Biomedical Engineering Reference
In-Depth Information
1 cm
Lateral view of right foot
1 cm
Medial view of right foot
FIgure 5.4
Lateral and medial views of heel pad deformation at heel strike.
0.7
0.6
0.58
0.5
0.4
0.3
0.2
0.1
0
0
5
10
15
Time (ms)
FIgure 5.5
Predicted plantar fat pad deformation curve during heel strike.
In fat pad atrophy patients, hard-soled shoes and walking on hard surfaces can aggravate pain.
The central portion of the heel fat pad is the most intense region (Alshami, Souvlis, and Coppieters
2008). In this study, the largest strain of the heel fat pad during the heel strike was predicted around
the central portion, demonstrated in Figure 5.6. The medial calcaneal nerve usually divides into
anterior and posterior branches and offers sensory innervation to most of the heel fat pad (Louisia
and Masquelet 1999). The medial calcaneal nerve can be irritated and compressed following atro-
phy of the heel fat pad (Davidson and Copoloff 1990).
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