Article

Functional hallux limitus (FHL) has been implicated in the
development of metatarsophalangeal joint osteoarthritis.
OBJECTIVES: To determine
whether cut-out orthosis treatment increases plantarflexion of the first
metatarsal by increasing its declination angle. STUDY DESIGN: Cross-sectional
study. METHODS: A total of 46 female volunteers with an average age of 25.66 +/-
5.70 years (range: 19-42 years) and FHL participated in the study. We assessed
the degrees of movement of the first metatarsal and proximal phalanx bones at the
first metatarsophalangeal joint without and while wearing the cut-out orthosis
using the 3Space Fastrak(R) via sensors. RESULTS:
The movement of the
plantarflexion declination angle of the first metatarsal bone was higher using
the orthosis 29.84 degrees +/- 5.98 degrees versus without orthosis 27.69 degrees
+/- 5.91 degrees (p < 0.031 degrees ). Use of sandals may have minimized the
magnitude of movement changes associated with orthosis versus non-orthosis use.
CONCLUSION: The cut-out orthosis demonstrated a beneficial effect on non-fixed
first metatarsophalangeal and metatarsal cuneiform joints affected by FHL,
significantly increasing the declination of the metatarsal angle. Furthermore,
use of the cut-out orthosis significantly reduced adduction movement of the first
metatarsal bone in the transverse plane.
CLINICAL RELEVANCE:
The cut-out orthosis
demonstrated a beneficial effect on non-fixed first metatarsophalangeal and
metatarsal cuneiform joints affected by FHL, significantly increasing the
declination of the metatarsal angle. Furthermore, use of the cut-out orthosis
significantly reduced adduction movement of the first metatarsal bone in the
transverse plane.
CI - (c) The International Society for Prosthetics and Orthotics 2014.

Langue : ANGLAIS