Acta cirurgica brasileira · 2026
Anatomical study of peroneal longus and brevis innervation and its spatial relationship with trigger points.
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Delantonia Nazareth Cristina, Park Lucas Yongsoo, Hojaij Flávio, Andrade Mauro, Jacomo Alfredo Luiz, Jacomo Flavia Emi Akamatsu
Аннотация
PURPOSE: Myofascial pain syndrome (MPS) is a common cause of chronic musculoskeletal pain. Long fibular syndrome is a symptom of lower-limb MPS. Research has associated MPS with motor end plates in the innervation zone. This study aimed to identify the anatomical entry points of the superficial peroneal nerve (SPN) in the peroneal longus (PL) and peroneal brevis (PB) muscles through dissection.
METHODS: The PL and PB muscles of 12 cadavers were dissected to identify the nerve entry points, which were mapped and organized into quadrants. Poisson marginal distribution, identity linkage function, and Bonferroni multiple comparisons were used for statistical analysis. Statistical analysis included summary measures, Student's and Mann-Whitney group comparisons, Pearson and Spearman correlations. Statistical significance was set at p < 0.05.
RESULTS: Quadrant I, followed by quadrant II (upper half of the PL and PB muscles), had the highest number of SPN entry points. Quadrants III and IV (lower half of the PL and PB muscles) had the lowest numbers of nerve entry points and did not differ statistically from each other.
CONCLUSION: The SPN entrance positions in the PL and PB muscles matched literature trigger points. The anatomical relationship between trigger points can aid healthcare providers in procedures affecting muscle innervation and in pinpointing pain locations through spatial localization.
METHODS: The PL and PB muscles of 12 cadavers were dissected to identify the nerve entry points, which were mapped and organized into quadrants. Poisson marginal distribution, identity linkage function, and Bonferroni multiple comparisons were used for statistical analysis. Statistical analysis included summary measures, Student's and Mann-Whitney group comparisons, Pearson and Spearman correlations. Statistical significance was set at p < 0.05.
RESULTS: Quadrant I, followed by quadrant II (upper half of the PL and PB muscles), had the highest number of SPN entry points. Quadrants III and IV (lower half of the PL and PB muscles) had the lowest numbers of nerve entry points and did not differ statistically from each other.
CONCLUSION: The SPN entrance positions in the PL and PB muscles matched literature trigger points. The anatomical relationship between trigger points can aid healthcare providers in procedures affecting muscle innervation and in pinpointing pain locations through spatial localization.