We studied 100 hip joints in Indian patients to measure femoral head sphericity, head-neck offset and alpha angle. Our study indicates that the mean values of the above measurements are far below the “danger” level for the onset of femoro-acetabular impingement. It remains to be seen whether these findings explain the low incidence of primary hip osteoarthritis in the Indian population.
HarrisW.H.Etiology of osteoarthritis of the hip.Clin Orthop Relat Res1986; 213: 20–33.
2.
GanzR., ParviziJ., BeckM., LeunigM., NötzliH., SiebenrockK.A.Femoroacetabular impingement: a cause for osteoarthritis of the hip.Clin Orthop Relat Res2003; 417: 112–9.
3.
InoueK., WichartP., KawsakiT.Prevalence of hip osteoarthritis and acetabular dysplasia in French and Japanese adults.Rheumatology (Oxford)2000; 39: 745–8.
4.
ItoK., MinkaMA2nd, LeunigM., WerlenS., GanzR.Femoro-acetabular impingement and the cam-effect. A MRI-Based quantitative anatomical study of the femoral head-neck offset.J Bone Joint Surg Br2001; 83: 171–6.
5.
NötzliH.P., WyssT.F., StoecklinC.H., SchmidM.R., TreiberK., HodlerJ.The contour of the femoral head-neck junction as a predictor for the risk of anterior impingement.J Bone Joint Surg Br2002; 84: 556–60.
6.
HoaglundF.T., ShibaR., NewbergA.H.Disease of the hip. A comparative study of Japanese oriental and American white patients.J Bone Joint Surg Am1985; 67: 1376–83.
7.
FrensborgN.The CE angle of normal hips.Acta Orthop Scand1976; 47: 403–5.
8.
TönnisD.Die angeborene Huftdysplasiae und Huftluxation im kindestund Erwachsenenalter.Berlin: Springer-Verlag, 1984; 74–82.
9.
EijerH., LeuingM., MahomedM.N., GanzR.Cross-table lateral radiographs for screening of anterior femoral head neck offset in patients with femoro-acetabular impingement.Hip Int2001; 11: 37–41.
10.
LetournelE., JudetR.Radiology of the normal acetabulum. In: LetournelE., ed. Fractures of the acetabulum.2nd ed.New York: Springer-Verlag1993; 29–31.
11.
MeyerD.C., BeckM., EllisT., GanzR., LeuingM.Comparison of six radiographic projections to assess femoral head/neck asphericity.Clin Orthop Relat Res2006; 445: 181–5.
StulbergS.D., CordellL.D., HarrisW.H.Unrecognised childhood hip disease: A major cause of idiopathic osteoarthritis of the hip. In: AmstutzH.C., ed. The hip: proceedings of the third open meeting of the Hip Society.St Louis: CV Mosby; 1975; 212–28.
14.
GekelerJ.[Cox arthrosis with a deep acetabulum (proceedings)]. [Article in German].Z Orthop Ihre Grenzgeb1978; 16: 454.
15.
ReynoldsD., LucasJ., KlaueK.Retroversion of the acetabulum. A cause of hip pain.J Bone Joint Surg Br1999, 81: 281–8.
ChandlerD.R., GlousmanR., HullD.Prosthetic hip range of motion and Impingement. The effects of head and neck geometry.Clin Orthop Relat Res1982; 166: 284–91.
18.
HossainM., AndrewJ.G.Current management of femoro-acetabular impingement.Curr Orthop2008; 22: 300–10.
19.
BarrosH.J., CamanhoG.L., BernabéA.C., RodriguesM.B., LemeL.E.Femoral head-neck junction deformity is related to osteoarthritis of the hip.Clin Orthop Relat Res2010; 468: 1920–5.