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ORIGINAL RESEARCH:

The Minimum Clinically Important Difference on the VISA-A and LEFS for Patients with Insertional Achilles Tendinopathy.

Authors: McCormack J, Underwood F, Slaven E, Cappaert T

The VISA-A and LEFS are two measures commonly utilized for patients with insertional Achilles tendinopathy (IAT). Previous authors have estimated the MCID for the VISA-A, but a MCID has not been formally established.  The MCID for the LEFS has been established for patients with lower extremity conditions in general, but it is not clear if this MCID is applicable to patients with IAT.  Therefore, the purpose of this study was to establish the minimum clinically important difference (MCID) on the Victorian Institute of Sport Assessment - Achilles Questionnaire (VISA-A) and the Lower Extremity Functional Scale (LEFS) for patients with IAT.  The MCID for the VISA-A was 6.5 points and the MCID for the LEFS was 12 points. The authors concluded that the VISA-A and LEFS are both useful outcome measures to assess response in patients with IAT.

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