Final answer:
Fixed prosthetics are indicated for joint conditions like osteoarthritis and traumatic injuries to restore function and alleviate pain, but are not suitable for patients with active infections or insufficient bone stock.
Step-by-step explanation:
Fixed prosthetics are commonly used in the treatment of various joint conditions and injuries, particularly when there is significant damage or degeneration. The primary indications for fixed prosthetics include joint conditions such as osteoarthritis, rheumatoid arthritis, and traumatic injuries where the natural joint is no longer functional or causes significant pain and disability. In these cases, joint replacement surgery with a fixed prosthetic can restore function and alleviate pain. Fixed prosthetics are quite durable and designed for a wide range of activities, though they do have a limited lifespan and may wear out more quickly in young or very active individuals.
There are several contraindications for fixed prosthetic devices. Patients with active infections, insufficient bone stock to support the prosthesis, or severe muscular or neurological disorders that impede proper joint function may not be suitable candidates for fixed prosthetics. Additionally, certain conditions such as osteoporosis can weaken bones and increase the risk of complications such as fractures during or after the surgery. The role of comorbidities and the patient's overall health status must be carefully considered prior to any surgical intervention involving fixed prosthetics.
It's vital that prosthetic components be properly aligned to ensure optimal function and longevity of the joint replacement. Current research in the field of prosthetic design seeks to enhance durability, with materials like carbon fiber offering potential improvements.