• Hülya Gürbüz, Murat Çakar, Müjdat Adaş, Ali Çağrı Tekin, Mehmet Kürşad Bayraktar, and Cem Zeki Esenyel.
• Department of Anatomy, Faculty of Medicine, İstanbul Bilim University, İstanbul, Turkey.
• Acta Orthop Traumato. 2015 Jan 1;49(1):41-4.

ObjectiveThe aim of the present study was to determine the knee joint line level by its distance to the adductor tubercle and the apex of the fibular head in the Turkish population.MethodsThe study included 117 knees of 108 patients (63 males, 45 females; mean age: 31.3 years, range: 16 to 82 years). Femoral width and the distance from the apex of the fibular head to the joint line as well as the distance from the adductor tubercle to the joint line were measured on anteroposterior radiographs.ResultsMean femoral width was 87.2 mm. The average distance from the adductor tubercle to the joint line was 47.9 mm and from the fibular head to the joint line was 20.5 mm. A linear correlation was found between the distance from the adductor tubercle to the joint line and femoral width, with a ratio of 0.55. There was no significant correlation between the distance from the fibular head to the joint line and femoral width.ConclusionThere was a linear correlation between the femoral width and the adductor tubercle-joint line distance irrespective of any factors such as age, gender and height. Therefore, the adductor tubercle can be used as a reliable landmark to determine the joint line level for easy evaluation and measurement during surgery.

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