T80-T88: Complications of surgical and medical care, not elsewhere classified

T84: Complications of internal orthopaedic prosthetic devices, implants and grafts

The T84 group comprises conditions related to complications arising from internal orthopaedic prosthetic devices, implants, and grafts. These complications develop when the body reacts abnormally to the foreign objects, affecting bone, muscle, and joint function. These may include infections around the implant area, loosening or dislocation of the device, or abnormal reactions to the material of the device, such as metal or plastic. Other complications can include nerve damage, blood clots, and fracture of the bone surrounding the implant. Symptoms could vary widely depending on the site and nature of the complication, but commonly include pain, swelling, decreased mobility, or change in limb length. The causes may be multifactorial, involving surgical factors, device factors, patient’s health, and post-surgery care.