The normal and abnormal anatomy of the hip joint in childhood was evaluated by ultrasonography (US) with reference to examination technique and errors. When compared with computed tomography (CT), it was confirmed that the two sonographic echoes from the hip joint represent the femoral neck and the external surface of the capsule and that the thickness of the echo received from the capsule depends on the frequency of the transducer. Partial volume effects may simulate or increase the sonographic appearance of hip joint effusion. The normal relationship between joint capsule and femoral neck was established.
. EgundN.PalmerJ.: Femoral anatomy described in cylindrical coordinates using computed tomography. Acta Radiol. Diagnosis25 (1984), 209.
2.
. EgundN.NilssonL. T.StrömqvistB.MalmgrenN.WingstrandD H.: Hip joint hemarthrosis after femoral neck fracture fixation. Acta Orthop. Scand.59 (1988), 526.
3.
. EgundN.WingstrandH.ForsbergL.PetterssonH.SundénG.: Computed tomography and ultrasonography for diagnosis of hip joint effusion in children. Acta Orthop. Scand.57 (1985), 211.
4.
. KallioP.RyöppyS.: Hyperpressure in juvenile hip disease. Acta Orthop. Scand.56 (1985), 211.
5.
. KoehlerP. R.AndersonR. E.BaxterB. S.: Effect of computed tomography viewer controls and anatomical measurements. Radiology130 (1979), 189.
6.
. KrampsH. A.LenschowE.: Einsatzmöglichkeiten der Ultraschalldiagnostik am Bewegungsapparat. Z. Orthop.118 (1979), 355.
7.
. MoultonA.UpadhyayS. S.: A direct method of measuring femoral anteversion using ultrasound. J. Bone It Surg.64-B (1982), 469.
8.
. NovickG.GhelmanB.SchneiderM.: Sonography of the neonatal and infant hip. Amer. J. Roentgenol.141 (1983), 639.
9.
. RosenborgM.MortenssonW.: The validity of radiographic assessment of childhood transient synovitis of the hip. Acta Radiol. Diagnosis27 (1986), 85.
10.
. RydholmU.WingstrandH.EgundN.ElborgR.ForsbergL.LidgrenL.: Sonography, arthroscopy, and intracapsular pressure in juvenile chronic arthritis of the hip. Acta Orthop. Scand.57 (1986), 295.
11.
. WilsonD. J.GreenD. J.MacLarnonJ. C.: Arthrosonography of the painful hip. Clin. Radiol.35 (1984), 17.
12.
. WingstrandH.EgundN.: Ultrasonography in hip joint effusion. A case report. Acta Orthop. Scand.55 (1984), 469.
13.
. WingstrandH.CarlinN. O.ForsbergL.SundénG.: Intracapsular pressure in transient synovitis of the hip. Acta Orthop. Scand.56 (1985), 204.
14.
. WingstrandH.LidgrenL.SahlstrandT.: Sonography in septic arthritis of the hip in the child. Report of four cases. J. Pediatr. Orthop.7 (1987), 206.
15.
. WingstrandH.StrömqvistB.EgundN.GustafsonT.NilssonL. T.ThornqvistK. G.: Hemarthrosis in undisplaced cervical fractures. Tamponade may cause reversible femoral head ischaemia. Acta Orthop. Scand.57 (1986), 305.
