Quadriceps Exercise chair is very effective and used as a tool in the field of Physiotherapy & Rehabilitation.It enables exercise in sitting position i.e. instance knee stretching and exercise in reclining position i.e. knee flexion & hip stretching.It has adjustable backrest position, which include a full range of lower and extremity exercises. Backrest can be adjustable with any angle of flexion (0 to 90 Degree). Resistance exercise can be adjusted both by increasing & decreasing the weight.