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RecruitingNCT06774820BLAST 1Updated Sep 11, 2026

Biceps Lasso Loop and Self- Locking Tenodesis Alongside Repair of Rotator Cuff Tears: Randomised Controlled Trial Study Protocol (BLAST 1)

An interventional study of self-blocking tenodesis and arthroscopic tenodesis in Rotator Cuff Injury, sponsored by Clinique Générale dAnnecy. Recruiting at 1 site in France. Open to participants aged 40 Years and older. Per ClinicalTrials.gov, last updated 2026-09-11.

Sponsored by Clinique Générale dAnnecy · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Started Jan 2025; still recruiting 1 year 9 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
100
Allocation
Randomized
Ages
40 Years and older
Sex
All
01

Study summary

The aim of this study is to compare the clinical results and complications of self-locking biceps tenodesis and double 360 lasso loop biceps tenodesis for the treatment of long chief of biceps or superior labrum anterior-posterior (SLAP) tendon pathology during shoulder arthroscopy in patients undergoing arthroscopic rotator cuff repair. Currently, there is no consensus on the use of tenodesis versus tenotomy to treat pathology of the long head of the biceps during arthroscopic rotator cuff repair. Numerous studies have examined the clinical results of long biceps tenotomy versus long biceps tenodesis, and there is no evidence to date of superiority of either technique. At Clinique Générale, we use a new, innovative technique called autobloc tenodesis to treat pathologies of the long head of the biceps. There are no comparative studies between autobloc tenodesis of the biceps and biceps tenodesis. Given its potential advantages, self-locking biceps tenodesis could emerge as the new technique of choice for treating biceps longus tendon pathology, potentially reducing differences in outcomes such as Popeye deformity. The information provided by this study could potentially guide future clinical practice, helping surgeons to choose the most appropriate treatment for their patients suffering from long biceps tendon pathology.

02

Conditions studied

  • Rotator Cuff Injury

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Keywords

  • rotator cuff
  • biceps
  • long biceps tendon
03

In context

Rotator Cuff Injuries

631 studies on the registry are indexed under Rotator Cuff Injuries; 156 are open to participants now.

This study's planned enrollment of 100 is above the median of 60 across 456 interventional studies indexed under Rotator Cuff Injuries.

Browse Rotator Cuff Injuries studies →

Lead sponsor

Clinique Générale dAnnecy is the lead sponsor of 8 studies on the registry; 7 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
40 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

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

  • Rotator cuff tear: confirmed preoperative diagnosis of a non- traumatic, full- thickness tear of the supraspinatus and/or infraspinatus and/or subscapularis tendon, as evidenced by ultrasound, arthro- CT or MRI.
  • Language proficiency: sufficient to allow for communication during the process and for the completion of the study questionnaires.

Exclusion criteria

Exclusion Criteria:

  • Tear type: partial thickness rotator cuff tears are excluded.
  • Tear severity: individuals with massive or irreparable rotator cuff tears are excluded.
  • Fatty degeneration: presence of rotator cuff muscle fatty degeneration classified as Grade 4 according to the Goutallier system will result in exclusion.
  • Glenohumeral osteoarthritis: patients exhibiting glenohumeral osteoarthritis, defined radiographically by the presence of joint space narrowing or osteophytes on anteroposterior (radiographs of the affected shoulder) will be excluded.
  • Prior shoulder surgery: history of previous surgical intervention on the affected shoulder will result in exclusion.
  • Popeye sign: preoperative presence of the Popeye sign will result in exclusion.
  • Cognitive impairment: pre- existing dementia or any condition that impairs the ability to understand study procedures and complete questionnaires and assessments is an exclusion criterion.
  • Pregnant, parturient or breast-feeding patients.
  • Persons under legal protection (curatorship, guardianship, safeguard of justice).
  • Persons deprived of their liberty by judicial or administrative measure
  • Persons under psychiatric care
  • Persons not affiliated to a social security scheme
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
100 participants (estimated)

Study arms

  • Experimental
    self-blocking tenodesis

    Procedure: self-blocking tenodesis

  • Active comparator
    arthroscopic tenodesis

    Procedure: arthroscopic tenodesis

Interventions

  • Procedureself-blocking tenodesis

    the LHB tendon is detached from its origin in the superior labrum. This technique supports the self-locking mechanism of the LHB tendon in the bicipital groove by detaching the tendon from the Y-shaped superior glenoid, including the superior labrum. A radiographically visible suture will be attached to the proximal part of the LHB tendon to facilitate later localization of the LHB tendon during imaging (3-0 stainless steel, ethicon).

  • Procedurearthroscopic tenodesis

    LHB tendon is detached from its origin, and sutured. Next, the LHB tendon is fixed in the bicipital groove using a 360-lasso loop tenodesis technique. A radiographically visible suture will be attached to the proximal part of the LHB tendon to facilitate subsequent localization of the LHB tendon during imaging (3-0 stainless steel, ethicon).

06

What researchers measure

Primary outcomes

  1. Constant score (CMS)

    The CMS is a 100-point scale comprising four components, including a patient-reported section (pain 15 points and activity level 20 points), for a total of 35 points. Alongside this, there is a doctor-reported section (shoulder strength 25 points, range of motion 40 points) for a total of 65 points.

    Time frame: 1 year after surgery

Secondary outcomes

  1. American Shoulder and Elbow Surgeons Score

    The ASES is a 100-point scale comprising 2 assessment dimensions: pain and activities of daily living.

    Time frame: 6 weeks, 3 months, 6 months, 1 year after surgery

  2. Subjective Shoulder Value (SSV)

    The SSV is a single-question assessment of the patient's perceived shoulder function expressed as a percentage of normal.

    Time frame: 6 weeks, 3 months, 6 months, 1 year after surgery

  3. LHB score

    The LHB score assesses symptoms and function related to long head of the biceps tendon pathology.

    Time frame: 6 months, 1 year after surgery

  4. Cosmetic appearance

    Cosmetic appearance will be assessed by both the patient and the clinician using standardized photographs.

    Time frame: 6 weeks, 3 months, 6 months, 1 year after surgery

  5. VAS pain score

    Pain intensity will be assessed using a visual analogue scale (VAS) at rest, during activity, and over the bicipital groove.

    Time frame: 6 weeks, 3 months, 6 months, 1 year after surgery

  6. Radiograph

    Standardized radiographs will assess postoperative migration of the long head of the biceps tendon using a radio-opaque marker.

    Time frame: Direct post-op, 6 weeks, 3 months, 6 months after surgery

  7. MRI or Ultra-sound

    MRI or ultrasound will assess the postoperative position of the long head of the biceps tendon at final follow-up.

    Time frame: 1 year after surgery

07

Study locations

1 of 1 sites recruiting
08

References and documents

Publications

  • Shirinskiy IJ, Boulidam D, Macken AA, van den Bekerom MPJ, Lafosse T, Buijze GA. Biceps lasso loop and self-locking tenodesis alongside repair of rotator cuff tears: randomised controlled trial study protocol (BLAST 1). BMJ Open. 2025 Nov 19;15(11):e106475. doi: 10.1136/bmjopen-2025-106475. PubMed 41263857 ↗

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jan 2025 (actual). Primary completion is estimated for Nov 2027, 33 months after the start.

Of 228 non-industry interventional studies with no phase under Rotator Cuff Injuries, half reached primary completion within 19 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 39. This study's planned 33 months is above that.

Counting every sponsor, half of 252 studies reached it within 23 months; a quarter within 11 and three quarters within 44.

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

Registered
Jan 9, 2025
First posted
Jan 14, 2025
StartActual
Jan 22, 2025
Primary completionEst.
Nov 15, 2027
CompletionEst.
Jan 15, 2028
Last update
Sep 11, 2026
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 Sep 11, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06774820
Lead sponsor
Clinique Générale dAnnecy
Responsible party
Sponsor
First posted
Jan 14, 2025
Start date
Jan 22, 2025
Primary completion
Nov 15, 2027 (estimated)
Completion
Jan 15, 2028 (estimated)
Last update
Sep 11, 2026

Study contacts

Geert Alexander Buijze, MD
Contact
gabuijze@hotmail.com
+33 6 69 96 27 33

Oversight

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

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