Abstract
Background
The aim of this study was to propose a simple method to determine the pelvic inclination angle using anteroposterior radiographs of the hip.
Methods
The 283 subjects were randomly selected from patients who had undergone hip surgery at our institution from July 2002 to June 2004. Anteroposterior (AP) and lateral radiographs of the pelvis were obtained in the standing position. To assess the pelvic inclination angle from AP radiographs, a formula was determined by a trigonometric function. A significant correlation between the angle calculated by the formula and the measured angle (θ0) on lateral radiographs was confirmed. The calculated angle (θ1) was obtained from two measured values: the pelvic foramen height (H) on AP radiographs and the pelvic foramen distance (D) on lateral radiographs. The formula used was as follows: sin θ = H/D. The calculated angle (θ2) was obtained from one measured value — the pelvic foramen height on AP radiographs — because the pelvic foramen distance on lateral radiographs substituted for the average of the pelvic foramen distance investigated in 236 patients. The formula was sin θ = H/average.
Results
The correlation between the calculated angle (θ1) and the measured angle (θ0) was significant, and the correlation between calculated angle θ1 and calculated angle θ2 was also significant.
Conclusions
The pelvic inclination angle can be estimated by measuring the height of the pelvic foramen according to our formula. Our formula was shown to have adequate reliability and reproducibility.
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References
S Jacobsen S Sonne-Holm B Lund K Sballe T Kiaer H Rovsing et al. (2004) ArticleTitlePelvic orientation and assessment of hip dysplasia in adults Acta Orthop Scand 75 721–9 10.1080/00016470410004094 Occurrence Handle15762262 Occurrence Handle10.1080/00016470410004094
CE Johnston SuffixII DR Wenger JM Roberts SW Burke JW Roach (1986) ArticleTitleAcetabular coverage: three-dimensional anatomy and radiographic evaluation J Pediatr Orthop 6 548–58 Occurrence Handle3760164
T Nishii N Sugano H Miki T Koyama M Takao H Yoshikawa (2004) ArticleTitleInfluence of component positions on dislocation: computed tomographic evaluations in a consecutive series of total hip arthroplasty J Arthroplasty 19 162–6 10.1016/j.arth.2003.09.005 Occurrence Handle10.1016/j.arth.2003.09.005 Occurrence Handle14973858
N Konishi T Mieno (1993) ArticleTitleDetermination of acetabular coverage of the femoral head with use of a single anteroposterior radiograph: a new computerized technique J Bone Joint Surg Am 75 1318–33 Occurrence Handle1:STN:280:DyaK2c%2Fht1yqtg%3D%3D Occurrence Handle8408153
DL Janzen SE Aippersbach PL Munk DF Sallomi D Garbuz J Werier et al. (1998) ArticleTitleThree-dimensional CT measurement of adult acetabular dysplasia: technique, preliminary results in normal subjects, and potential applications Skeletal Radiol 27 352–8 10.1007/s002560050397 Occurrence Handle10.1007/s002560050397 Occurrence Handle1:STN:280:DyaK1czpvVSqsA%3D%3D Occurrence Handle9730324
S Katada K Ando (1984) A roentgenographic evaluation of the indices for hip dysplasia in children influenced by pelvic tilt R Ueno N Akamatsu Y Itami H Tagawa S Yoshino (Eds) The hip: clinical studies and basic research Elsevier Science Amsterdam 137–40
KA Siebenrock DF Kalbermatten R Ganz (2003) ArticleTitleEffect of pelvic tilt on acetabular retroversion: a study of pelves from cadavers Clin Orthop 407 241–8 Occurrence Handle10.1097/00003086-200302000-00033 Occurrence Handle12567152
D Tonnis (1987) General radiography of the hip joint D Tonnis (Eds) Congenital dysplasia and dislocation of the hip in children and adults Springer-Verlag Berlin 112–6
RP Jackson MD Peterson AC McManus C Hales (1998) ArticleTitleCompensatory spinopelvic balance over the hip axis and better reliability in measuring lordosis to the pelvic radius on standing lateral radiographs of adult volunteers and patients Spine 23 1750–67 10.1097/00007632-199808150-00008 Occurrence Handle10.1097/00007632-199808150-00008 Occurrence Handle1:STN:280:DyaK1czpslKhsA%3D%3D Occurrence Handle9728376
TM Keller A Rake SCA Michel B Seifert G Efe K Treiber et al. (2003) ArticleTitleObstetric MR pelvimetry: reference values and evaluation of inter- and intraobserver error and intraindividual variability Radiology 227 37–43 Occurrence Handle10.1148/radiol.2271011658 Occurrence Handle12601187
S Kojima S Kobayashi N Saito M Nawata H Horiuchi K Takaoka (2001) ArticleTitleMorphological characteristics of the bony birth canal in patients with developmental dysplasia of the hip (DDH): investigation by three-dimensional CT J Orthop Sci 6 217–22 10.1007/s007760100037 Occurrence Handle10.1007/s007760100037 Occurrence Handle1:STN:280:DC%2BD3Mvjslyitg%3D%3D Occurrence Handle11484113
M Katanozaka M Yoshinaga K Fuchiwaki Y Nagata (1999) ArticleTitleMeasurement of obstetric conjugate by ultrasonic tomography and its significance Am J Obstet Gynecol 180 159–62 10.1016/S0002-9378(99)70168-7 Occurrence Handle10.1016/S0002-9378(99)70168-7 Occurrence Handle1:STN:280:DyaK1M7hsFWnuw%3D%3D Occurrence Handle9914597
H Lotz L Ekelund SO Hietala L Eriksson DE Wiklund G Wickman (1987) ArticleTitleLow dose pelvimetry with biplane digital radiography Acta Radiol 28 577–80 Occurrence Handle10.3109/02841858709177404 Occurrence Handle1:STN:280:DyaL1c%2FltVCjsQ%3D%3D Occurrence Handle2960351
DL Carman RH Browne JG Birch (1990) ArticleTitleMeasurement of scoliosis and kyphosis radiographs: intraobserver and interobserver variation J Bone Joint Surg Am 72 328–33 Occurrence Handle1:STN:280:DyaK3c7os1Ohsg%3D%3D Occurrence Handle2312528
Y Takemitsu Y Harada T Iwahara M Miyamoto Y Miyatake (1988) ArticleTitleLumbar degenerative kyphosis: clinical, radiological and epidemiological studies Spine 13 1317–26 Occurrence Handle10.1097/00007632-198811000-00019 Occurrence Handle1:STN:280:DyaL1M%2FosVKqtw%3D%3D Occurrence Handle2974629
S Nishihara N Sugano T Nishii K Ohzono H Yoshikawa (2003) ArticleTitleMeasurements of pelvic flexion angle using three-dimensional computed tomography Clin Orthop 411 140–51 Occurrence Handle10.1097/01.blo.0000069891.31220.fd Occurrence Handle12782869
S Anda T Terjesen KA Kvistad (1991) ArticleTitleComputed tomography measurements of the acetabulum in adult dysplastic hips: which level is appropriate? Skeletal Radiol 20 267–71 10.1007/BF02341662 Occurrence Handle10.1007/BF02341662 Occurrence Handle1:STN:280:DyaK3MzgsF2muw%3D%3D Occurrence Handle1853218
N Olmedo-Garcia F Lopez-Prats A Agullo A Ortuno A Palazon (2000) ArticleTitleA comparative study of the accuracy of Ranawat’s and Pierchon’s methods to determine the centre of rotation in bilateral coxopathy Skeletal Radiol 29 652–5 10.1007/s002560000279 Occurrence Handle10.1007/s002560000279 Occurrence Handle1:STN:280:DC%2BD3M3itlGqsQ%3D%3D Occurrence Handle11201035
GE Lewinnek JL Lewis R Tarr CL Compere JR Zimmerman (1978) ArticleTitleDislocations after total hip-replacement arthroplasties J Bone Joint Surg Am 60 217–20 Occurrence Handle1:STN:280:DyaE1c7ltV2qsg%3D%3D Occurrence Handle641088
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Kitajima, M., Mawatari, M., Aita, K. et al. A simple method to determine the pelvic inclination angle based on anteroposterior radiographs. J Orthop Sci 11, 342–346 (2006). https://doi.org/10.1007/s00776-006-1020-2
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DOI: https://doi.org/10.1007/s00776-006-1020-2