EMET Education
Musculoskeletal
Shoulder
Shoulder instability

3D model · Shoulder

Shoulder Instability 3D Model | EMET Education

Reproduce your patient's dislocation and lesions during the visit, and show in 3D the stabilization you recommend. They leave with their model on their phone.

Customize the lesions

Opens in your browser, no sign-up. For orthopedic surgeons, sports medicine physicians, physiatrists, emergency physicians, rheumatologists, radiologists and primary care physicians.

The patient understandsTheir lesions, reproduced from their imaging, on a model they handle themselves.
Reassured, ready to decideThey review the proposed procedure at home before giving consent.
Documented informationVisit saved and dated: a record of the information you provided.
In their language🇫🇷 🇬🇧 🇪🇸 🇷🇺

How it works

In the visit, in three steps

Structured information in a few minutes, which the patient can review at home.

1
Show

Open the model and walk through the anatomy: glenoid and labrum, humeral head, coracoid and conjoint tendon, then the anterior dislocation, arm in abduction and external rotation.
2
Reproduce

Set the lesions from the CT scan or MR arthrogram: Bankart lesion, glenoid bone loss to the percent, Hill-Sachs lesion. Then walk through the proposed stabilization, step by step.
3
Share

Give the patient the QR code or an image: they find their own case, in their language.

Features

Explain in detail during the visit

Every setting updates the model live: you reproduce the lesions from your patient's imaging in front of them, then walk through the treatment you recommend.

The dislocation and its lesions, in a few clicks

The “Anterior dislocation” button shows the injury, the “Pathology & lesions” panel what it leaves behind, on the glenoid and on the humeral head. Lesions add up, and each one changes the model in front of the patient.

Anterior dislocation, in motion

The arm moves into abduction and external rotation, then the humeral head slides over the anteroinferior rim and stops there, the Hill-Sachs lesion engaged on the rim. “Generate post-dislocation lesions” plays the dislocation and the lesions it leaves.

Model panel: “Movements” section, “Anterior dislocation” button. — **Shoulder** · reduced

Reduced shoulder, anterior view: the humeral head centered in the glenoid. — **Shoulder** · reduced

The treatment, step by step

Three procedures, played step by step, continuously or one step at a time: labral repair, Latarjet procedure, Hill-Sachs remplissage. Once the procedure is done, a new dislocation no longer goes through: the head is stopped by the repaired labrum or by the graft.

Labral repair

Three buried anchors in the anteroinferior rim, sutures passed around the labrum, knots tied: the labrum is retensioned against the glenoid.

Labral repair, step 2: the sutures passed around the detached labrum. — 2Passing the sutures

Labral repair, step 3: knots tied, the labrum pressed back against the glenoid rim. — 3Knots tied

Labral repair, step 4: the humeral head back in place, shoulder stabilized. — 4Shoulder stabilized

Latarjet procedure

Decortication and osteotomy of the coracoid, conjoint tendon preserved, graft transferred onto the bone loss, fixation, sling effect.

Latarjet procedure, step 2: coracoid osteotomy, the conjoint tendon attached to the graft. — 2Coracoid osteotomy

Latarjet procedure, step 3: the graft transferred to the anteroinferior glenoid, decorticated surface on the bone loss. — 3Graft transfer

Latarjet procedure, step 4: the graft fixed with two screws, glenoid translucent to follow their path. — 4Fixation

Latarjet procedure, step 5: the bone block in place, the anteroinferior glenoid rim restored. — 5Bone block in place

Latarjet procedure, step 6: humeral head in place, the conjoint tendon passing anteriorly and inferiorly forms a sling. — 6Sling effect

Hill-Sachs remplissage

Infraspinatus tenodesis into the Hill-Sachs lesion: anchor at the bottom of the defect, sutures passed through the tendon, knot tied.

Remplissage, step 1: the translucent infraspinatus over the Hill-Sachs lesion. — 1The infraspinatus

Remplissage, step 2: an anchor inserted at the bottom of the defect through the tendon. — 2Anchor in the lesion

Remplissage, step 3: the sutures passed through the infraspinatus tendon. — 3Passing the sutures

Remplissage, step 4: top view, knot tied, the tendon pressed into the defect, filling it. — 4Knot tied

Graft fixation, your choice

Double EndoButton, one screw or two screws: only the hardware placed at the “Fixation” step changes. The glenoid turns translucent during fixation, to follow the path of the screws or of the posterior button.

Model panel: graft fixation, two screws. — **Double EndoButton**

Latarjet bone block fixed with a double EndoButton: the anterior button on the graft, the transosseous link to the posterior button. — **Double EndoButton**

After the visit

The patient leaves with their 3D model

They scan the QR code: the model, their findings and the proposed treatment follow them on their phone, in their language.

The model, exactly as you set it

At the end of the visit, the Consultation panel shows the anatomical findings, the proposed treatment and a QR code. The patient scans it and finds the model on their phone exactly as you set it, in their language.

Their lesions, and the proposed treatment to replay step by step.
Their anatomical findings and the explanatory card.
No identifying data in the link.

Patient view on a phone: the shoulder after a Latarjet procedure fixed with two screws, and the “The proposed treatment” panel open, with the “Replay” button. — What the patient sees after scanning the QR code

Every structure explains itself on tap

Tap the glenoid, the labrum, the Hill-Sachs lesion, the graft or a screw: its name and an explanation appear.

One explanation per structure: bones, labrum, lesions, graft, anchors, screws, sutures.
Written for the patient, in their language.
They can reread it on their own, on the tablet or at home.

Explanation bubble “Hill-Sachs lesion” shown after tapping the defect at the back of the humeral head. — “What is this?” on tap

They can replay the treatment step by step

From “The proposed treatment,” the patient replays the procedure: each step plays at their own pace, with its explanation, as often as they like.

Patient view on a phone: the Latarjet procedure replayed step by step. — “Replay”: the procedure, step by step

Try it with your next case: the model opens in your browser, nothing to install.

Customize the lesions

Patient information

Quality information, documented

Only 12% of U.S. adults have proficient health literacy (National Assessment of Adult Literacy). A patient who sees their own lesions and the proposed procedure understands them, gives truly informed consent, and approaches treatment with confidence.

For the patient

They see their own lesions, reproduced from their imaging, and how the proposed treatment unfolds. They leave with the same material and can review it at home, with their family, as often as they like, before giving consent.

For the physician

Each visit created with an account keeps a record of the information provided: what was shown, when, and whether the patient reviewed it. The model image, with the anatomical findings, the proposed treatment and the QR code, downloads for the patient's chart and prints. Informed consent, as the Joint Commission puts it, is more than getting a signature.

Saved and datedThe exact state of the model: injuries shown, treatment proposed.
Identical, archivableThe patient receives what you showed; the image goes in the chart and prints.
TrackedEach time the patient opens the link is recorded.
AnonymousThe link given to the patient carries no identifying data.

“Document the informed consent conversation and the patient’s (or surrogate’s) decision in the medical record in some manner.”

AMA Code of Medical Ethics, Opinion 2.1.1, Informed Consent

The model supports the consent conversation and the written consent form; it does not replace them. Data and privacy: legal information (in French).

Questions

Questions from colleagues

Is the model free?

Partly: the model and most of the lesions are free. Treatments (labral repair, Latarjet procedure, remplissage) and other features are paid options.

Do I need an account?

Not to open the model, set the lesions and walk through the treatment. After about fifteen adjustments, you will be asked to create a free account: it saves your visits, picks them up from one time to the next, and records when the patient opens the link.

What equipment do I need?

Just a web browser, nothing to install: computer, tablet or TV screen in the exam room; the patient opens it on their phone. One click saves an image, without the interface, for the chart.

What happens to patient data?

No patient names are stored. The link given to the patient carries only the state of the model: lesions, treatment, language and visit date. A name written on the image you hand out stays on that image.

Is it a medical device?

No: it is an educational tool. It does not diagnose, does not plan surgery, and does not replace the consent conversation or the written consent form. Among software functions that are not medical devices, the FDA lists those intended for general patient education and interactive anatomy diagrams used for training.

How long does it take in clinic?

Three adjustments and one procedure played: a few minutes, during the visit. The patient reviews it at home, as often as they like.

Can the dislocation be shown?

Yes: the arm moves into abduction and external rotation, then the humeral head slides over the anteroinferior rim and stops there, the Hill-Sachs lesion engaged on the rim. After a stabilization, the same dislocation no longer goes through: the head is stopped by the repaired labrum or by the graft.

Which fixation for the bone block?

Double EndoButton, one screw or two screws, chosen in the panel: only the hardware changes, the steps stay the same. After a fixed bone block, a labral repair can complete it: the labrum is reattached behind the graft, which becomes extra-articular.

Can I embed it on my website?

It is planned for upcoming plans: the model displayed on a practice or hospital website, credited to EMET Education.

Which languages?

English, Spanish, French and Russian. The patient receives the model in the language chosen during the visit, which helps with the roughly 28 million people in the U.S. with limited English proficiency, alongside a qualified interpreter, not instead of one.

Design

Who designed this model

Model designed by Dr. Mikaël Chelli, orthopedic surgeon, based on the reference descriptions. Updated October 1, 2026.

Bankart A.S.B. The pathology and treatment of recurrent dislocation of the shoulder-joint. Br J Surg, 1938.
Hill H.A., Sachs M.D. The grooved defect of the humeral head. Radiology, 1940.
Latarjet M. À propos du traitement des luxations récidivantes de l'épaule. Lyon Chir, 1954.
Burkhart S.S., De Beer J.F. Traumatic glenohumeral bone defects and their relationship to failure of arthroscopic Bankart repairs. Arthroscopy, 2000.
Purchase R.J. et al. Hill-Sachs “remplissage”: an arthroscopic solution for the engaging Hill-Sachs lesion. Arthroscopy, 2008.
Boileau P. et al. A guided surgical approach and novel fixation method for arthroscopic Latarjet. J Shoulder Elbow Surg, 2016.

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