Why do subchondral cysts occur at the medial aspect of the femoral head in hip dysplasia?

CONCLUSIONS: The formation of subchondral cysts at the medial femoral head in hip dysplasia may be related to damage in the ligamentum teres. Considering that subchondral cysts develop in early osteoarthritis, the progression of arthritis in hip dysplasia appears to correlate with damage to the ligamentum teres, as well as compressive pressure on the joint. PMID: 32172601 [PubMed - as supplied by publisher]

https://www.ncbi.nlm.nih.gov/pubmed/32172601?dopt=Abstract

Source: Hip International - March 15, 2020 Category: Orthopaedics Authors: Chang JS, Song JH, Kim JW, Shin HK, Park HJ, Cho Y, Lee I, Park JH Tags: Hip Int Source Type: research