Fig. (1) Various stages of arthroscopic implantation of the spacer device: Fig. (1a) Insertion of the plant in a folder form into the subacromaial space. Fig. (1b) Start of spreading and inflation with saline solution. Fig. (1c) Partially inflated spacer positioned over the humeral head. Fig. (1d). Fully inflated spacer in its final position over the humeral head.