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. 2023 Apr 17;12(5):e687–e695. doi: 10.1016/j.eats.2023.01.007

Table 1.

Step-by-Step Details of the Technique

Step 1. Position and examination under anesthesia
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    Sedation and regional anesthesia.

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    Patient in supine position with 2 supports (lateral and distal).

Step 2. Surgical approach
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    10-cm midline skin incision.

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    Transquadricipital tendon approach.

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    Supratrochlear synovial membrane incision.

Step 3. Trochlear preparation
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    The native groove, the medial and lateral facets lines are marked.

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    The new planned groove line is marked.

Step 4. Prominence removal
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    A strip of cortex is removed around the femorotrochlear osteochondral junction.

Step 5. Trochlear undersurface preparation
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    Multiple convergent tunnels through the trochlear undersurface cancellous bone are performed.

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    Bone bridges between the tunnels are removed.

Step 6. Trochlear surface osteotomies
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    Cartilage incision with surgical scalpel blade No. 23 along the marked lines.

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    Osteochondral cuts with a thin osteotome.

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    Facets are rotated slightly to increase the sulcus angle.

Step 7. Fixation
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    Fixation with 3 BioComposite Labral SwiveLock Anchors 3.5 mm.

Step 8. Closure
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    Fulfill the gaps between the facets with bone.

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    Supratrochlear synovium is closed.