Obusforme Orthopaedic Chair   [Back to : Seating] To view details, please select a product. HB Obusforme Orthopaedic Chair The High Back Obusforme of chair featuring the unique shaped polycarbonate frame to reduce back strain, is available in fixed and adjust arm options, and is supplied with adjustable neck cushion. MB Obusforme Orthopaedic Chair The Medium Back Obusforme of chair featuring the unique shaped polycarbonate frame to reduce back strain, is available in fixed and adjust arm options. Chair is supplied with Synchronised Mechanism.