In cases of avulsion fracture of the ischial tuberosity in which the bone fragments are substantially displaced, nonunion may cause pain in the ischial area. Case courtesy of judith hu.
Figure 1 from Chronic (Ten Years) Ischial Tuberosity ... from ai2-s2-public.s3.amazonaws.com
When the relatively weak apophysis eventually becomes harder bone, the incidence of these fractures is greatly reduced. This structure helps to support the body when an individual is in a seated position. The location of the pain and an inability to bear weight can be considered diagnostic.
Avulsion fractures of the lesser tuberosity are unusual injuries that should be suspected in an adolescent athlete who presents with chronic pain and focal anterior tenderness.
Fractures of the ischial tuberosity are rare, traumatic lesions, usually sustained as an avulsion of the ischial apophysis in adolescents during strenuous activities. Avulsion fractures of the ischium can occur with acute hamstring injuries. The location of the pain and an inability to bear weight can be considered diagnostic. In cases of avulsion fracture of the ischial tuberosity in which the bone fragments are substantially displaced, nonunion may cause pain in the ischial area. This injury occurs at the attachment of the hamstring tendons. Avulsion fractures of the lesser tuberosity are unusual injuries that should be suspected in an adolescent athlete who presents with chronic pain and focal anterior tenderness. This in turn will prevent the development of chronic pain on sitting and walking and an inability to return to sporting activities. They constitute about 30% of apophyseal avulsion fractures in the pelvis 2, 3. In adolescent athletes, but also in young adults this bone can be pulled off by a forceful contraction of the hamstrings. The apophysis is part of the ischial tuberosity and the part which generally allows the avulsion fracture to take place. Hence, it is tagged as the sitting bone. The ischial tuberosity (or tuberosity of the ischium, tuber ischiadicum), also known colloquially as the sit bones or sitz bones, or as a pair the sitting bones is a large swelling posteriorly on the superior ramus of the ischium. Lower extremity | trauma | pediatrics | hip | fractures. Case courtesy of judith hu. It brings a quick onset of pain, swelling and weakness. John kiel on 5 july 2019 08:52:11. Such fracture usually occurs between puberty and late adolescence in those who do a lot of sport—it is in puberty that the secondary ossification centre.
