RT Journal
A1 Ayeni, Olufemi R.
A1 Bedi, Asheesh
A1 Lorich, Dean G.
A1 Kelly, Bryan T.
T1 Femoral Neck Fracture After Arthroscopic Management of Femoroacetabular ImpingementA Case Report
JF The Journal of Bone & Joint Surgery
JO The Journal of Bone & Joint Surgery
YR 2011
FD May 4
VO 93
IS 9
SP e47 1
OP 8
DO 10.2106/JBJS.J.00792
UL http://dx.doi.org/10.2106/JBJS.J.00792
AB 
Ganz and colleagues recently identified femoroacetabular impingement as the predominant cause of labral tears in nondysplastic hips1. Structural abnormalities of the hip can limit motion and result in repetitive impact of the proximal part of the femoral neck against the acetabular labrum and adjacent cartilage. Osseous impingement as a result of a decrease in femoral head-neck offset or an aspherical femoral head is termed cam impingement. On the acetabular side, pincer impingement results from various degrees of overgrowth of the osseous acetabulum and excessive acetabular retroversion2. Pincer impingement can be subdivided into coxa profunda or protrusio, anterosuperior overcoverage, and true acetabular retroversion.