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. 2012 Nov 7;7(11):e48714. doi: 10.1371/journal.pone.0048714

Figure 6. Distance between PCL attachments, and PCL surface length, at flexion angles between relaxed extension and 120.

Figure 6

° flexion. Distance between PCL attachments (mean±S.D.) (A). There was a statistically significant pattern of attachment separation as the knee flexed to 100°. Beyond 100° flexion attachments became closer again (p<0.001). Length of the anterior surface of the PCL (mean±S.D.) (B). There was a statistically significant pattern of lengthening over the flexion arc to 120° (p<0.01). Length of the posterior surface of the PCL (mean±S.D.) (C). There was a statistically significant pattern of lengthening to 40°, then shortening to 120° (p<0.001). n = 7 for relaxed extension, 40°, 70°, 100° and 120° flexion. n = 5 for 90° and 110° flexion. **p<0.01 (paired t-tests).