Lateral wedges - a crossover study
"A commonly studied conservative
treatment approach for knee OA
is shoe-worn insoles, in particular
insoles that are built up along the
lateral edge (lateral wedges)."
The randomization schedule was produced
before study commencement by a researcher
not involved with data collection or analysis.
Random permuted blocks of 4 or 6 were
developed and randomization codes were sealed
in consecutively numbered, opaque envelopes
that were opened after baseline testing for each
participant. To prevent cross-contamination
of insole wear, the unused pair (in the case
of active treatment periods), or both pairs (in
the case of the wash-out period) of insoles
were kept onsite at the University. Further,
the participants were unaware of the study
hypotheses as well as the justification for the
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Pedorthic Footcare Association | www.pedorthics.org
design of the insoles. Both pairs were provided
to participants upon study completion.
INTERVENTIONS
For both types of insoles, polypropylene sheets
of 34 mm thickness were vacuum formed or
milled directly to produce a sulcus length insole.
For both conditions, the lateral wedges consisted
of a 5-degree ethyl-vinyl acetone (EVA) (Shore
A hardness of 55) sulcus-length posting. For
the lateral wedges plus arch support insole, the
same lateral wedges were used in combination
with a custom arch support across the foot to
match the negative of the volumetric cast. Both
insoles (Fig. 1) were finished with the same
neoprene cover and modified as necessary to
maximize comfort and fit. Participants were
instructed to wear the insoles as much as
possible and no other instructions regarding the
intervention were provided.
from:https://www.braceability.com/products/medial-lateral-heel-wedges
(month 2). After a two-month washout period of
no insole wear, participants were re-assessed
again (month 4) and then underwent a second
two-month period of intervention with the
alternate insole condition, after which they were
re-assessed for the final time (month 6).