Physician Portal

A Message from Dr. John Tata

We at Hartford Walking Systems realize that you want and deserve the most up to date, clear and concise information about the rapidly changing field of walking assist devices.

Every day amputees are facing physical, psychological and social challenges. As a practicing radiologist for over 25 years I had little direct interaction with the world of the amputee; that is until my brother-in-law Peter (and HWS President, Joe Schrader's cousin) required a BK amputation because of a clotting disorder. It was at that time that the challenges and obstacles amputees face every day became a real part of my world. Peter presented a unique set of challenges for Joe Schrader. A redesigned LegSim enabled him to use the device in spite of paralysis on his left side and blindness in his left eye. You can read more about him under the "Case Studies" section and view his videos.

The Physician Portal has been expanded to include articles and case studies and the many complications faced when individuals become immobile. I invite our professional colleagues to contribute to this forum so that we can all learn and benefit from our shared experiences.

In order to help you navigate the complex world of reimbursement for assist devices, I have added an article on "How to Write a Letter of Medical Necessity." It provides you and your health care provider with valuable insights into the information insurance carriers and Medicare use in the evaluation and decision process. The team has made great strides with national insurance carriers including TRICARE which now will cover the cost of the LegSim.

We continue to partner with researchers to better understand how the biomechanics of the LegSim affect wear and tear on joints while at the same time providing a more independent lifestyle. We will update you as the outcomes of this research become available.

Hartford Walking Systems remains committed to you: our prospective patients, healthcare providers, physical therapists and prosthetists. If there are topics you would like us to address, please contact me at


John A. Tata, MD
Medical Director
Hartford Walking Systems, Inc.