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| inferior_oblique_nasal_tranposition [2026/07/13 17:34] – [Expected Effect] Scott Larson | inferior_oblique_nasal_tranposition [2026/07/13 17:52] (current) – Scott Larson |
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| ====Surgical Technique==== | ====Surgical Technique==== |
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| The IO muscle is disinserted and reattached at a new position typically **2 mm nasal and 2 mm posterior to the nasal border of the IR muscle insertion**. [[https://pubmed.ncbi.nlm.nih.gov/12825055/|Stager et al., 2003]] This placement is critical — by moving the IO's effective insertion nasal to the IR, the muscle's vector of action is fundamentally altered. The procedure differs from standard anterior transposition (ATIO), which places the IO at or near the temporal border of the IR insertion. Stager et al. recommended the use of **Mersilene (permanent) sutures** rather than absorbable suture materials to prevent postoperative retraction of muscle fibers. [[https://pubmed.ncbi.nlm.nih.gov/12825055/|Stager et al., 2003]] | The IO muscle is disinserted and reattached at a new position typically **2 mm nasal and 2 mm posterior to the nasal border of the IR muscle insertion**. [[https://pubmed.ncbi.nlm.nih.gov/12825055/|Stager et al., 2003]] This placement is critical — by moving the IO's effective insertion nasal to the IR, the muscle's vector of action is fundamentally altered. The procedure differs from standard anterior transposition (ATIO), which places the IO at or near the temporal border of the IR insertion. Stager et al. recommended the use of **Mersilene (permanent) sutures** rather than absorbable suture materials to prevent postoperative retraction of muscle fibers. |
| | {{::nasal_transposition_io.png?direct|}}\\ |
| | [[https://pubmed.ncbi.nlm.nih.gov/12825055/|Stager et al., 2003]] |
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| ====Indications==== | ====Indications==== |