Floating Index Metacarpal Associated with Multiple Carpometacarpal Fracture-Dislocations: a Case Report

Abstract

The floating metacarpal bone is a result of simultaneous fracture-dislocation of both carpometacarpal and metacarpophalangeal joints. This rare entity may be associated with other hand injuries. Here we present a floating index metacarpal with concomitant 3rd 5th carpometacarpal fracture-dislocations. Excellent functional short-term result was achieved after open metacarpopha langeal reduction and closed carpometacarpal reduction and percutaneous pinning.

• References

• 1 Nakashian MN, Pointer L, Owens BD, Wolf JM. Incidence of metacarpal fractures in the US population. Hand 2012; 7 (4) 426-430 doi: 10.1007/s11552-012-9442-0
• 2 Feehan LM, Sheps SB. Incidence and demographics of hand fractures in British Columbia, Canada: a population-based study. J Hand Surg 2006; 31 (7) 1068-1074 doi:10.1016/j.jhsa.2006.06.006
• 3 Drosos GI, Kayias EH, Tsioros K. “Floating thumb metacarpal” or complete dislocation of the thumb metacarpal: a case report and review of the literature. Injury 2004; 35 (5) 545-548 doi:10.1016/S0020-1383(02)00418-7
• 4 Singh D, Krishna LG, Dhaka S, Kumar S, Arora S. Rare double fracture-dislocation of the thumb: a case report and review of the literature. Chin J Traumatol = Zhonghua Chuang Shang Za Zhi / Chin Med Assoc 2013; 16 (4) 240-242
• 5 Jackson MP, Clasper JC. “The floating metacarpal”—fracture dislocation of the head and base of the index metacarpal. Inj Extra 2005; 36 (4) 87-89 doi:10.1016/j.injury.2004.08.033
• 6 Mnif H, Zrig M, Koubaa M, Jawahdou R, Hammouda I, Abid A. Un cinquième métacarpien flottant. À propos d’un cas. Chir Main 2009; 28 (5) 310-313 doi:10.1016/j.main.2009.06.005
• 7 Lüninghake FJ, Yarar S, Rueger J, Schädel-Höpfner M. Carpometacarpal fractures and fracture dislocations of rays 2-5. Unfallchirurg 2014; 117 (4) 299-306 doi:10.1007/s00113-013-2509-8
• 8 McNemar TB Howell JW Chang E Management of metacarpal fractures. J Hand Ther 16 (2):143-151. doi:10.1016/S0894-1130(03)80009-1
• 9 El-Shennawy M, Nakamura K, Patterson RM, Viegas SF. Three-dimensional kinematic analysis of the second through fifth carpometacarpal joints. J Hand Surg 2001; 26 (6) 1030-1035 doi:10.1053/jhsu.2001.28761
• 10 Marcotte AL, Trzeciak MA. Nonoperative treatment for a double dislocation of the thumb metacarpal: a case report. Arch Orthop Trauma Surg 2008; 128 (3) 281-284 doi:10.1007/s00402-007-0333-8