The Arthroscopic All-Inside Tibial-Inlay Reconstruction of the Posterior Cruciate Ligament: Medium-Term Functional Results and Complication Rate

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The present study evaluates the medium-term functional and radiological outcome as well as complications following an arthroscopic tibial inlay reconstruction of the posterior cruciate ligament (PCL). A total of 39 patients (mean age: 32.6 ± 12.4 years) with acute and chronic PCL instabilities received a single-bundle all-inside arthroscopic tibial inlay reconstruction with quadriceps tendon autograft and were available for clinical follow-up on average after 3.8 ± 1.8 years. Assessment was conducted utilizing visual analogue scale (VAS), International Knee Documentation Committee (IKDC), Tegner, Lysholm, and knee injury and osteoarthritis outcome (KOOS) scores. VAS, Tegner, Lysholm, and subjective IKDC-scores averaged to 2.75 ± 1.95, 4 (1-9), 77.19 ± 17.54, and 75.18 ± 19.29 points, respectively. Mean KOOS results were 80.66 ± 1.98 for pain, 74.72 ± 17.72 for symptoms, 88.44 ± 13.95 for activities of daily life, 65.35 ± 27.96 for sports and recreation, and 60.01 ± 25.36 for quality of life. Overall IKDC-score rating was A2, B28, C5, and D4. The overall complication rate of 5.4% was caused by one superficial infection, one patellar fracture, and one lesion to the popliteal artery. Arthroscopic tibial inlay reconstruction is a valuable procedure regarding medium-term subjective and objective outcome measures. Return to sports, subjective satisfaction, and objective stability are predictable. The complication rate is acceptable but particular precaution is recommended to protect the popliteal artery and adjacent structures at risk.

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