Overview
A prosthesis is an artificial replacement for a missing body part, usually a limb. It may help with standing, walking, balance, grasping, or other daily tasks, depending on the type. Modern prosthetics vary widely, from simple cosmetic devices to highly specialized devices with mechanical or electronic parts. A prosthesis is usually custom fitted and may need changes over time.
Causes and Risk Factors
People may need prosthetics after limb loss from injury, diabetes-related complications, blood vessel disease, cancer, infection, or congenital limb difference present at birth. Access to trauma care, diabetes care, and rehabilitation services can affect who receives a prosthesis and when. Problems with circulation, wound healing, or severe joint stiffness can make fitting more difficult. Emotional stress, cost, and transportation barriers can also affect prosthetic use.
Who Is Affected
Prosthetics may be used by children and adults of any age. Some people have limb differences from birth, while others lose a limb later in life. Needs differ by age, health, type of work, home setting, culture, and personal goals. Some people choose a prosthesis for specific activities, while others prefer other mobility or assistive devices.
Prevention
Not all causes of limb loss can be prevented, but some risks can be lowered. Road safety, workplace safety, prompt treatment of injuries, and management of diabetes and blood vessel disease may reduce preventable amputations. Regular foot care is especially important for people with diabetes or poor circulation. Early rehabilitation after surgery or injury may help prevent stiffness and support later prosthetic fitting.
Diagnosis and Tests
Assessment for a prosthesis usually includes a physical exam, review of the residual limb, strength, range of motion, balance, pain, and skin condition. A prosthetist and rehabilitation team also ask about daily activities, work, hobbies, and goals. Measurements and casting or digital scanning may be used to create a custom socket or device. Follow-up visits are important because fit and function can change.
Treatment Categories
Prosthetic care often includes surgery follow-up, wound care, pain management, physical or occupational therapy, and training to use the device. Different prostheses may be designed for basic walking, sports, fine hand use, or appearance. Liners, sockets, suspension systems, and components such as knees, ankles, hooks, or hands are chosen based on individual needs. Repairs, part replacement, and periodic refitting are common parts of treatment.
Living With It
Learning to use a prosthesis can take time, practice, and support. People may need help with skin care, putting the device on and off, cleaning, balance, and preventing falls. Daily routines, work tasks, and travel may need adjustment, especially during the first months. Peer support, counseling, and rehabilitation services can help with confidence, body image, and independence.
Diet and Lifestyle
A balanced diet, hydration, sleep, and regular activity can support recovery, energy, and skin health. Maintaining a stable body weight may help keep prosthetic fit more consistent. People with diabetes, circulation problems, or reduced sensation should pay close attention to skin checks and foot or limb care. Smoking can harm circulation and healing, so avoiding tobacco may support rehabilitation.
When to Seek Medical Care
Seek medical care if the prosthesis becomes painful, stops fitting well, causes skin redness that does not fade, blisters, sores, swelling, numbness, or repeated falls. Also get help for phantom pain, back pain, or joint pain that interferes with daily life. Children should be reassessed regularly as they grow. If a device is damaged or suddenly works differently, contact the prosthetics team.
When It May Be an Emergency
Get urgent medical help for signs of severe infection such as fever with worsening redness, warmth, pus, or a bad smell from the residual limb. Seek emergency care after a major fall, head injury, sudden severe swelling, uncontrolled bleeding, chest pain, or trouble breathing. A prosthesis should not be used if it appears broken in a way that could cause injury.