In a real life situation, the shoe spring attachment finds its use in persons with clinical foot disorders such as plantar fasciitis and the heel spurs which are commonly precipitated by stress from walking and standing. This accessory would be installed into the users’ footwear and would offer comfort and therapy during the course of the activities performed by the user.

Scenario 1: Daily Activities and Walking
For instance let’s think of a patient with plantar fascitis, an ailment that results to sharp, stabbing pain in the heel of a patient’s foot, worse when one starts to walk in the morning after waking up from bed or after they have been sitting for a long time. As the patient starts their activities for the day they wear the shoe with the spring attachment. With each step, the spring mechanism compresses under the patient's weight during the heel strike, absorbing the shock that would typically travel through the heel and cause discomfort. The compression of the spring reduces the impact forces, significantly minimizing pain during walking or standing.
The spring then re-extends when the patient brings his/her foot up so as to release energy to move the foot. This motion replicates the normal walking pattern, so that it becomes easier for the user when walking. In time, the use of the attachment strengthens this activity to stretch the plantar fascia and lessen tension in the area.

Scenario 2:  Physical Therapy & Rehabilitation
If a patient is in a rehabilitation process after having his foot operated on or suffering from heel spurs, the shoe spring attachment can be incorporated in the entire program of physical therapy. During physical therapy sessions it is possible to use the device while performing conventional walking or light jogging exercises. The shock absorbed in the spring mechanism helps to reduce excessive stress on the foot during such activities and the patient feels comfortable in doing rehabilitation without a worry that pain or injury will worsen.
Besides, since the attachment mimics toe walking it assists in correcting poor foot positioning and stretches out the plantar fascia, a particular advantage for individuals who have undergone plantar fasciitis treatment. This aspect of the device assists the foot muscles and tissues to slowly gain flexibility as well as strength through time.

Simulation: Stress Testing and Performance Analysis
Before use by the patient, the shoe spring attachment would go through failure simulations to establish whether it works correctly when used in real conditions. Stress tests would be carried out under closely controlled conditions to mimic the forces and loading of these various users, over specific periods, with different foot sizes, masses, and varying degree of foot pathology. The attachment itself would be assessed based on the biomechanics of force loading, the ability to counter a range of loads in daily walking, and gradual degradation over use.
To assess the device’s effectiveness a simulation to replicate real-life conditions is used. Biomechanical analysis is done using computer-aided design (CAD) and finite element analysis (FEA) to simulate the forces and stresses acting on the attachment during walking. Distribution of pressure across the heel and sole during walking is simulated using FEA where it is evident that the attachment reduces stress on the plantar fascia.