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

Table 2.

Pearls and Pitfalls

Pearls
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    The supratrochlear synovial membrane should be incised and reflected to determine the amount of bone to be removed.

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    Drawing the planned trochlear lines with a sterile marking pen to evaluate before performing the osteotomies the planned trochlear groove.

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    The use of the offset guide enables to create an osteochondral flap of 5 mm, limiting the risk of cartilage damage.

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    Additional subchondral bone should be removed from the metaphyseal part with the burr to decrease the prominence and mold the trochlear flaps.

Pitfalls
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    Breakage of the osteochondral flap while performing the three osteotomies.

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    Overtensioning of the sutures might lead to suture cut-through on the cartilage and anchor pull-out and cartilage.

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    The osteotomy and slight twist of the osteochondral flap around the distal hinge might create a step, which needs to be removed with the surgical blade.