Synostosis of carpal bones originates from lack of cavitation at the site of the future joint space with subsequent chondrification and ossification during the 4th to 8th weeks of intrauterine life. It is mostly seen as a chance finding discovered on radiographs. These coalitions are often asymptomatic, but can give complaints after trauma. We report six patients with different congenital carpal coalitions. These cases include synostoses of: scaphoid and trapezium, scaphoid and trapezium with a large scapholunate distance, lunate and triquetrum, capitate and trapezoid,capitate and hamate, triquetrum and pisiform. We also give a review of the literature and treatment proposal.
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A. Spaans and A. Beumer, "Carpal Coalitions; Failures of Differentiation of the Carpus: A Description of Cases," Open Journal of Radiology, Vol. 3 No. 1, 2013, pp. 1-6. doi: 10.4236/ojrad.2013.31001.
 P. Singh, A. Tuli, R. Choudhry and A. Mangal, “Inter carpal Fusion—A Review,” Journal of the Anatomical Society of India, Vol. 52, No. 2, 2003, pp. 183-188.
 H. S. Hosalkar, B. A. Shaw, L. C. Carrie and H. Read, “Bilateral Congenital Capitate-Hamate Fusion,” Images in radiology, Vol. 47, No. 3, 2001, pp. 208-209.
 T. J. Delaney and S. Eswar, “Carpal Coalitions,” Journal of Hand Surgery, Vol. 17, No. 1, 1992, pp. 28-31.
 R. O’Rahilly, “A Survey of Carpal and Tarsal Anomalies,” The Journal of Bone & Joint Surgery, Vol. 35, No. 3, 1953, pp. 626-642.
 T. Apard and F. Laumonier, “Congenital Scaphotrapezial Synostosis Associated with a Carpal Tunnel Syndrome: A Case Report,” Chirurgie de la Main, Vol. 28, No. 1, 2009, pp. 33-36. doi:10.1016/j.main.2008.11.008
 C. L. Barnes, G. T. Frazier and M. L. Hixson, “Bilateral Congenital Fusion of the Scaphoid and Trapezium in Identical Twins,” Orthopedics, Vol. 15, No. 6, 1992, pp. 739-741.
 M. B. Henry, “Anomalous Fusion of the Scaphoid and the Greater Multangular Bone,” Archieves of Surgery, Vol. 50, No. 5, 1945, pp. 240-241.
 C. Ingram, R. F. Hall and M. Gonzal, “Congenital Fusion of the Scaphoid, Trapezium, Trapezoid and Capitate,” Journal of Hand Surgery, Vol. 22, No. 2, 1997, pp. 167-168. doi:10.1016/S0266-7681(97)80053-8
 K. Kaneko, K. Matsumara and Y. Maruyama, “Congenital Synostosis between the Scaphoid and the Trapezium as a Cause of Tenosynovitis simulating de Quervain’s Disease,” Chirurgie de la Main, Vol. 19, No. 3, 2000, pp. 187-190. doi:10.1016/S1297-3203(00)73478-0
 S. Knezevich and M. Gottesman, “Symptomatic Scapho lunatotriquetral Carpal Coalition with Fusion of the Capitometacarpal Joint,” Clinical Orthopedics, Vol. 251, 1990, pp. 153-156.
 A. B. Minnaar de Villiers, “Congenital Fusion of the Lunate and Triquetral Bones in the South African Bantu,” The Journal of Bone & Joint Surgery, Vol. 34B, No. 1, 1952, pp. 45-48.
 V. M. Metz, S. M. Schimmerl, L. A. Gilula, S. F. Viegas and P. Saffar, “Wide Scapholunate Joint Space in Luno triquetral Coalition: A Normal Variant?” Radiology, Vol. 188, No. 2, 1993, pp. 557-559.
 H. Park and N. J. Goddard, “Re: Scaphoid Fracture in Bilateral Congenital Synostosis of the Scaphoid and Trapezium,” Journal of Hand Surgery, Vol. 34, No. 2, 2009, pp. 271-272.
 S. Peters and J. Colaris, “Carpal Coalition: Symptomatic Incomplete Bony Coalition of the Capitate and Trapezoid— Case Report,” Journal of Hand Surgery, Vol. 36, No. 8, 2011, pp. 1313-1315. doi:10.1016/j.jhsa.2011.05.011
 C. Resnik, J. D. Grizzard, B. P. Simmons and I. Yaghmai, “Incomplete Carpal Coalition,” American Journal of Roentgenology, Vol. 147, No. 2, 1986, pp. 301-304.
 B. Senecail, H. Perruez and D. Colin, “Numerical Variants and Congenital Fusions of Carpal Bones,” Morphologie, Vol. 91, No. 292, 2007, pp. 2-13.
 E. Smith-Hoefer and R. M. Szabo, “Isolated Carpal Syn chondrosis of the Scaphoid and Trapezium,” The Journal of Bone & Joint Surgery, Vol. 67, No. 2, 1985, pp. 318-320.
 M. P. Somford, M. F. A. M. Sturm and J. P. A. M. Vroemen, “Reconstruction of Isolated Scaphoid Dislocation with Carpal Dissociation, associated with a Carpal Anomaly,” Strategies in Trauma and Limb Reconstruction, Vol. 5, No. 2, 2010, pp. 105-110.
 M. H. Sy, O. Diarra, M. Diagne, M. M. Diouf, P. Sene and S. Diouf, “Pyramido-Lunar Fusion in Black Africans. Apropos of 32 Cases,” Annales de Biologie (Paris), Vol. 39, No. 4-5, 1996, pp. 208-212.
 J. Terrence Jose Jerome, “Congenital Fusion of the Trapezium and Trapezoid,” Romanian Journal of Morphology and Embryology, Vol. 49, No. 3, 2008, pp. 417-419.
 L. Tsionos, J. L. Drapé and D. Le Viet, “Bilateral Pisiform-Hamate Coalition Causing Carpal Tunnel Syndrome and Tendon Attrition. A Case Report,” Acta Orthopaedica Belgica, Vol. 70, No. 2, 2004, pp. 171-176.
 J. Weinzweig, H. Kirk Watson, T. J. Herbert and J. A. Shaer, “Congenital Synchondrosis of the Scaphotrapezio Trapezoidal Joint,” Journal of Hand Surgery, Vol. 22, No. 1, 1997, pp. 74-77. doi:10.1016/S0363-5023(05)80182-0
 S. M. Wilson, P. Moreel and E. Roulot, “Symptomatic Congenital Fusion of the Scaphoid and the Trapezium,” Journal of Hand Surgery, Vol. 31, No. 5, 2006, p. 581.
 P. H. Zeplin, R. G. Jakubietz and K. Schmidt, “Symptomatic Congenital Pisiform Hamate Coalition,” Annals of Plastic Surgery, Vol. 65, No. 4, 2010, pp. 396-397.
 D. E. Bonasia, P. Phisitkul, C. L. Saltzman, A. Barg and A. Amendola, “Technical Note With Video Illustration. Arthroscopic Resection of Talocalcaneal Coalitions,” Arthroscopy, Vol. 27, No. 3, 2011, pp. 430-435.
 A. L. Sarage, G. V. Gambardella, B. Fullem, A. Saxena and D. S. Caminear, “Cuboid-Navicular Tarsal Coalition: Report of a Small Case Series with Description of a Surgical Approach for Resection,” Journal of Foot and Ankle Surgery, Vol. 51, No. 6, 2012, pp. 783-786.