hallux limitus/rigidus

[박정웅]

HL may be structural and functional

- structural : limitation at the 1st MTPJ at all times

- functional : dorsiflexion at the 1st MTPJ is only reduced during weight bearing

Aetiology

1. intrinsic factors

- foot shape : rectus foot is more prone to develop hallux limitus

- biomechanical factors

` ankle equinus

` flexible or rigid pes planovalgus

` rigid or flexible forefoot varus

` dorsiflexion of the 1st ray

` elevated or hypermobile 1st ray

` flexor plate immobility

` plantar soft tissue contracture

` functional hallux limitus

- limb and foot anomalies

` external tibial trosion

` tibial varum

` positional variants of the knee

` femoral retroversion

` leg-length discrepancy

` abducted angle of gait or wide based gait

` a relativelty long first toe or long 1st metatarsal

` trauma, damage to the articular caritlage at the 1st MTPJ

` soft tissue tears and sprains

2. extrinsin factors

-inflammatory joint disease within the foot

-occupations requiring repeated and constant forced dorsiflexion of the hallus

-short shoes