Coxalgia crónica: necrosis avascular de la cabeza femoral

avascular bone necrosis is a very rare pathological entity that can appears in an primary way or a secondary one due to diverse factors. it can be found in a few levels, especially in the femoral head and the carpal navicular bone in the adult patient. if the lession is located in the femoral head leads to a hip pain, a very frequent clinical manifestation studied in primary health care centers, so it is very important its early and differential diagnosis, above all, in the case that exist risk factors. we present a clinical case of avascular necrosis of the femoral head and perform a current bibliographic revision on the matter.