Resting orthosis for a joint

An orthosis for supporting a joint, adapted to a thumb and/or a wrist, the orthosis comprising:

• a sleeve of an elastic material, and adapted to envelop the joint and distal and proximal limb portions of a limb on either side of the joint, the sleeve having an opening for passage of the proximal limb portion and an opening for passage of the distal limb portion,
• an elastically deformable panel housed in a pocket of the sleeve and adjusted to dimensions of the elastically deformable panel, the elastically deformable panel comprising a proximal portion adapted to be held around the proximal limb portion, and a distal portion adapted to be held around the limb only by the sleeve,
• wherein the elastically deformable panel is configured so that, in use over a region of at least 50% of a length of the sleeve along the distal and proximal limb portions, the elastically deformable panel has a cross-section adapted to occupy more than 30% of a perimeter of the limb,
• and comprising a non-elastic tightening device for bracing the sleeve in said region of at least 50% of the length of the sleeve and bracing the proximal portion of the elastically deformable panel around the proximal limb portion, while said distal portion of the elastically deformable panel is held around the limb only by the sleeve,
• the elastically deformable panel being made of a material having a Young's modulus between 5 and 10 MPa, while the elastic material forming the sleeve has a rigidity of a lower order of magnitude,
• and wherein the orthosis is configured so that, when the non-elastic tightening device is tightened around the proximal limb portion, the resulting bracing of the proximal portion of the elastically deformable panel by the non-elastic tightening device while said distal portion of the elastically deformable panel is held around the limb only by the sleeve and is not held around the limb by the non-elastic tightening device, causes the elastically deformable panel to behave like a cantilever beam preventing involuntary movements of the limb from a neutral resting position, without preventing voluntary movements of the limb based on the elastic deformation of the elastically deformable panel which is enabled by the Young's modulus of between 5 and 10 MPa of the material of which it is made.