Measurement of posterior tibial slope
To measure the angle of tibial slope, a line is drawn on an X-ray along the front of the tibia (anterior tibial cortex line) (A). Then a line is drawn perpendicular to the anterior tibial cortex line (B). Finally a line is drawn along the top of the tibial plateau (C), and the angle of the posterior tibial slope is the angle formed by B and C.
Underappreciated Factors to Consider in Revision Anterior Cruciate Ligament Reconstruction: A Current Concepts Review. Lee PYF, Nixion A, Chandratreya A and Murray JM. Surg J (N Y). 2017 Jan; 3(1): e9–e16.
High tibial osteotomy in knee laxities: Concepts review and results. Robin JG and Neyret P. EFORT Open Rev. 2017;1(1):3–11
Posterior tibial slope in the normal and varus knee. Matsuda S, Miura H, Nagamine R, Urabe K, Ikenoue T, Okazaki K and Iwamoto Y. Am J Knee Surg. 1999 Summer;12(3):165-8.
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