Foot & Ankle

Lateral Aspect

  • Accessory Peroneal Muscles

Medial Aspect

  • Flexor Digitorum Accessorius Longus
  • Peroneocalcaneus Internus
  • Accessory Soleus
  • Tibiocalcaneus Internus


  • Accessory Slips of the Medial and Lateral Gastrocnemius
  • Tensor Fasciae Suralis
  • Accessory Popliteus


  • Accessory Brachialis
  • Anconeus Epitrochlearis
  • Accessory Head of the Flexor Pollicis Longus
  • Bifurcated Distal Biceps Brachii

Hand and Wrist

Volar Aspect

  • Accessory Flexor Digitorum Superficialis Indicis
  • Accessory Abductor Digiti Minimi
  • Accessory Flexor Digiti Minimi
  • Variations in Palmaris Longus
  • Flexor Carpi Radialis Brevis Vel Profundus

Dorsal Aspect

  • Extensor Digitorum Brevis Manus
  • Accessory Extensor Carpi Radialis and Variations


  • Additional Heads of Biceps Brachii


1. Sookur PA, Naraghi AM, Bleakney RR, Jalan R, Otto Chan O, White LM. Accessory muscles: anatomy, symptoms, and radiologic evaluation. [[ |March 2008 RadioGraphics, 28, 481-499]].