| Which of the following anatomic structures is most at risk while performing a direct medial approach for a Lapidus bunion correction? |
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- Posterior tibial tendon The posterior tibial tendon inserts broadly but primarily on the medial navicular. It is well proximal to the site in question
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- Dorsalis pedis (DP) artery The DP artery is lateral to the 1st tarsometatarsal joint
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- Flexor hallucis longus (FHL) The FHL is relatively plantar as compared to this medial approach
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- Anterior tibial tendon The anterior tibial tendon inserts dorsomedially on the medial cuneiform and the 1st metatarsal base (the bones involved in a a Lapidus procedure). It is at risk with a direct medial approach
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- Dorsal medial hallucal cutaneous nerve The dorsal hallucal cutaneous nerve is at risk, but the risk is greater to the anterior tibial tendon with a direct medial approach to the 1st tarsometatarsal joint