Posterior slope of tibial plateau in Chinese

The posterior slope of tibial plateau in 25 pairs of Chinese cadaveric tibi a was studied. A digital photograph of the lateral profile of each cadaveri c tibia was taken, and the posterior slope angles of medial and lateral pla teau relative to the anterior tibial cortex were measured. The posterior sl ope of the medial plateau was 14.8 degrees, and the posterior slope of the lateral plateau was 11.8 degrees. Lateral radiographs of each cadaveric tib ia were taken, and the posterior tibial slope angles relative to simulated extramedullary and intramedullary alignment were determined. With radiograp hic measurement, the posterior slope was 11.5 degrees using intramedullary method, and it was 14.7 degrees using extramedullary method. The posterior slopes increased with the presence of degenerative changes.