[Translated article] Relationship between low lying peroneus brevis muscle belly and peroneal tendons dislocation

Area of Science:

• Orthopedic Surgery
• Radiology
• Anatomy

Background:

• Peroneal tendon pathologies cause lateral ankle pain.
• A low-lying peroneus brevis muscle belly may increase retromalleolar space, potentially causing tendon issues.
• This study investigates the link between this anatomical variation and peroneal tendon dislocation.

Purpose of the Study:

• To characterize individuals with a low-lying peroneus brevis muscle belly.
• To determine the association between magnetic resonance imaging (MRI) findings of a low-lying peroneus brevis muscle belly and clinical peroneal tendon dislocation.

Main Methods:

• A case-control study design was employed.
• 103 patients were included: cases with low-lying peroneus brevis muscle belly and peroneal dislocation, and controls with normal peroneus brevis muscle implantation and peroneal tendon dislocation.

Main Results:

• The prevalence of clinical peroneal dislocation was 7.64% in patients with low-lying peroneus brevis muscle belly.
• The prevalence of clinical peroneal dislocation was 8.88% in patients with normal peroneus brevis muscle belly.
• The odds ratio (OR) was 0.85 (95% CI 0.09-7.44, p=0.88), indicating no significant association.

Conclusions:

• There is no statistically significant relationship found between a low-lying peroneus brevis muscle belly and clinical peroneal tendon dislocation.
• These findings suggest that this anatomical variation may not be a primary cause of peroneal tendon dislocation.