Acta cirurgica brasileira · 2026
Anatomical study of the innervation of the tibialis anterior muscle and its relationship with myofascial trigger points.
СтатьяНазвание и аннотация: Перевод в очереди
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Congio Jéssica Bevilaqua, Alencar César Rocha de, Hojaij Flávio Carneiro, Andrade Mauro Figueiredo Carvalho de, Jacomo Alfredo Luiz, Akamatsu Flávia Emi
Аннотация
PURPOSE: Myofascial trigger points (MTPs) in the tibialis anterior muscle (TAM) are located in the upper third of the muscle and can be activated by various pathologies such as sprains, fractures, and muscle overload. Although the pathophysiology of MTPs is unclear, they often coincide with motor plates in the innervation zone. This study aimed to describe the innervation of the deep fibular nerve (DFN) into the TAM and relate it to clinically described MTPs.
METHODS: The TAMs of 12 cadavers were dissected from their origins to observe the exact point at which the DFN penetrates the muscle belly. Entry points were mapped by dividing the muscle into four areas. Statistical analysis was performed using a Poisson marginal distribution and identity linkage function, followed by Bonferroni multiple comparisons. Statistical analysis included summary measures, group comparisons using Student and Mann-Whitney's tests, and Pearson and Spearman's correlations. Statistical significance was set at p < 0.05.
RESULTS: Quadrants I and II had significantly more DFN branches than quadrants III and IV (p < 0.001), whereas quadrants I versus II and areas III versus IV showed no significant differences (p < 0.05).
CONCLUSION: Consistent with the clinical literature, the branches of the DFN in the TAM correspond to the described areas of the MTPs. The anatomical relationships between MTPs may help explain the pathophysiology of various disorders and provide rational treatment options.
METHODS: The TAMs of 12 cadavers were dissected from their origins to observe the exact point at which the DFN penetrates the muscle belly. Entry points were mapped by dividing the muscle into four areas. Statistical analysis was performed using a Poisson marginal distribution and identity linkage function, followed by Bonferroni multiple comparisons. Statistical analysis included summary measures, group comparisons using Student and Mann-Whitney's tests, and Pearson and Spearman's correlations. Statistical significance was set at p < 0.05.
RESULTS: Quadrants I and II had significantly more DFN branches than quadrants III and IV (p < 0.001), whereas quadrants I versus II and areas III versus IV showed no significant differences (p < 0.05).
CONCLUSION: Consistent with the clinical literature, the branches of the DFN in the TAM correspond to the described areas of the MTPs. The anatomical relationships between MTPs may help explain the pathophysiology of various disorders and provide rational treatment options.