Biomechanical and Viscoelastic Properties of Achilles Tendon in Pregnant Women-Pilot Study

Investigation of Trimester-Specific Normative Values of Biomechanical and Viscoelastic Properties of Achilles Tendon in Pregnant Women-Pilot Study

There is anatomical fascial continuity and functional connection between the plantar fascia, which has important roles in foot biomechanics, and the fibers of the Achilles tendon, and the change that will occur in any of these tissues is reflected in the other. However, it has not been objectively clarified how the tissue properties of the Achilles tendon, which plays an important role in foot biomechanics, such as the plantar fascia, change with pregnancy. Therefore, the aim of this pilot study is to investigate the trimester-specific biomechanical (stiffness, decrement and tone) and viscoelastic (creep and relaxation time) properties of the Achilles tendon, which adapts to changes in the foot structure during pregnancy.

Inclusion Criteria:

• First pregnancy
• They are between the ages of 18-40
• Pre-pregnancy Body-Mass-Index (BMI) < 30 kg/m2

Exclusion Criteria:

• Presence of any connective tissue disease that would affect the biomechanical or viscoelastic properties of the fascia
• Deterioration of skin integrity in measurement areas
• Presence of orthopedic, neurological, rheumatic problems that may cause musculoskeletal disorders and deviations from normal in biomechanical alignment
• History of surgery or fracture in the lower extremity and foot-ankle region in the last 6 months
• Defining metabolic disorders such as type I, II diabetes, gestational diabetes mellitus (GDM), preeclampsia