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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT05239520
Other study ID # UoL001656
Secondary ID RPG185Robert Jon
Status Completed
Phase
First received
Last updated
Start date March 25, 2022
Est. completion date October 21, 2022

Study information

Verified date January 2023
Source University of Liverpool
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

The aim of this study is to identify factors for shoulder instability in people with Facioscapulohumeral dystrophy (FSHD). FSHD is a non-life limiting condition with symptoms presenting in the second decade of life (Evangelista et al., 2016). Between 2500 to 3000 people are diagnosed with FSHD in the UK and it is the third most common dystrophy. The overall prevalence is 1: 20,000 and on average 52 people are newly diagnosed with FSHD each year (Emery, 1991; Padberg et al., 1995; UK, 2020) As the disease progresses, patients lose the ability to adequately control muscles around the shoulder girdle, possibly contributing to the development of shoulder instability i.e. partial or complete dislocation of the shoulder joint (Bergsma, Cup, Geurts, & De Groot, 2015; Bergsma, Cup, Janssen, Geurts, & de Groot, 2017; Mul et al., 2016). Loss of control around the shoulder is also thought to contribute to pain and a reduced capacity to perform tasks above shoulder height. Additionally, the development of fatigue and chronic pain further limit patient's abilities and engagement with rehabilitation. If we better understand the mechanisms associated with instability, we can better target physiotherapy interventions to improve rehabilitation. If we identify specific patterns of activity associated with instability, these could be addressed through personalised and improved exercise prescription and rehabilitation. Additionally, we may identify causes of instability for which physiotherapy or exercise programmes may not be appropriate, therefore ensuring patients are referred to the correct service in a timely manner, improving patient outcomes and allocating resources more appropriately.


Description:

Shoulder instability in Facioscapulohumeral dystrophy (FSHD) is a significant problem, with over 80% of patients reporting that it affects their ability to perform activities of daily living (Faux-Nightingale , 2021). The underlying mechanisms of shoulder instability in FSHD are not well understood. It is thought that instability at the shoulder subsequently contributes to the development of shoulder pain and progressive loss of function, particularly during tasks performed above head height. Despite a large proportion of patients reporting shoulder instability that affects function, only 50% report engaging in some form of upper limb rehabilitation (Faux-Nightingale , 2021). Both surgical and nonsurgical interventions are based on a current understanding of the associated mechanisms that may include muscle wasting, weakness, changes to the structure of the muscle tissue or inappropriate muscle coordination (Bergsma et al., 2014). As there is no cure for FSHD, rehabilitation is fundamental in the management of the condition. Overall, rehabilitation strategies are aimed at maintaining existing levels of function, avoiding complications associated with progression of the disease and targeting mechanisms associated with the development of instability. e.g. exercises to improve co-ordination of the shoulder muscles if the source of instability is dysfunctional muscle control. Rehabilitation in patients with FSHD is complex and it is therefore important that rehabilitation is appropriately targeted. There is limited evidence to support the effectiveness of existing rehabilitation strategies in FSHD. In order for rehabilitation to be appropriately allocated disease mechanisms should be understood. Existing mechanisms of shoulder instability in FSHD are not well understood and may explain why more than 50% of patients are not engaging in any form of upper limb rehabilitation. Shoulder stability results from complex mechanisms comprising of finely balanced forces in ligaments, muscles and joint surfaces (Ameln, Chadwick, Blana, & Murgia, 2019). Currently, we are unable to capture this complexity to quantify instability during dynamic upper limb tasks performed during clinical assessment and rehabilitation (Marchi, Blana, & Chadwick, 2014). Biomechanical or mathematical modelling of this complex structure can help to understand the mechanisms associated with instability and predict outcomes for surgical and non-surgical interventions (Arnold, Liu, Ounpuu, Swartz, & Delp, 2006; Delp et al., 2007; Laracca, Stewart, Postans, & Roberts, 2014). Loading on internal structures that cannot be measured can also be estimated by this approach. This project is therefore a fundamental step, in the development of biomechanical models which can ultimately be used to further our understanding of the shoulder, specifically behaviour of the articulating bony surfaces and muscle forces. In this application we hope to identify mechanisms for shoulder instability which may help better inform rehabilitation and surgical decision making in the management of FSHD.


Recruitment information / eligibility

Status Completed
Enrollment 14
Est. completion date October 21, 2022
Est. primary completion date October 21, 2022
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years and older
Eligibility People affected by FSHD Inclusion Criteria: Stratified groups - Able to lift arms above shoulder height (n=3) - Unable to lift arms above shoulder height (n=2) - Post Scapulothoracic shoulder arthrodesis (n=2) - Diagnosed with FSHD - Aged 18 years and older Exclusion Criteria: - Recent trauma to the shoulder within the last 3 months on the arm being assessed that has not resolved - Recent surgery to the thorax or upper limb in the last 6 months - Previous history of fracture to the shoulder joint being assessed - Co-existing neurological pathologies or additional musculoskeletal injuries to the upper limb being assessed Age Matched Controls Inclusion Criteria - People aged 18 years and older Exclusion Criteria: - Any previous presentation to a health care professional with a diagnosis of shoulder instability - Previous shoulder injury within the last 3 months on the arm being assessed that has not resolved - Any co-existing neurological pathologies or deficits - Any previous surgical intervention on the arm being assessed - Currently undergoing or awaiting medical management, diagnostic investigations or rehabilitation on the arm being assessed

Study Design


Related Conditions & MeSH terms


Intervention

Other:
3D movement analysis with surface electromyography and ultrasound
Single measurement session of 3D movement analysis with surface electromyography for upper limb movements and ultrasound measurements of upper muscles

Locations

Country Name City State
United Kingdom Robert Jones & Agnes Hunt Orthopaedic Hospital Oswestry Gobowen

Sponsors (4)

Lead Sponsor Collaborator
University of Liverpool Bournemouth University, Keele University, Robert Jones and Agnes Hunt Orthopaedic and District NHS Trust

Country where clinical trial is conducted

United Kingdom, 

Outcome

Type Measure Description Time frame Safety issue
Primary Kinematic features of movement: joint angles (degrees) Range of movement values and associated derivatives will be reported for the associated movement tasks. Day 1
Primary Kinematic features of movement: displacement (mm) Displacement values and associated derivatives will be reported for associated movement tasks. Day 1
Primary Kinetic variables related to the movement tasks: Force (Nm) Force values for the strength testing, joint contact and muscle force values will be reported for associated movement tasks. Day 1
Primary Muscle activity patterns related to the movement tasks: Surface electromyography (mv) Muscle activity patterns related to the movement tasks will be reported for associated movement tasks. Day 1
Primary Ultrasound imaging: Muscle architecture parameters (mm) Muscle architecture parameters where possible (Muscle thickness) Day 1
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