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1. Introduction Articular cartilage serves as a support and load transmitter between bones, providing a low friction bearing surface [1]. Lesion of the articular cartilage is a frequent pathology that leads to pain and functional impairment, being caused by acute traumatic lesions, chronic degenerative alterations, repetitive micro-trauma, developmental articular pathologies, or metabolic factors [2].
2. Case Presentation A 25-year-old female executive accountant was referred to our clinic with a right hip mechanical pain that was worsening during walking and daily activities. The patient presented, 6 years before, to a regional hospital for investigations after a traumatic incident. A plain radiography was performed and, incidentally, a well-delimited lesion was noticed (Figure 1). An open biopsy was done without any other investigations.
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