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Proximal hamstring tendon avulsion surgery: evaluation of the Perth Hamstring Assessment Tool

Knee Surgery, Sports Traumatology, Arthroscopy volume 25, pages 1936–1942 (2017)Cite this article

Abstract

Purpose

The purpose of the present study was to validate a new scoring system for proximal hamstring injury—the Perth Hamstring Assessment Tool (PHAT).

Methods

This is a prospective series of 74 consecutive proximal hamstring surgical repairs in 72 patients, with a median age of 50.5 years (range 16–74). Patients completed the PHAT, SF12 Health Survey and Lower Extremity Functional Scale (LEFS). The scoring system was validated by calculating its internal consistency, reproducibility, reliability and sensitivity to change. Construct validity was evaluated using Pearson’s correlation analysis to examine the strength of association between the PHAT, LEFS and SF-12 scores.

Results

The PHAT showed high completion rate (100 %), high internal consistency (Cronbach’s alpha 0.80), high reproducibility (ICC 0.84) and high sensitivity to change. There was moderate correlation with the LEFS and low correlation with the Physical Component Score of the SF-12.

Conclusion

This study has validated the PHAT as an assessment tool for proximal hamstring tendon injuries. The new questionnaire provides a measure of outcome that is reliable and sensitive to clinically important change. This simple questionnaire provides the clinician with a quick and practical tool for assessing patients with proximal hamstring injuries: to assess pre-operative disability and monitor recovery post-operatively.

Level of evidence

II.

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Authors and Affiliations

  1. Department of Orthopaedic Surgery, Fremantle Hospital, Fremantle, WA, Australia

    William G. Blakeney & Simon R. Zilko

  2. Department of Orthopaedic Surgery, Sir Charles Gairdner Hospital, Nedlands, WA, Australia

    William G. Blakeney & Natalie E. Schupp

  3. Shenton Park Physiotherapy Clinic, Shenton Park, WA, Australia

    Steven J. Edmonston

  4. Department of Orthopaedic Surgery, Mount Hospital, Perth, WA, Australia

    Peter T. Annear

  5. Perth Orthopaedic and Sports Medicine, West Perth, WA, Australia

    Peter T. Annear

Authors
  1. William G. Blakeney
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  2. Simon R. Zilko
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  3. Steven J. Edmonston
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  4. Natalie E. Schupp
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  5. Peter T. Annear
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Correspondence to William G. Blakeney.

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Blakeney, W.G., Zilko, S.R., Edmonston, S.J. et al. Proximal hamstring tendon avulsion surgery: evaluation of the Perth Hamstring Assessment Tool. Knee Surg Sports Traumatol Arthrosc 25, 1936–1942 (2017). https://doi.org/10.1007/s00167-016-4214-y

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Keywords

  • Proximal hamstring tendon
  • Validation
  • Questionnaire
  • Surgical repair