<prompt> Jumpers fracture is seen in -CalcaneumTibiaPelvisNeck femur  <response>: Jumpers fractures of the sacrum are characterized by an H - or U - shaped fracture line in the upper sacrum, usually involving the S1-S2 region.Typical, the anterior segment of the pelvic ring is not injured.So, Jumpers fracture involve the posterior segment of pelvic ring. 