
Main Results:
- Revision surgery objectively improved knee stability in all patients (average KT-1000: 2.8 mm).
- Autogenous grafts yielded superior objective stability (KT-1000: 2.2 mm) compared to allografts (KT-1000: 3.3 mm).
- No significant functional difference was observed between graft types, but subjective outcomes worsened with greater cartilage degeneration. Only 54% returned to pre-injury activity levels.
Conclusions:
- Revision ACL surgery effectively improves knee stability, particularly with autogenous grafts.
- Graft choice, precise tunnel placement, and addressing secondary restraints are crucial for successful revision outcomes.
- Patient-reported outcomes are significantly influenced by the extent of articular cartilage damage, impacting return to pre-injury activity levels.