Reduced arm function causes a decrease of quality of life in stroke patients. The JSU diagram (JSU: Jessa Sint-Ursula) has been proposed by Jessa Sint-Ursula as a model for rehabilitation of the upper limb after Stroke. The JSU diagram should be considered a guideline to determine the objectives needed to shape the rehabilitation of various stages of recovery. The diagram starts with upper limb rehabilitation from day one, even in the absence of sufficient trunk control. The bio-psycho-social model of the ICF has been used as a frame of reference when designing the JSU-diagram. The JSU-diagram is based on test results of the Trunk Control Test and the Brunnstrom- Fugl-Meyer upper limb assessment, which in turn are part of the clinical examination.