Abstract
Talus partitus is a rare skeletal developmental abnormality characterized by a split of the posterior talar bone in the coronal plane. Patients with talus partitus typically present with posterior ankle pain and instability, often displaying varying degrees of chondrosis and secondary degenerative change on imaging. To date, only few case reports describing the imaging appearance of talus partitus have been published. The majority of these publications are limited to radiographic and computed tomography (CT) imaging findings, despite the ubiquity of magnetic resonance imaging (MRI). To the authors’ knowledge, there is little description of typical MRI findings of the symptomatic talus partitus in the radiologic literature. We present a series of five cases of talus partitus identified on MRI and examine pitfalls in diagnosis, differential considerations, pathophysiology, and treatment options.
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Weinstein S, Bonfiglio M. Unusual accessory (bipartite) talus simulating fracture. A case report. The Journal of Bone & Joint Surgery. 1975;57(8):1161–3.
Eichenbaum MD, Austin LS, Raikin SM. Chronic ankle pain secondary to talus partitus: two case reports. Foot Ankle Int. 2010;31(3):247–50.
Strehle E: Über Abnormitäten im Bereich der Tarsalknochen und ihre klinische Bedeutung: mit besonderer Berücksichtigung eines selbst beobachteten Falles einer Talusmißbildung: Oberreuter; 1928.
O'Rahilly R. A survey of carpal and tarsal anomalies. J Bone Joint Surg Am. 1953;35-A(3):626–42.
Zwiers R, de Leeuw PAJ, Kerkhoffs G, van Dijk CN. Talus bipartitus: a systematic review and report of two cases with arthroscopic treatment. Knee Surg Sports Traumatol Arthrosc. 2018;26(7):2131–41.
Imaging of the musculoskeletal system. Philadelphia: Saunders/Elsevier; 2008.
Zwiers R, Baltes TPA, Opdam KTM, Wiegerinck JI, van Dijk CN. Prevalence of Os Trigonum on CT imaging. Foot Ankle Int. 2018;39(3):338–42.
Rose B, Southgate C, Louette L. Bipartite talus: a case series and algorithm for treatment. Foot Ankle Surg. 2013;19(2):96–102.
Nault ML, Kocher MS, Micheli LJ. Os trigonum syndrome. The Journal of the American Academy of Orthopaedic Surgeons. 2014;22(9):545–53.
Letonoff EJ, Najarian CB, Suleiman J. The posteromedial process fracture of the talus: a case report. J Foot Ankle Surg. 2002;41(1):52–6.
Mehrpour SR, Aghamirsalim MR, Sheshvan MK, Sorbi R. Entire posterior process talus fracture: a report of two cases. J Foot Ankle Surg. 2012;51(3):326–9.
Melenevsky Y, Mackey RA, Abrahams RB, Thomson NB 3rd. Talar fractures and dislocations: a Radiologist's guide to timely diagnosis and classification. Radiographics. 2015;35(3):765–79.
Santavirta S, Seitsalo S, Kiviluoto O, Myllynen P. Fractures of the talus. J Trauma. 1984;24(11):986–9.
Karasick D, Schweitzer ME. The os trigonum syndrome: imaging features. AJR Am J Roentgenol. 1996;166(1):125–9.
Thiel E, Feibel J, Chorey N, Gorsline R. Bipartite talus: a case report. Foot Ankle Int. 2010;31(6):552–5.
Bell J, Warren M, Cotnoir S. Fracture of the Lateral Process of the Talus. 2017;47(8):579–9.
Blauth W, Harten K. Kirgis a: [frontal talus cleft--talus bipartitus]. Z Orthop Ihre Grenzgeb. 1987;125(3):302–7.
Boszczyk AM, Kolodziej L. Talus Bipartitus etiology - is neonatal infection involved? Acta Chir Orthop Traumatol Cechoslov. 2016;83(1):47–9.
Jones DM, Saltzman CL, El-Khoury G. The diagnosis of the os trigonum syndrome with a fluoroscopically controlled injection of local anesthetic. Iowa Orthop J. 1999;19:122–6.
Rammelt S, Zwipp H, Prescher A. Talus bipartitus: a rare skeletal variation: a report of four cases. J Bone Joint Surg Am. 2011;93(6):e21.
Kose O, May H, Acar B, Unal M. Symptomatic os talus secundarius: a case report and review of the literature. Skelet Radiol. 2018;47(4):553–62.
Keles-Celik N, Kose O, Sekerci R, Aytac G, Turan A, Güler F. Accessory Ossicles of the foot and ankle: disorders and a review of the literature. Cureus. 2017;9(11):e1881–1.
Mann HA, Myerson MS. Treatment of posterior ankle pain by excision of a bipartite talar fragment. J Bone Joint Surg Br. 2010;92(7):954–7.
Majeed H, McBride DJ. Talar process fractures: an overview and update of the literature. EFORT Open Rev. 2018;3(3):85–92.
Schreiber A, Differding P, Zollinger H. Talus partitus. A case report. J Bone Joint Surg Br. 1985;67(3):430–1.
Gomez Robledo J. Associated lateral process and posteromedial tubercle talus fractures with entrapment of the medial neurovascular bundle: a case report. Foot (Edinb). 2013;23(4):149–53.
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Pomeranz, C.L., Morrison, W.B., Desai, V. et al. Talus Partitus: a review of five cases diagnosed by MRI. Skeletal Radiol 49, 491–501 (2020). https://doi.org/10.1007/s00256-019-03329-3
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DOI: https://doi.org/10.1007/s00256-019-03329-3