ClinicalTrials.gg
CompletedNCT04311216Updated Jul 22, 2024Results posted

Shoulder Instability in Children: Muscle Activity and Movement

An observational study in Shoulder Injuries, Musculoskeletal Injury and Pediatric ALL, sponsored by Robert Jones and Agnes Hunt Orthopaedic and District NHS Trust. Completed at 1 site in United Kingdom. Open to participants aged 8 Years to 18 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-07-22.

Primary conditionShoulder DislocationRegistry: Shoulder InjuriesReclassifiedWhy we changed it
Registry
Shoulder Injuries — the first condition term the registry derived for this study.
ClinicalTrials.gg
Shoulder Dislocation
Why
  1. The study's listed conditions name Shoulder Dislocation, a narrower term within Shoulder Injuries.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Robert Jones and Agnes Hunt Orthopaedic and District NHS Trust · Observational

Study type
Observational
Model
Cohort
Time perspective
Cross-sectional
Enrollment
30
Ages
8 Years to 18 Years
Sex
All
01

Study summary

The aim of this study is to identify factors responsible for recurrent shoulder instability in children. Shoulder instability, i.e. complete or partial dislocation of the shoulder joint, is common in children, resulting in pain and disability. Recurrent instability can damage the shoulder joint resulting in the premature development of arthritis.

Rehabilitation approaches are preferred over surgical methods for the growing child e.g. physiotherapy to restore movement and prevent further instability. Existing rehabilitation procedures are based on addressing factors assumed to be responsible for instability e.g. physiotherapists may try to increase shoulder stability by building up the shoulder muscles to compensate for the damaged ligaments. It is evident however that the mechanisms of shoulder instability are not well understood, as failure rates for physiotherapy are high, with 70% - 90% of children continuing to suffer recurrent instability. This is an observational, cross-sectional study of children (aged 8 to 18) presenting with shoulder instability of any origin, traumatic or atraumatic (n=15) and an age-matched sample (n=15) with no history of shoulder problems. Muscle activity and movement pattern differences will be measured using non-invasive 3D motion capture and surface electromyography, to identify factors responsible for instability. Only a single visit to the site will be required (The Orthotic Research \& Locomotor Assessment Unit (ORLAU) based at The Robert Jones \& Agnes Hunt Orthopaedic Hospital NHS Foundation Trust in Oswestry.).

If investigators better understand the mechanisms associated with instability, physiotherapy interventions to reduce dislocations and disability can be better targeted. If specific patterns of activity associated with instability are identified, these could be addressed through personalised and improved exercise prescription and rehabilitation. Additionally, causes of instability for which physiotherapy may not be appropriate may be identified, therefore ensuring patients are referred to the correct service in a timely manner, improving patient outcomes and allocating physiotherapy resources more appropriately. Participants will be recruited from musculoskeletal/orthopaedic outpatient clinics. This study is funded by the Private Physiotherapy Education Foundation.

02

Conditions studied

  • Shoulder Injuries
  • Musculoskeletal Injury
  • Pediatric ALL
  • Dislocation, Shoulder
  • Instability, Joint
03

In context

Shoulder Dislocation Reclassified

105 studies on the registry are indexed under Shoulder Dislocation; 22 are open to participants now.

This study's enrollment of 30 is below the median of 86 across 28 observational studies indexed under Shoulder Dislocation.

Browse Shoulder Dislocation studies →

Lead sponsor

Robert Jones and Agnes Hunt Orthopaedic and District NHS Trust is the lead sponsor of 36 studies on the registry; 16 are open to participants now.

Compared within Shoulder Dislocation, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Shoulder Injuries. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
8 Years to 18 Years
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

This study will consist children aged between eight and 18 years of age. The two groups will include children with (shoulder instability participants) and without shoulder instability (age matched contols).

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

Shoulder instability participants

  • Children aged between 8 to 18 years of age
  • Subjective reports of instability with additionally symptomatic instability in the clinical assessment criteria below
  • Symptomatic instability on clinical assessment in at least one direction, confirmed by a positive clinical finding (apprehension, guarding, laxity) during the sulcus, apprehension or anterior and posterior shift load tests.
  • All forms of instability including multidirectional instability, atraumatic and traumatic subluxations and dislocations.
  • Children presenting with an initial or recurrent episode of instability
  • Children undergoing current management or rehabilitation for their shoulder at the time of the study
  • Patients with surgically managed shoulder instability who have since had a further episode of shoulder instability

Age matched controls

  • Children aged between 8 to 18 years of age

Exclusion criteria

Exclusion Criteria:

Shoulder instability participants

  • Children with co-existing neurological pathologies or deficits
  • Surgically managed patients who have not had episodes of instability following the intervention

Age matched controls

  • Any previous presentation to a health care professional with a diagnosis of shoulder instability
  • Children with a previous shoulder injury within the last 3 months on the arm being assessed that has not resolved
  • Children with co-existing neurological pathologies or deficits
  • Children who have had a previous surgical intervention on the arm being assessed
  • Children currently undergoing or awaiting medical management, diagnostic investigations or rehabilitation on the arm being assessed
05

Study design

Observational model
Cohort
Time perspective
Cross-sectional
Enrollment
30 participants (actual)
Patient registry
No

Groups and cohorts

  • Shoulder instability participants

    Participants with previous a previous episode(s) of shoulder instability

    Other: 3D movement analysis with surface electromyography

  • Age matched controls (no instability)

    Participants with no previous a previous episode(s) of shoulder instability

    Other: 3D movement analysis with surface electromyography

Interventions

  • Other3D movement analysis with surface electromyography

    Single measurement session of 3D movement analysis with surface electromyography for upper limb movements

06

What researchers measure

Primary outcomes

  1. Number of Shoulder Instability Episodes (Subluxation and Dislocations)

    Number of shoulder instability episodes (subluxation and dislocations)

    Time frame: One year

  2. Kinematics

    Kinematic variables related to the movement tasks - Flexion

    Time frame: On admission

Secondary outcomes

  1. Kinetics

    Kinetic variables related to the movement tasks

    Time frame: On admission

  2. Surface Electromyography

    Muscle activity patterns related to the movement tasks

    Time frame: On admission

07

Results

Posted Jul 22, 2024

Participant flow

Participant flow — Overall Study
MilestoneShoulder Instability ParticipantsAge Matched Controls (no Instability)
Started1515
Completed1315
Not completed20

Outcome measures

PrimaryNumber of Shoulder Instability Episodes (Subluxation and Dislocations)

Number of shoulder instability episodes (subluxation and dislocations)

Time frame:
One year

Results for this outcome have not been posted.

PrimaryKinematics

Kinematic variables related to the movement tasks - Flexion

Time frame:
On admission
Reported as:
Mean · degrees
Kinematics
degreesShoulder Instability ParticipantsAge Matched Controls (no Instability)
TH elevation plane92 (81 to 102)94 (86 to 102)
TH elevation angle133 (122 to 144)130 (125 to 134)
TH rotation100 (87 to 113)99 (90 to 108)
TS protraction25 (21 to 29)24 (21 to 27)
TS rotation39 (37 to 42)40 (40 to 44)
TS tilt29 (23 to 36)33 (27 to 38)
GHJ elevation plane74 (63 to 85)74 (66 to 81)
GHJ elevation angle101 (89 to 112)91 (87 to 96)
GHJ rotation89 (79 to 99)100 (92 to 108)
ACJ protraction32 (25 to 39)34 (29 to 39)
ACJ rotation16 (13 to 20)17 (14 to 19)
ACJ tilt31 (28 to 34)32 (28 to 36)
SCJ protraction25 (20 to 29)24 (21 to 27)
SCJ elevation11 (10 to 12)11 (10 to 12)
SecondaryKinetics

Kinetic variables related to the movement tasks

Time frame:
On admission

Results for this outcome have not been posted.

SecondarySurface Electromyography

Muscle activity patterns related to the movement tasks

Time frame:
On admission

Results for this outcome have not been posted.

Adverse events

Collected over 1 year. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Shoulder Instability Participants0/15 (0%)0/15 (0%)0/15 (0%)
Age Matched Controls (no Instability)0/15 (0%)0/15 (0%)0/15 (0%)

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Shoulder Instability ParticipantsAge Matched Controls (no Instability)Total
<=18 years151530
Between 18 and 65 years000
>=65 years000
Age, Continuous
Age, Continuous(years)Shoulder Instability ParticipantsAge Matched Controls (no Instability)Total
Mean13.9 ± 2.913.3 ± 3.113.6 ± 3.0
Sex: Female, Male
Sex: Female, Male(Participants)Shoulder Instability ParticipantsAge Matched Controls (no Instability)Total
Female9716
Male6814
Race and Ethnicity Not Collected
Race and Ethnicity Not Collected(Participants)Shoulder Instability ParticipantsAge Matched Controls (no Instability)Total
Count of participants——0
Region of Enrollment
Region of Enrollment(participants)Shoulder Instability ParticipantsAge Matched Controls (no Instability)Total
United Kingdom151530
08

Study locations

1 site
  • The Robert Jones & Agnes Hunt Orthopaedic Hospital NHS Foundation Trust
    Oswestry, SY10 7AG, United Kingdom
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No — The anonymised final trial dataset and anonymised 3D movement data files will be stored on the Keele University Data repository where they will be assigned a DOI. The anonymised data will be available subject to an appropriate request for research and academic use.

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Feb 2021 to primary completion in Aug 2023, 30 months.

Results were first posted in Jul 2024, 11 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 11, 2020
First posted
Mar 17, 2020
StartActual
Feb 1, 2021
Primary completionActual
Aug 8, 2023
CompletionActual
Aug 8, 2023
Results first posted
Jul 22, 2024
Last update
Jul 22, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jul 22, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04311216
Lead sponsor
Robert Jones and Agnes Hunt Orthopaedic and District NHS Trust
Collaborators
University of Liverpool, University of Aberdeen, Bournemouth University, Keele University
Responsible party
Sponsor
First posted
Mar 17, 2020
Start date
Feb 1, 2021
Primary completion
Aug 8, 2023
Completion
Aug 8, 2023
Results posted
Jul 22, 2024
Last update
Jul 22, 2024

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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