Gamble FO, Yale I: Clinical Foot Roentgenology, 2nd Ed, p 187, Krieger, NewYork, 1975..
La Porta G, Mellilo T, Olinsky D: X-ray evaluation of hallux abducto valgus deformity. .JAPA 64::544. ,1974. .
Saragas NP, Becker PJ: Comparative radiographic analysis of parameters in feet with and without hallux valgus. .Foot Ankle Int 16::139. ,1995. .
Penneau K, Lutter L, Winter R: Pes planus: radiographic changes with foot orthoses and shoes. .Foot Ankle 2::299. ,1982. .
Chang TJ, Ruch JA: Lapidus arthrodesis: a different perspective. .JAPMA 84::281. ,1994. .
Bryant AR, Singer KP: A review of pre- and postoperative radiographic measurements following the Austin bunionectomy. .JAPMA 88::290. ,1998. .
Kleiger B, Greenspan A, Norman A: “Roentgenographic Examination of the Normal Foot and Ankle,” in Disorders of the Foot, Vol 1, ed by MH Jahss, WB Saunders, Philadelphia, 1982..
Gould N: Graphing the adult foot and ankle. .Foot Ankle 2::213. ,1982. .
Renton P, Stripp WJ: “The Radiology and Radiography of the Normal Foot,” in The Foot and Its Disorders, 2nd Ed, p 186, Blackwell Scientific Publications, Los Angeles, 1982..
Perlman PH, Dubois P, Siskind V: Validating the process of taking lateral foot x-rays. .JAPMA 86::317. ,1996.
Root ML, Orien WP, Weed JH: “Forefoot Deformity Caused by Abnormal Subtalar Joint Pronation,” in Normal and Abnormal Function of the Foot: Clinical Biomechanics, Vol 2, Clinical Biomechanics Corp, Los Angeles, 1977..
Shereff M, DiGiovani L, Bejjani F, et al: Comparison of non weightbearing and weightbearing radiographs of the foot. .Foot Ankle 10::306. ,1990. .
Venning P, Hardy RH: Sources of error in the production and measurement of standard radiographs of the foot. .J Bone Joint Surg 24::18. ,1945. .
Camasta CA, Pontious J, Boyd RB: Quantifying magnification in pedal radiographs. .JAPMA 81::545. ,1991. .
National Health and Medical Research Council: Administration of ionising radiation to human subjects in medical research. Australian Government Publishing Service, 1984..
Weissman S: Radiology of the Foot, p 19, Williams & Wilkins, Baltimore, 1983..
Kinsman S, Kroeker R: Leg-podiatric radiography, California State Dept of Health, Sacramento, 1973..
Whitney A: Radiographic Charting Technic, p 40, Pennsylvania College of Podiatric Medicine, Philadelphia, 1978..
Bleck E, Berzins U: Management of pes valgus. .Clin Orthop 122::85. ,1977. .
Hass M: “Radiographic and Biomechanical Considerations of Bunion Surgery,” in Textbook of Bunion Surgery, ed by J Gerbert, p 23, Futura, New York, 1981..
Aronson J, Nunley J, Frankovitch K: Lateral talocalcaneal angle in assessment of subtalar valgus: follow-up of seventy Grice-Green arthrodeses. .Foot Ankle 4::58. ,1983. .
Portney L, Watkins M: Foundations of Clinical Research: Applications to Practice, p 513, Appleton & Lange, Norwalk, 1993..
Saltzman CL, Brandser EA, Berbaum KS, et al: Reliability of standard foot radiographic measurements. .Foot Ankle Int 15::661. ,1994. .
McIlroy WE, Maki BE: Preferred placement of the feet during quiet stance: development of a standardised foot placement for balance testing. .Clin Biomech 12::66. ,1997. .
Hlavac HF: Differences in x-ray findings with varied positioning of the foot. .JAPA 57::465. ,1967. .
The purpose of this study was to ascertain if positioning of the feet for radiographic assessment produces significant variations in measured angles, and if measurements taken from radiographs taken on two separate occasions are reproducible. Weightbearing x-rays were taken of both feet of ten male healthy subjects in two standardized positions: 1) the angle and base of gait and 2) the feet together and straight-ahead positions. The radiographs were repeated 2 weeks later. The results failed to demonstrate significant differences of radiographic measurements between the two specific foot-positioning methods. No significant differences were found between radiographic measurements of normal feet taken on different occasions. A strong correlation of the repeated measures suggests that weightbearing foot radiographs can be reliably reproduced. (J Am Podiatr Med Assoc 91(5): 234-239, 2001)