In this first lesson, the 2D view was used in class to examine the joint of the knee, see Fig. 3a. This view allowed students to perfectly assimilate the emplacement and orientation of the internal soft tissues, such as the cruciate ligaments. As a result, the question of the first posttest related to the anterior cruciate ligament location was correctly answered by all students of the experimental group. Note that only 75.6% of the control group answered this question correctly.
The 3D view, on the other hand, was used during the first lesson to study the anatomy and morphology of the ankle, see Fig. 5. The ankle is an interesting joint because, contrarily to the knee, it lacks any remarkable intra-articular elements. Therefore, the 3D visualization of the external bones reliefs was more suitable for the study of manual palpation than the 2D view. As a consequence, our experiments also reported an important improvement in the qualifications of the experimental group for all the questions of the first posttest related to this joint. We would like to highlight the question about the mid-tarsal joint, which had a percentage of correct answers of 77.4% in the
experimental group, but only 33.3% in the control group. This was also the question for which the difference between the groups was greater, around 44%.