La evaluación pre-operativo radiográfica en la deformacion del pulgar.(Inglés)

A. S. Aster, , a, M. C. Forsterb, R. A. Rajanb, K. J. Patela, R. Asirvathama and C. Gilliesc

a Lincoln County Hospital, Lincoln LN2 5QY, UK b Leicester Royal Infirmary, Infirmary Square, Leicester L1 5WW, UK c Department of Epidemiology and Public Health, 22-28, Princes Road West, Leicester University, Leicester LE1 6TP, UK

Abstract

Objective:
The aim of this study was to assess the inter- and intra-observer reliability of the measurement of intermetatarsal angle (IMA), hallux valgus angle (HVA) and the diagnosis of joint congruency of the first metatarsophalangeal (MTP) joint.

Method:
Five observers assessed 50 pre-operative standing foot radiographs on two occasions. Five published methods of measuring IMA and HVA were used. Also the first MTP joint congruency was assessed.

Results:
The mean IMA and HVA measurements varied between methods on both occasions (P<0.0001). Analysis of variance showed both method and observer variations were significant for IMA, but not for HVA. Diagnosis of congruency showed good agreement (k=0.608) over two occasions, although this did vary by observer.