Talking about Total Hip Arthroplasty

  Joint pain caused by advanced femoral neck fracture, advanced femoral head necrosis, rheumatoid arthritis, and osteoarthritis seriously affects the quality of life of patients. Total hip arthroplasty can reduce hip pain, improve function, and enhance quality of life.  The current effectiveness of THA: over 90% of patients can achieve more than 15 years.  Total hip arthroplasty is generally classified according to the type of prosthesis chosen: biological (non-cemented) prosthesis and cemented prosthesis.  According to practice and literature, biologic prosthesis is basically used on the acetabular side, while biologic and non-biologic prosthesis can be used on the femoral side internationally. The cemented prosthesis is fixed by injecting the cement of the malleolar phase into the femoral medullary cavity and then inserting the femoral prosthesis, which interlocks with the femoral trabeculae to achieve immediate stability and allows the patient to walk on the ground immediately after surgery. The implantation technique of biologic prostheses emphasizes on the pressure-fit to achieve initial stability, which is commonly known as the degree of bone fracture with a little more force. Secondary stability will be achieved by bone ingrowth or bone ingrowth in the future.  There are currently three types of prosthetic options for THA (depending on the friction interface) metal – polyethylene, metal – metal, and ceramic – ceramic. Each has advantages and disadvantages.  For elderly patients with a short life expectancy, metal-polyethylene prostheses are an economical choice.  For some patients with dysplasia, shallow acetabulum, smaller patients can consider ceramic – ceramic prosthesis, the most wear-resistant, but of course the ceramic also has the possibility of shattering, and squeaking.  For patients with higher mobility requirements, metal – metal prosthesis is recommended, because it can be used with a large head, high mobility and low dislocation rate. Of course whether metal ions are harmful to the human body, there is not a long enough follow-up. It is not recommended for women who still want to have children and for patients with poor renal function.