Shear wave elastographic characterization of normal and torn achilles tendons: a pilot study

Area of Science:

• Biomechanics
• Medical imaging
• Musculoskeletal system

Background:

• Achilles tendon injuries are common, impacting mobility.
• Accurate assessment of tendon integrity is crucial for effective treatment.
• Current diagnostic methods may not fully capture functional tendon status.

Purpose of the Study:

• To evaluate the feasibility of quantitative shear wave elastography (SWE) for Achilles tendon assessment.
• To compare the elasticity of ruptured Achilles tendons with that of normal tendons.
• To explore SWE's potential in evaluating Achilles tendon functional integrity.

Main Methods:

• Shear wave elastography (SWE) was performed on 36 normal and 14 ruptured Achilles tendons.
• A linear array transducer (4-15 MHz) was used for imaging.
• Elasticity values were measured in the longitudinal view of each tendon.

Main Results:

• Normal Achilles tendons exhibited a mean elasticity of 291.91 ± 4.38 kPa (actual values likely >300 kPa due to measurement saturation).
• Ruptured Achilles tendons showed a significantly lower mean elasticity of 56.48 ± 68.59 kPa.
• A statistically significant difference (P = .006) was observed between normal and ruptured tendons.

Conclusions:

• Quantitative shear wave elastography is a feasible method for assessing Achilles tendon elasticity.
• SWE provides valuable complementary biomechanical information for evaluating Achilles tendon function.
• This technique shows promise for diagnosing and monitoring Achilles tendon injuries.