Rodrigues Rogéria Nobre, Lopes Alexia Abuhid, Torres Jardélio Mendes, Mundim Marina Franco, Silva Lênio Lúcio Gavio, Silva Breno Rabelo de Carvalho E
MDs, Musculoskeletal Radiologists, Axial Medicina Diagnóstica, Belo Horizonte, MG, Brazil.
MD, Orthopedist, Head of the Foot Surgery Group at Santa Casa de Belo Horizonte, Professor at Faculdade de Ciências Médicas de Minas Gerais (FCMMG), Belo Horizonte, MG, Brazil.
Radiol Bras. 2015 Nov-Dec;48(6):368-72. doi: 10.1590/0100-3984.2013.0028.
To assess the prevalence of isolated findings of abnormalities leading to entrapment of the lateral plantar nerve and respective branches in patients complaining of chronic heel pain, whose magnetic resonance imaging exams have showed complete selective fatty atrophy of the abductor digiti quinti muscle.
Retrospective, analytical, and cross-sectional study. The authors selected magnetic resonance imaging of hindfoot of 90 patients with grade IV abductor digiti quinti muscle atrophy according to Goutallier and Bernageau classification. Patients presenting with minor degrees of fatty muscle degeneration (below grade IV) and those who had been operated on for nerve decompression were excluded.
A female prevalence (78.8%) was observed, and a strong correlation was found between fatty muscle atrophy and plantar fasciitis in 21.2%, and ankle varices, in 16.8% of the patients.
Fatty atrophy of the abductor digiti quinti muscle is strongly associated with neuropathic alterations of the first branch of the lateral plantar nerve. The present study showed a significant association between plantar fasciitis and ankle varices with grade IV atrophy of the abductor digiti quinti muscle.
评估在主诉慢性足跟痛且磁共振成像检查显示外展小趾肌完全性选择性脂肪萎缩的患者中，导致足底外侧神经及其分支卡压的孤立性异常表现的患病率。
回顾性、分析性横断面研究。作者根据古塔利耶和贝纳热分类法，选择了90例IV级外展小趾肌萎缩患者的后足磁共振成像。排除存在轻度肌肉脂肪变性（IV级以下）的患者以及接受过神经减压手术的患者。
观察到女性患病率为78.8%，21.2%的患者中肌肉脂肪萎缩与足底筋膜炎之间存在强相关性，16.8%的患者中存在与踝关节静脉曲张的强相关性。
外展小趾肌脂肪萎缩与足底外侧神经第一分支的神经病变改变密切相关。本研究显示足底筋膜炎和踝关节静脉曲张与IV级外展小趾肌萎缩之间存在显著相关性。
