Introduction
Achilles tendinopathy is characterised by pain, stiffness and a loss of function in both athletic and sedentary populations1 2 with exercise rehabilitation recommended as best management for this condition.3–6 Various assessment tools exist for mid-portion Achilles tendinopathy and have been used for diagnosis, as study inclusion criteria and as outcome measures to monitor progress.5 7–11 Examples include a patient’s self-reported pain with functional tasks, validated patient-reported outcome measures or an objective assessment of functional capacity.12 13 However, not all tools have been validated,14 thus it is valuable to find out what is being used (and how) in clinical practice regarding the assessment and monitoring of Achilles tendinopathy.
There is little consistency between published studies in the assessments used to quantify demographic information, diagnose the condition or assess improvements in different systems (eg, tendon structure or muscle force production) relevant to rehabilitation.12 13 15 For instance, across exercise rehabilitation trials to treat mid-portion Achilles tendinopathy, we identified numerous assessment tools used to assess different aspects of pain and function,12 13 yet few reported data related to their reliability and validity.12 13 The lack of data on the identified assessment reliability is an issue as it undermines any analysis to determine if change has truly occurred16 and likely makes the diagnosis and monitoring of mid-portion Achilles tendinopathy even more challenging for clinicians, because if research studies are not using consistent assessments how can we expect that from clinicians?
In 2019, three international consensus statements (ICON 2019) were developed by expert clinicians and researchers with a special interest in tendons as well as patients with tendinopathy, to consolidate our understanding of tendinopathy, including tendon terminology,17 reporting of participant characteristics18 and core health domains.19 In the absence of ‘gold-standard’ diagnostic criteria for tendinopathy and a lack of consensus by the expert researchers and clinicians around diagnosis, and inclusion criteria for tendinopathy research, one of the ICON 2019 consensus papers reported standards for reporting participant characteristics to provide greater detail of who is included within research studies to facilitate clinical translation.18 Another ICON 2019 consensus statement provided a list of nine core health domains that should be considered in tendinopathy research: (1) patient rating of the condition; (2) participation in life activities; (3) pain on activity/loading; (4) function; (5) psychological factors; (6) physical function capacity; (7) disability; (8) quality of life; and (9) pain over a specified time.19 Furthermore, a number of other domains identified within the ICON 2019 statement of core health domains were considered of little importance in monitoring19; however, some did feature within the ICON 2019 consensus statement of reporting participant characteristics and are important to consider when investigating the diagnosis and monitoring of tendinopathy in clinical practice: (1) tendon structure; (2) palpation; and (3) range of motion.18 These health domains represent the first step in consensus on what outcome measures are important to clinicians, patients and researchers.
The irony is that clinicians have it drilled into them to be evidence based, but when it comes to assessment tools for mid-portion Achilles tendinopathy the research studies they read do not use uniform diagnostic criteria or assessment tools, and the experts cannot reach consensus on exactly what is needed to diagnose the condition. Therefore, can we really expect clinicians to select the most valid and reliable assessment tools?
To address the confusion within the research, the Achilles Tendinopathy International Consensus Sub-Group has worked to identify all assessments used within clinical studies of Achilles tendinopathy and allocate them under the ICON core health domain of ‘best fit’.14 This project involves further reviews and a Delphi study to determine which outcome measures are most valid and reliable and make recommendations regarding which assessments best represent each health domain. However, this body of work does not definitively indicate what current practice ‘at the coalface’ is for clinicians when diagnosing and monitoring Achilles tendinopathy. Specifically, there is merit in knowing what assessments clinicians use and what assessments clinicians consider ideal practice when diagnosing and monitoring Achilles tendinopathy. Further to this, if discrepancy exists between what clinicians do and what they consider ideal practice, it is vital we understand what the barriers to ideal practice are so that strategies can be implemented to address the barriers.
Objectives
The primary objective of this study was to explore the barriers preventing clinicians from implementing what they think is ideal practice as it relates to using tools to aid diagnosis and monitor progress in mid-portion Achilles tendinopathy. Our secondary objectives were to describe the assessments (assigned to an outcome measure domain they represent) employed by clinicians in their own practice to aid with (a) diagnosis and (b) monitoring progress in Achilles tendinopathy and explore which outcome measure domains clinicians believe to be the most and least important when managing patients with Achilles tendinopathy.