August 1, 2025World NeurosurgeryOpen Access

Transhorizontal fissure approaches to the middle cerebellar peduncle: quantitative anatomical analyses of the retrosigmoid, extended retrosigmoid, and presigmoid-retrolabyrinthine approaches

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No significant difference in middle cerebellar peduncle exposure was found among the three approaches.
Both presigmoid-retrolabyrinthine and extended retrosigmoid approaches provided greater surgical freedom than the retrosigmoid approach.
Quantitative comparison showed the presigmoid-retrolabyrinthine approach had an advantage in anteroposterior angles of attack.
Findings suggest the presigmoid-retrolabyrinthine and extended retrosigmoid approaches are preferable for accessing lateral pontine cavernous malformations.

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Implication

Quantitative assessment of retrosigmoid, extended retrosigmoid, and presigmoid-retrolabyrinthine approaches indicates enhanced access to middle cerebellar peduncle.

Cite This Study

Abramov et al. (2025) studied this question.

synapsesocial.com/papers/68af2d7ccf1dd9ea359e588f https://doi.org/10.1016/j.wneu.2025.124379

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Implication

Quantitative assessment of retrosigmoid, extended retrosigmoid, and presigmoid-retrolabyrinthine approaches indicates enhanced access to middle cerebellar peduncle.

Transhorizontal fissure approaches to the middle cerebellar peduncle: quantitative anatomical analyses of the retrosigmoid, extended retrosigmoid, and presigmoid-retrolabyrinthine approaches

Key Points

Discussion

Implication

Cite This Study

Transhorizontal fissure approaches to the middle cerebellar peduncle: quantitative anatomical analyses of the retrosigmoid, extended retrosigmoid, and presigmoid-retrolabyrinthine approaches

Key Points

Discussion

Implication

Cite This Study