Pongratz Orthotics & Prosthetics, Inc. ("POP") - orthotics and prosthetics company established by Joseph S. Pongratz in 1997. Providing complete orthotic and prosthetic care, including pedorthic, soft goods, mastectomy breast prosthesis, plagiocephaly cranial band and banding, upper extremity prosthetics, lower limb prosthetics, pressure garments for burns, specialized burn care services, and custom orthotics. Schedule your same-day appointment online or call us today. Get a Second Opinion on Your Diagnosis. Our Avondale office is located just off the I-10 Freeway and Dysart Road --in the Rancho Santa Fe Center -- on Rancho Santa Fe Boulevard in Avondale, Arizona.