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KMID : 1037920140010010012
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Arthroscopy and Orthopedic Sports Medicine
2014 Volume.1 No. 1 p.12 ~ p.16
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Anatomical posterolateral ligament reconstruction of the knee using Achilles tendon allograft
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Choi Nam-Yong
Jang Eun
Do Jeong-Hun
Kim Hyung-Seok
Song Hyun-Seok
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Abstract
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Background: We evaluated the clinical outcomes of an anatomical reconstruction in patients with posterolateral instability of the knee joint using Achilles tendon as an allograft.
Methods: Twenty five patients who underwent anatomical reconstruction for grade III posterolateral instability were enrolled. There were 20 men and 5 women with a mean age of 33 years (range, 20 to 42 years). Anatomical reconstruction was achieved by using the Achilles tendon allograft to synchronously reconstruct the lateral collateral ligament, the popliteofibular ligament and the popliteus tendon through a passage of the tibial and fibular tunnels (Lee’s method). The Lysholm scores, the International Knee Documentation Committee (IKDC) grade, the degree of posterolateral instability of the knee joint, and the degree of external rotation of the tibia were measured and analyzed.
Results: The mean follow-up period was 36 months. The mean Lysholom scores were 55 points preoperatively and 88 points postoperatively (P < 0.05). Postoperatively, 80% of patients achieved a grade B (nearly normal) IKDC grade, whereas the remaining 20% exhibited a grade C (abnormal) score. Based on the classifications of Noyes & Barber-Westin, the preoperatively degrees of the posterolateral instability of the knee joint and the external rotation of the tibia were in all cases classified into the ‘Failed’ class. Postoperatively, however, 20 were classified into ‘Functional’, and 5 were classified into ‘Partially functional’ levels (P < 0.05).
Conclusion: In patients with isolated or combined grade III posterolateral ligament injuries of knee, anatomical posterolateral ligament reconstruction using Achilles tendon allograft provided satisfactory clinical outcomes at an average of 36 months follow-up.
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KEYWORD
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Posterolateral instability, Anatomical reconstruction, Achilles tendon allograft
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