Breda SJ, van der Vlist A, de Vos RJ, et al. - Researchers aimed at determining the correlation between patellar tendon stiffness and the presence of patellar tendinopathy (PT), Further, they examined the reliability of shear-wave elastography (SWE). They assessed 76 participants with PT (58 men, mean age 24.4 ± 3.8 years) and 35 asymptomatic activity-matched controls (16 men, mean age 21.5 ± 3.8 years). Diagnosis of PT was done clinically and was confirmed by either grayscale US (GSUS) or power Doppler US (PDUS), or both. Observations revealed association of PT with significantly greater patellar tendon stiffness. Excellent intraobserver reliability and good interobserver reliability were observed in correlation with SWE measurements. This finding of tendon stiffening in PT yields further information to GSUS/PDUS and could result in enhanced understanding of the disease and subsequently in altered therapeutic decision-making, for example, by staging the altered viscoelastic properties in PT and by monitoring the response to therapeutic interventions.