Functional outcome of tarsometatarsal joint fracture dislocation managed according to Myerson classification

Yu, Xiao; Pang, Qing-Jiang; Yang, Chang-Chun

Affiliations

¹Department of Orthopedics, Ningbo No.2 Hospital, Ningbo, 315010, Zhejiang, China

Abstract and keywords

Objective: To summarize the functional outcome of tarsometatarsal joint fracture-dislocation managed according to Myerson classification.

Methods: Total eighty cases of tarsometatarsal joint fracture-dislocation were treated from Mar 2004 to Feb 2012. According to the Myerson classification, there were 14 cases in type A, 12 cases in type B1, 28 cases in type B2, 11 cases in type C1 and 15 cases in type C2. All the cases were treated with open reduction and internal fixation and the incisions and implants were also selected according to the Myerson classification. X-ray was examined during the follow-up period and functional evaluation was carried out by American Orthopaedic Foot and Ankle Society (AOFAS) midfoot score system. Analysis of variance was used to test the different types of Myerson classification.

Results: Sixty eight patients got a mean follow-up of 24 months (15-36 months). No patient suffered from infection, skin flap necrosis and X-ray showed there were no implants loosening or breakage. The mean AOFAS score was 88.4(47-100) and excellent and good result was 89.7%. The differences among Myerson classifications showed that there were statistical significance between type B and type A, type C (P<0.05) Three patients suffered from severe pain and difficult walking, X-ray showed the ambiguity of the joint space, which can be diagnosed as posttraumatic arthritis. One patient had arthrodesis finally.

Conclusion: The Myerson classification is helpful to make preoperative plan and judging prognosis to the tarsometatarsal joint injuries. In type B, single or double incisions with screw or plate fixation is enough, while in type A and type C, double or triple incisions with screw or plate fixation in medial joints and Kirschner wire fixation in lateral joints are needed. Postoperatively, the type B patients had better prognosis than type A and type C patients. However, the concomitant injuries around the tarsometatarsal joint were not included in Myerson classification, which is the limitation but cannot be neglected.

Keywords: Tarsometatarsal joint, Fracture-dislocation, Open reduction, Internal fixation

Links

PubMed: 25097515

PubMedCentral: PMC4121696

WoS: 000338632500020

History

Received: 2013-08-17

Revised: 2014-03-30

Accepted: 2014-04-02

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Cited By (1)

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