Hip and Knee

pin1 Duke St Campsie 2194

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Total Hip Replacement
Total hip replacement is one of the most consistently successful therapeutic measures in medicine and surgery today. It is a procedure that is done for the severe arthritic joint when other forms of treatment no longer have any benefit. It is a ‘quality of life’ operation and performed only when a patient is significantly disabled from pain, stiffness, loss of mobility and function. It is not done for minor arthritic joint pain.

The hip is a ‘ball and socket’ joint and bears the full weight of the body during walking. Cartilage lines the normal hip joint, allowing it to move in a smooth and free manner. In arthritis, the cartilage wears out and bone eventually grinds against bone producing pain and stiffness. When this becomes advanced, it is time to consider surgical replacement.

Preoperative investigations and assessment are carried out by a cardiologist physician to ensure that you are medically fit for surgery. You are admitted to hospital on the day of surgery and will be instructed in some of the simple exercises that are required after surgery: turning, coughing and deep breathing. These exercises help clear the lungs of anaesthetic and fluids that may collect. Prior to surgery, patients will receive a shave prep and an antiseptic scrub to the surgical area around the hip. The anaesthetist and surgeon will be in at some point and possibly the physiotherapist.

The surgical procedure involves removing the diseased joint and replacing them with new parts. A new socket is placed within the worn-out socket of the pelvis and a new ball and stem are inserted into the femur (thigh bone). These components are fitted together and since the painful diseased cartilage has been removed, there is generally a very quick relief of pain. The operation usually takes less than 90 minutes and the new joint is often immediately solid.

During the first few days after surgery, there is naturally some pain. This can be controlled adequately by medication. Within 24 hours after surgery patients are encouraged to sit and stand. Walking is approached gradually and with supervision so as to avoid injury and complications. It is very important to rebuild and strengthen the weakened muscles and surrounding soft tissues that support the joint with a physiotherapy and exercise programme. Patients should continue to rehabilitate themselves for several months after the surgery to obtain the maximum benefit.

As with any operation, complications may occur but fortunately this is uncommon. Blood loss requiring transfusion may be necessary after major hip surgery. This need can be reduced if anti-arthritic medications such as aspirin, anti-inflammatory medication and anticoagulant drugs are ceased at least 1 week prior to surgery. The development of deep vein thrombosis and its complications can be minimised by exercising your calf muscles regularly and with daily injections of an anticoagulant into your abdomen during the admission. Mechanical calf compressors will also be used to reduce this risk. Other complications are infection or dislocation of the prosthesis. Your physiotherapist will instruct you on how to avoid this. Very rare problems include nerve injury, vascular damage and fracture of the femur.

By the second week, most patients feel confident enough about their mobility and ability to manage at home to be discharged. Overall, patient satisfaction with the relief of pain and return to independence is extremely high and these good results remain so for more than ten to fifteen years in over 95% of cases.
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lk-imageDr. Leonard kuo
(MBBS Syd Univ)
(FRACS Orth)
(FAOrthA)

Dr Leonard Kuo has been in private Orthopaedic practice since 1995 and specialises in surgery of the hip, knee and shoulder. His particular interests are joint replacement arthroscopic treatment of rotator cuff tears, shoulder instability and sports knee injuries. He provides a general paediatric orthopaedic service with subspecialty care in congenital limb deficiencies.