Abstract
Casted and plate orthoses were compared for their effectiveness in controlling excessive pronation and providing associated symptom relief. Two subject groups ( n=30) matched for sex, age, sport involvement and injury type were prescribed either a casted or plate orthosis and were evaluated over a 3 month period. Pronation during treadmill running trials, with and without orthotic intervention, was determined by using two-dimentional video analysis. Symptom improvement was evaluated via questionnaire analysis. Two way analysis of variance demonstrated that both types of orthosis effectively reduced total pronation, maximum velocity of pronation, total calcaneal eversion and maximum velocity of calcaneal eversion ( P<0.05), with no significant difference between orthotic types. Questionnaire analysis indicated that symptoms improved (to some extent) in 92% of all subjects after one month, with little difference between orthotic type. Considering the cost difference of the two types of orthotics (casted costing 2.5 times more), plate orthoses provide satisfactory treatment.
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