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Table 2 Comparison results of the insertion of the extensor hallucis longus

From: A cadaveric study of the morphology of the extensor hallucis longus - a proposal for a new classification

Type Al-Saggaf (2003) Current study
Pattern I – single tendon, inserts on the dorsal aspect 39 (65%) 60 (57.5%)
Pattern II
 AT inserted into the dorsal aspect of the base of the proximal phalanx, just distal to the insertion of EHB. 9 (15%) 5 (4.8%)
 AT joined to the termination part of the EHB and inserting into the dorsal aspect of the base of the proximal phalanx of the big toe. 3 (5%) 0
 AT inserted into the dorsal aspect of the proximal phalanx of the big toe, medial to the insertion of the EHB. 2 (3.33%) 31 (29.9%)
 AT joining the middle of EHB and forming a common tendon, and inserting into the dorsal aspect of the base of the proximal phalanx of the big toe. 2 (3.33%) 0
 AT inserting into the dorsal aspect of the base of the first metatarsal. 0 6 (5.7%)
Pattern III
 Two ATs arising from the medial side of the main tendon and inserting into the capsule of the joint 3 (5%) 0
 Two ATs arising from the medial and lateral sides of the main tendon and inserting into the capsule of the first metatarso-phalangeal joint 2 (3.33%) 0
 Medial AT also inserts to the distal phalanx but more proximally, and lateral AT (the stronger of the two auxiliary bands) fuses with the extensor halucis brevis and attaches to the proximal phalanx 0 2 (1.9%)
  1. Both Pattern II and Pattern III have an identical main tendon insertion as Pattern I. AT accessory tendon; EHB extensor hallucis brevis