Functional hallux limitus is a condtion of the first MPJ that is not without its controversy. Many think it’s the root of all evil and casues a lot of problems, yet many others think that it does not exist. Functional hallux limitus can be defined as a restriction in the range of dorsiflexion at the first MPJ during functioning, i.e. walking or running. During a non-weight bearing assessment functional hallux limitus does have a normal and adequate range of motion, but for some reason during weight bearing, the first metatarsophalangeal joint does not want to dorsiflex as it should. There is much debate as to if functional hallux limitus just secondary to rearfoot pronation and midfoot collapse or if functional hallux limitus is a primary problem and is the cause of the pronated foot and midfoot collapse. There is no good research evidence to guide which one of these approaches is probably the most appropriate. There have also been suggestions made that a functional hallux limitus is really just a dysfunction windlass mechanism mechanics. The treatment of functional hallux limitus (assuming it exists) is the use of things like the trademarked cluffy wedge and the patented kinetic wedge. Functional hallux limitus can also be helped by inverting the rearfoot with a typical foot orthotic.
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