ARUP; ISBN: 978-0-9562121-5-3 - CMBBE 2012 - Cardiff University

Figure3. Mean EKAM during the stance phase of gait pre (red lines) and post HTO
surgery (blue lines). Dotted lines indicate the mean ± 1SD. * indicates where the
maximum EKAM measures are selected for Table 1.
Fig.4 displays the KAAI pre and post-surgery for the operative and non-operative knees.
KAAI is an important variable to consider for patients with OA as it incorporates both
the magnitude and the duration of the EKAM to a single variable. Both loading and
loading time are important variables to define wear conditions of the joint. HTO surgery
reduces the KAAI for both the operative and non-operative knees. The reduction is
statistically significant for the operative limb.
Fig4. Mean (±SD) KAAI for the operative and non-operative limbs pre-operatively and
between 6-9 months post-operatively. * indicates significant reduction in KAAI for the
affected knee post-surgery (p