Chinese Journal Of Clinical Anatomy ›› 2013, Vol. 31 ›› Issue (2): 158-160.

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The study of stress radiograph in the evaluation of trapeziometacarpal joint laxity

ZHANG Bo, KAN Shi-lian   

  1. ZHANG Bo, KAN Shi-lian
  • Received:2012-11-01 Online:2013-03-25 Published:2013-04-08

Abstract:

Objective Modified stress-positioned radiograph technique was used to measure carpometacarpal joint laxity with its consistence evaluated. Method   Stress -positioned radiographs were obtained from 66 patients whose carpometacarpal joint had no trauma, arthritis and surgeric history. Two measurements were performed by two hand surgeons: the width of radial subluxation of the first metacarpal base and the width of the first metacarpal articular surface; the ratio between them was calculated. T-test were performed to assess the reliability and difference between male and female.  Result   The average of the RS measurement is (4.27±1.83) mm (range 1~8mm)and the AW measurement is (13.52±1.89)mm (range 10~17.3 mm). The average RS/AW subluxation ratio is (0.32±0.11). Women showed greater value of the ratio than men(P=0.026). The measurements of two hand surgeon showed high consistence (P=0.23).   Conclusion The stress-positioned radiograph could evaluate joint laxity of the trapeziometacarpal articulation with high consistence.

Key words: Trapeziometacarpal joint, Stress view radiograph, Laxity

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