This article refers to:
Cuéllar A, Ruiz-Iban M A, Marín-Peña O, Cuéllar R.
Rapid development of osteoarthritis following arthroscopic resection of an “os acetabuli” in a mildly dysplastic hip—a case report.
Acta Orthop 2015; 86 (3): 396-8. DOI 10.3109/17453674.2015.1025199
In the article by Cuéllar et al. 2015, Figure 1A was by a technical mistake wrongly reproduced by Acta Orthopaedica. The correct Figure 1A is shown below.