[Mid-term effectiveness analysis of combined knee extensor mechanism realignment with bone anchor for recurrent...

Area of Science:

• Orthopedic Surgery
• Sports Medicine
• Biomechanical Engineering

Background:

• Recurrent patella dislocation is a debilitating condition affecting knee stability.
• Current treatments vary, necessitating evaluation of effective surgical interventions.
• The knee extensor mechanism plays a crucial role in patellar tracking and stability.

Purpose of the Study:

• To evaluate the mid-term effectiveness of combined knee extensor mechanism realignment with bone anchor for recurrent patella dislocation.
• To assess functional outcomes and complication rates associated with this surgical technique.

Main Methods:

• A cohort of 21 patients with recurrent patella dislocation underwent combined knee extensor mechanism realignment using a bone anchor.
• Patients were followed for over 3 years, with pre-operative and post-operative assessments using Lysholm and Kujala scores.
• Radiographic evaluations and Insall criteria were used to assess outcomes and patellar stability.

Main Results:

• Significant improvements were observed in Lysholm (91.5±7.1) and Kujala (88.1±7.6) scores at 3 years post-operation compared to pre-operative scores (p<0.001).
• An excellent and good rate of 76.2% was achieved based on Insall evaluation criteria.
• No major surgical complications such as deep vein thrombosis, infection, or nerve injury were reported.

Conclusions:

• Combined knee extensor mechanism realignment with bone anchor offers a simple, reliable, and effective mid-term solution for recurrent patella dislocation.
• The procedure demonstrates satisfactory outcomes with a low complication profile.
• Long-term effectiveness warrants further investigation through extended follow-up.