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NCT Number: NCT07644624

Sling vs. Dynamic Shoulder Stabilizer After Soft Tissue Shoulder Instability Surgery (SLIDY)

This randomized controlled trial seeks to address a significant clinical gap by evaluating the outcomes of two postoperative immobilization methods following arthroscopic soft tissue surgery for anterior shoulder instability: a standard static arm sling and a dynamic shoulder orthosis.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Bellvitge University Hospital

L'Hospitalet de Llobregat, Catalonia, 08907, Spain

Location status: Recruiting

Location contact

Abdul-ilah Hachem, MD

CONTACT

[email protected]

+4609406030

Abdul-ilah Hachem, MD

PRINCIPAL_INVESTIGATOR

Hady Ezzeddine, MD

CONTACT

[email protected]

Hady Ezzeddine, MD

SUB_INVESTIGATOR

Xavi Rius, MD

SUB_INVESTIGATOR

About this study

The present study is a pilot trial that aims to compare outcomes between patients immobilized using a standard arm sling and those managed with a dynamic shoulder orthosis (specifically, the medi® Shoulder action brace) following arthroscopic soft tissue stabilization for anterior shoulder instability. This trial will evaluate the impact of these two immobilization methods on early shoulder function, pain, recurrence, and patient satisfaction, while primarily assessing the feasibility of a future definitive trial. This is a prospective, single-center, pilot randomized controlled trial with parallel groups. Participants will be allocated in a 1:1 ratio to either the dynamic orthosis or the standard sling. The trial seeks to determine whether dynamic immobilization designed to facilitate controlled activity offers measurable advantages in early function, comfort, or recurrence risk compared to standard arm slings.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Adults aged ≥18 years undergoing arthroscopic soft-tissue stabilization for anterior shoulder instability (Bankart repair ± Hill-Sachs remplissage).
  • Ability and willingness to comply with the study protocol and scheduled follow-ups.
  • Provision of written informed consent.

Exclusion criteria

  • Significant glenoid bone loss requiring bony augmentation procedures (e.g., bone block procedures, Latarjet).
  • Concomitant rotator cuff repair or fracture fixation.
  • Contraindication to MRI (e.g., pacemaker, claustrophobia, incompatible implants).
  • Cognitive impairment, language barriers, or logistical inability to attend follow-up visits.
  • Previous ipsilateral shoulder surgery.

Treatment and study plan

Dynamic Immobilizer

Device

An adjustable strap system applied immediately post-surgery that permits movement of the shoulder joint while simultaneously limiting potentially harmful ranges of motion and translations. It is worn continuously for 3 weeks.

Other names: medi® Shoulder action brace

Conventional fabric arm sling

Device

Static immobilization using a conventional fabric arm sling applied immediately post-surgery and worn continuously for 3 weeks.

Primary outcomes

  1. Feasibility composite (Recruitment, Retention, and Adherence)

    Time frame: Up to 12 months post-surgery.

    Evaluation of the feasibility of conducting a definitive randomized controlled trial by measuring the recruitment rate (percentage of eligible enrolled), retention/follow-up completion rates, and protocol adherence (self-reported and therapist-verified). Safety and device-related adverse events will also be recorded.

Secondary outcomes

  1. Western Ontario Shoulder Instability Index (WOSI)

    Time frame: Baseline, 3 weeks, 6 weeks, 3 months, 6 months, and 12 months.

    Patient-reported functional outcome assessing quality of life related to shoulder instability.

  2. Rowe Score

    Time frame: Baseline, 3 weeks, 6 weeks, 3 months, 6 months, and 12 months.

    Clinical assessment of shoulder stability, mobility, and function.

  3. Constant-Murley Score

    Time frame: Baseline, 3 weeks, 6 weeks, 3 months, 6 months, and 12 months.

    Clinical assessment of general shoulder function, including pain, activities of daily living, range of motion, and strength.

  4. Subjective Shoulder Value (SSV)

    Time frame: Baseline, 3 weeks, 6 weeks, 3 months, 6 months, and 12 months.

    Patient-reported subjective function of the shoulder expressed as a percentage of a normal shoulder.

  5. Range of Motion (ROM)

    Time frame: Baseline, 3 weeks, 6 weeks, 3 months, 6 months, and 12 months.

    Active and passive flexion, abduction, and rotation measured via standardized goniometry by two blinded assessors.

  6. Quick Disabilities of the Arm, Shoulder and Hand (QuickDASH) Score

    Time frame: Baseline, 3 weeks, 6 weeks, 3 months, 6 months, and 12 months.

    Patient-reported outcome measure assessing physical function, symptoms, and related quality of life of the upper extremity.

  7. MRI Evaluation of Structural Healing

    Time frame: Between 6 and 12 months post-surgery.

    Assessment of capsulolabral integrity and bone defect remodeling, scored as intact, partial, or re-tear by two blinded physicians.

Study contacts

Contact information is provided by the study sponsor or research team.

Abdul-ilah Hachem, MD

CONTACT

[email protected]

+34609406030

Hady Ezzeddine, MD

CONTACT

[email protected]

Sponsors and collaborators

Lead sponsor

Hospital Universitari de Bellvitge

Other

Registry information

Official study title

Sling vs. Dynamic Shoulder Stabilizer After Soft Tissue Shoulder Instability Surgery ("SLIDY"): A Pilot Randomized Controlled Trial Assessing Feasibility, Early Functional Recovery, and Structural Healing

Acronym: SLIDY

Important dates

Study start
2026
Primary completion
2027
Study completion
2028
First posted
Jun 12, 2026
Registry last updated
Jun 17, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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