Hip replacement surgery is a common procedure performed on individuals suffering from severe hip arthritis or hip injuries. This surgery aims to replace the damaged hip joint with a prosthetic implant that functions like a natural joint, thus improving mobility and relieving pain. In this article, we will explore everything you need to know about hip replacement surgery and its various aspects.
Definition of Hip Replacement Surgery
Hip replacement surgery, also known as hip arthroplasty, is a surgical procedure that is performed to replace a damaged or diseased hip joint with an artificial joint, or prosthetic implant.
Anatomy of the Hip Joint
The hip joint is a ball-and-socket joint that connects the pelvis and the femur (thigh bone). The joint is lined with cartilage that cushions and protects the bones’ surface and facilitates smooth movement. The surrounding ligaments and muscles support the joint and help with movement.
Reasons for Undergoing the Procedure
There are several reasons why individuals may need to undergo hip replacement surgery.
- Hip osteoarthritis is one of the most common reasons. It is a degenerative joint “wear and tear”disease that causes stiffness and pain in the hip joint. This condition is caused by the breakdown of cartilage in the joint, which can be caused by ageing, injury, or other factors.
- Rheumatoid arthritis, which is an autoimmune disorder that causes inflammation in the joints. This condition can also lead to severe pain and stiffness in the hip joint, making it difficult to carry out daily activities.
- Avascular necrosis of the hip. In this condition, the blood supply of the hip is disrupted leading to secondary joint arthritis and pain.
- Fractures, dislocations, and other types of injuries can all lead to severe pain and reduced mobility, making it difficult to carry out daily activities.
If you are experiencing severe hip pain, stiffness, or reduced mobility, talk to your doctor about your options for treatment. Hip replacement surgery may be a viable option to help you regain your mobility and improve your quality of life.
Indications for Hip Replacement Surgery
Individuals with severe hip pain, stiffness, and reduced mobility that impact their daily activities and cannot be managed through non-surgical treatments, such as medication, physical therapy, or assistive devices, are candidates for hip replacement surgery. The decision to undergo surgery is based on several factors, including age, mobility, health status, and the extent of hip joint damage.
Types of Hip Replacement Surgery
There are two main types of hip replacement surgery: Total hip replacement (THR) and Partial hip replacement (Hemiarthroplasty).
- THR involves replacing the damaged hip joint with an artificial hip joint comprised of three parts: the acetabular cup, femoral stem, and femoral head.
- Hemiarthroplasty of the hip involves the replacement of only the damaged part of the hip joint. In this procedure, the proximal femur is replaced with a prosthesis while the original socket (acetabulum) is retained.
Risks and Complications of Hip Replacement Surgery
Hip replacement surgery is one of the most successful medical procedures. It is a routine, safe and effective treatment to alleviate pain in severe arthritis of the hip when performed by experienced hands.
It is routinely done with minimally invasive approaches and patients are placed on a customised enhanced recovery protocol. Most patients can be discharged in 1-2 days.
Hip replacement surgery, like any surgery, carries some risks and complications. Some of the common risks associated with hip replacement surgery include:
Infection: Infections can occur at the surgical site or deep within the joint. Most infections can be treated with antibiotics, but severe infections may require additional surgery or implant removal.
Blood clots: Blood clots can form in the leg veins after surgery, potentially causing serious complications if they travel to the lungs.
Dislocation: The artificial hip joint can become dislocated, especially during the early postoperative period. This may require additional surgery or non-surgical treatments to correct.
Nerve damage: Nerves near the hip joint can be damaged during surgery, potentially causing weakness, numbness, or pain.
Surgical Approaches to Hip Replacement
There are different surgical approaches to hip replacement surgery, including the Anterior, Posterior, and Lateral approaches. The approach used depends on the surgeon’s preference, the patient’s condition and preference, and the extent of hip joint damage. The anterior approach involves accessing the hip joint through the front, while the posterior approach is via the back. The lateral approach is through the side of the hip.
Dr Wang Lushun specialises in minimally invasive hip replacement surgery. He is recognised as a key opinion leader and regularly trains local and regional surgeons in all aspects of hip replacement surgery.
Preoperative Evaluation and Preparation
Before undergoing hip replacement surgery, the patient must undergo a preoperative evaluation to assess their overall health status, medication use, and medical history. The patient must also follow specific preoperative preparation instructions, such as fasting, discontinuing specific medication, and arranging for assistance at home after the surgery.
Prosthetic Components
The hip prosthetic implant consists of three main components: the acetabular cup, the femoral stem, and the femoral head.
- The acetabular cup replaces the hip socket’s damaged part and is made of metal, ceramic, or plastic materials.
- The femoral stem is inserted into the thigh bone and supports the femoral head.
- The femoral head is affixed to the top of the femoral stem and replaces the ball-shaped part of the hip joint.
Postoperative Care and Rehabilitation
After the surgery, the patient requires postoperative care and rehabilitation to minimise the risk of complications and ensure a faster recovery. The patient may need to stay at the hospital for several days after the surgery, depending on their health status and the extent of hip joint damage. Inpatient care may include pain management, physical therapy, and assistive devices such as crutches or walkers. Outpatient care may include home exercises and follow-up appointments with the surgeon.
Long-term Outcomes and Considerations
Hip replacement surgery has high success rates and is a highly effective way of relieving hip pain and improving mobility. However, some long-term complications can occur, such as implant wear and tear, bone loss around the implant, or infection. Therefore, patients must monitor their prosthetic implant and attend regular follow-up appointments with their surgeon to identify any problems early and manage them appropriately.
Alternative Treatments for Hip Arthritis or Injuries
Before considering hip replacement surgery, individuals can explore alternative treatments such as:
Lifestyle changes: Maintaining a healthy weight, engaging in regular low-impact exercise, and avoiding activities that exacerbate hip pain can help manage symptoms.
Medications: Over-the-counter pain relievers, anti-inflammatory drugs, and prescription medications can help alleviate pain and inflammation.
Physical therapy: A physical therapist can design a tailored exercise program to improve hip strength, flexibility, and function.
Conclusion
Hip replacement surgery is an effective treatment option for individuals suffering from hip arthritis or injuries that cause severe hip pain, stiffness, and reduced mobility. The procedure aims to replace the damaged hip joint with an artificial prosthetic implant, improve mobility, and relieve pain. By understanding the many aspects associated with hip replacement surgery, patients in Singapore can make a more informed decision when consulting their orthopaedic surgeon.
