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10 9 8 7 6 5 4 3 2 1 Intraarticular steroid and local anaesthetic injections have a dual role in management of patients with hip O A. Not only does it relieve pain but it is also a very accurate test for localising the source of groin pain and ruling out causes for referred pain to the hip joint, spinal pathology. The main cautions in performing this procedure are to always use fluoroscopic guidance and to definitively rule out infections prior to steroid injections. Other injectable compounds such as hyaluronic acid (Hyalgan) are commonly used for their viscoelastic and lubricating qualities in the knee but no such effects have been shown to occur in the hip joint. To our knowledge level 1 evidence has not been published thus far to establish the efficacy of intra-articular hyaluronic acid for O A of the hip. Total hip replacement is a surgical procedure in which both damaged surfaces of the hip joint are replaced with prosthetic substitutes. It was first performed in the 1960's and is said to be one of the most successful surgeries in the last few decades. The principal clinical indication for total hip replacement is end-stage arthritis, with joint pain and stiffness that is resistant to non-operative treatments The goal of this surgical procedure is to relieve pain, improve joint mobility, and restore or improve a person's ability to safely perform functional activities like walking, standing, stair climbing, or running. Within 5 years of hip replacement, 10% of patients can have continuing pain or poor joint function. Total hip replacement is a frequently done and highly successful surgical intervention. Modern total hip replacement can improve patient quality of life more than any other elective surgical procedure. Worldwide, more than 1 million total hip replacements are done each year Patient-reported outcome scores that measure pain, function, quality of life, and satisfaction are used alongside survival analysis to assess the outcome of hip replacement. During a hip replacement, the head of the femur is replaced with a prosthetic head on a shaft, and the joint surface of the acetabulum is lined with a bowl-shaped synthetic joint surface. Patient-specific predictions of surgery outcomes are central to the decision process, and patients should be provided with clear personalised information. Important considerations before choosing total hip arthroplasty are age, activity status, the patient's expectations and medical conditions based on radiological disorders. In the end it’s the surgeon, together with the patient, decides if a total hip replacement is the best solution for the patient. Selection of implant combination type is determined by multiple factors: surgeon preference, such as surgical training and skills; patient factors, such as age and bone shape; healthcare provider factors, such as cost pressures on hospitals and availability of implant combinations; and ultimately the available evidence in the literature. Also Digital planning of cup and stem for total hip arthroplasty is important for calculate the hip offset, femoral offset, Horizontal position of the centre of rotation and probabibly implant selection and positioning.