Loss of heel pad elasticity has been suggested as one of the possible expla
nations of plantar heel pain. This hypothesis is evaluated by this blinded
observer prospective study, using an age and weight matched control populat
ion. Hindfoot lateral radiographs of 73 patients with plantar heel pain, 29
of whom had bilateral involvement (102 feet), and who ranged in age from 2
0 to 60 years, were studied and compared with 120 healthy subjects (240 fee
t). Heel pad thickness and heel pad compressibility index were not signific
antly different in patients with plantar heel pain than in healthy subjects
matched for age and weight. In patients with unilateral heel pain, heel pa
d thickness and heel pad compressibility index on the painful side were not
significantly different from the opposite painless side. The contribution
of the heel pad elasticity measured as a visual compressibility index for p
lantar heel pain is a matter of debate.