Corrigendum to “Multimodality scoring of chondral injuries in the equine fetlock joint ex vivo” [Osteoarthritis Cartilage 25 (5) (2017 May) 790-798].

This research article discusses a correction to a previously published study on scoring of chondral injuries in equine fetlock joints. Specifically, the authors found an issue with their original calculations of the Young’s modulus values, which have been updated and corrected in this new version without changing any of the original study’s findings or interpretations.

Background of the Research

• The research article that has been corrected, titled “Multimodality scoring of chondral injuries in the equine fetlock joint ex vivo” was originally published in May 2017 in the journal Osteoarthritis and Cartilage.
• Its main focus was on the evaluation of chondral injuries in the fetlock joint of horses, which is essentially probing into understanding the impact and degree of cartilage injuries.

The Error and its Correction

• In the original paper, a systematic error occurred in the calculation of the Young’s modulus values. The formula used was meant for shear modulus, not for Young’s modulus as was originally intended.
• The authors discovered that due to this error, the Artscan modulus values, represented as EArtscan in the paper, were exactly one third of the correct values. Consequently, this also affected the y-axes scaling for Figures 3C and 3D in the paper.
• To correct this issue, the authors revised the formula to accurately represent Young’s modulus based on the Hayes’ elastic model of indentation, thereby adjusting the EArtscan values in Table 1, and the scaling of the axes in Figures 3C and 3D.

Implications of the Error

• Despite the technical correction in this paper, the authors emphasized that this error did not impact the primary conclusions, discussion, or any other results or statistics in the original article.
• This suggests that while the error concerned a key calculation in the paper, its overall impact was largely limited to the presentation of numerical values and graphical representation, rather than changing the underlying scientific findings or interpretations.