Observational studyClinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine2025
Phenotype of Achilles Tendon Ultrasonographic Abnormalities and Their Relationship to Future Time-Loss Injury.
Observational study in Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveTo identify specific tendon morphologies on ultrasonography of the Achilles tendon (AT) that later develop time-loss injury.
designBlinded post hoc analysis of a 2-year prospective, observational study of 944 AT sonographic videos to identify morphologic characteristics of diagnosed Achilles tendinopathies associated with future time-loss injury. The second year was used to validate the findings from the first year.
settingN/A. PATIENTS/
participantsFour hundred seventy-three National Collegiate Athletic Association student-athletes from 3 institutions over 2 years of data collection (57.7% females; 20.1 ± 1.6 years of age; 23.1 ± 2.8 kg/m 2 of body mass index; 9.4 ± 3.6 years of sport experience). INTERVENTIONS/ASSESSMENT OF RISK FACTORS: Particular tendon morphologies were used to develop 3 ultrasonographic imaging rules that were used to predict AT injury leading to time loss in sport.
main outcome measuresPositive predictive value (PPV) and negative predictive values of particular tendon morphologies associated with the development of time-loss injury within 1 year.
resultsOne of 3 morphologies, a deep mid-substance focal hypoechogenic area, was validated on 2 separate data sets and found to have a 33.3% PPV in both years for the development of time-loss injury.
conclusionResults suggest a specific phenotype of sonographic abnormality of the AT that suggests a 1-in-3 chance of developing time-loss injury within a year. Detecting abnormality of future AT before symptoms develop may allow for rehabilitation strategies to prevent or reduce time-loss.
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