Participants were introduced in an Excel database in order of arrival and were randomized into 2 equal groups by an automatic program (Group A : Whale orthotic. Group B Colditz Orthotic). The same low temperature thermoplastic material was used for both orthoses (Orfit Colors NS 2.0 mm, micro perforated/ Orfit Industries, Wijnegem, Belgium). The orthoses were custom -fabricated for each patient by a hand therapy clinician experienced in orthopedic cases.