A five-year empirical interventional study monitors the efficacy of vitamin D in rehabilitation practice in 543 pediatric and adult patients with vitamin D deficiency. Individualized yet systematic adminis- tration of Calciferol forte i.m. or oral Vitamin D forte in rachitic deformities, scolioses, vertebropathies, gonarthroses, coxarthroses, osteoporoses as well as fractures has resulted in a long-term thera- peutic benefit without side effects.

        Key words: Calciferol – prevention and treatment, rickets, osteoporosis, arthroses, fractures