A medical apparatus for supporting the shoulder complex and humerus in a neutral position includes an upper body garment and a forearm sleeve adjustably fastened to the garment in an anterior and transverse orientation. The patient inserts her arm in the sleeve and fastens an elbow strap around the elbow to secure the forearm in a horizontal anterior position near waistline. The sleeve is adjustable in position to place the humerus inline with the spinal column, thereby preventing adduction and internal rotation of the glenohumeral joint. A weight distribution strap further elevates the sleeve and forearm. The strap is secured in a superior anterior region of the shoulder and spaced from the neck thereby preventing injury to the internal anatomies in the neck region. Optionally, thermal therapy to the shoulder is supported by a removable thermal therapy pouch.