Radiology is a special branch of medical science that uses various techniques of imaging for the diagnosis and the treatment of several types of diseases in the body. The different types of imaging techniques used in radiology are X-rays, Computerised Tomographic scan (CT Scan), ultrasound, Magnetic Resonance Imaging (MRI) and nuclear medicine which includes Positron Emission Tomography(PET).

Role played in evaluating hip replacement
Hip replacement surgeries have become extremely common in the recent times, and radiological evaluation remains the mainstay of the overall hip replacement procedure. Thus, the role played by radiology is quite significant in such situations. All the specific anatomical landmarks and the measurements are used to make sure the placement is perfect during the hip replacement surgery. Radiological imaging helps in the assessment of the following conditions that are as discussed below.

The length of leg
The inequality in the length of the two legs is prevalent after a hip replacement surgery which can create a great deal of discomfort and inconvenience to the patients. A greater difference in the length of the two legs increases the chances of dislocation, and this is a situation where radiological evaluation plays a crucial role. With the help of radiological imaging, the length of the legs can be made almost equal.

The horizontal center of rotation
In this case, horizontal center of rotation helps in the assessment of the acetabular component of the prosthesis. This is calculated by the measurement of the distance between the center of the head of the femur and the acetabular teardrop. This distance should be bilaterally equal, and it is just not possible without the help of the imaging techniques of radiology.

Acetabular inclination
The acetabular inclination is the angle formed between the face of the cup and the transverse axis. If the angle is less, then it results in a stable hip, but the abduction is limited. On the other hand, if the angle increases then there are high chances of dislocation of the hip. Thus, with the help of radiological evaluation, proper and effective angular inclination is given which is optimum for the patient.

The stem positioning of the femur
The main aim of the stem positioning of the femur in a hip replacement surgery is placing the stem in a position which is neutral within the shaft. To get a proper idea of the positioning, the imaging techniques are of utmost importance which cannot be achieved perfectly without the imaging.

Thus, the crucial role the different techniques of radiological imaging plays during the overall procedure of a hip replacement surgery can be perceived. With the use of the different imaging techniques, the results obtained are closer to perfection.

How Radiological Evaluation Can Help In Case Of Hip Replacement?

Hip arthroscopy is a minimally invasive surgical procedure in which doctors view the joint problem without making any cuts through the skin and other soft tissues. Hip Arthroscopy is performed to treat several hip problems.

In Hip Arthroscopy, the doctors insert an arthroscope (a small camera) into the hip joint. The pictures are displayed on a video monitor with the help of an arthroscope. The surgeons will use these images to guide the surgical instrument.

As the surgical instrument and arthroscope are very thin, the surgeons make a very small incision compared to the one that is done in open surgery. As a result, patients feel less pain and stiffness in joints. This type of surgery also takes less time to recover and one can return to their normal life within a short period of time.

Hip Anatomy:

The hip is a socket and ball joint. The socket is formed by a part of a large pelvis bone called acetabulum. The ball joint is on the upper end of the femur (thighbone). Articular cartilage is a slippery tissue that covers the surface of the socket and ball. It creates a frictionless and smooth surface that helps the bones to glide across each other easily. Strong fibrocartilage is ringed on the acetabulum called labrum. It creates a gasket around the socket.

The joint is surrounded by a ligament, which creates a capsule to hold the joint together. The inner surface of the capsule is lined by a membrane called synovium. It produces a synovial fluid that helps in lubricating the joints.

When to Recommend Hip Arthroscopy?

If a person is suffering from chronic pain and does not respond to any other nonsurgical treatment, including physical therapy and medication, doctors may recommend a person opt for hip arthroscopy.

Hip arthroscopy helps a person to get relief from many problems that cause painful symptoms including damaged articular cartilage, labrum, or other soft tissues. The damage can be the result of any form of injury. However, there are other orthopedic conditions that can also lead to damage. The orthopedic conditions include:

Femoroacetabular Impingement (FAI):

In this type of disorder, an extra bone is developed on the femoral head (cam impingement) or along the acetabulum (pincer impingement). The overgrowth of the bone is known as spurs that damage the soft tissues surrounding the hip joint. In most cases, the bone spurs develop in either part. However, there are cases in which the bone spurs develop in both femoral head and acetabulum.

Dysplasia:

In this condition, the hip socket is abnormally shallow. Due to this problem, more stress is put on the labrum in order to keep the femoral head within the socket. This may raise the condition of the labral tear.

Snapping Hip Syndrome:

In this condition, the tendon rubs across the hip joint repeatedly. This type of popping or snapping is generally harmless and can be repaired without any treatment. However, the tendon may be fully damaged due to continuous rubbing in some cases.

Other conditions where hip arthroscopy is recommended include synovitis, hip joint infection, and labral tear.

Arthroscopic Femoroacetabular Surgery:

If the diagnosis results show that damage is caused by femoroacetabular impingement and a patient is not getting relieved from pain by any nonsurgical method, doctors recommend going for Arthroscopic Femoroacetabular Surgery.

In this type of surgery, the doctor repair and clear out the damage of the articular cartilage and labrum. He may also trim the rim of the acetabulum bone and shave the bump of the femoral head.

Arthroscopic Labral Repair:

If patients are not getting relief from conservative treatment, doctors recommend Arthroscopic Labral Repair. In this type of surgery, surgeons cut out and remove the damaged or torn part of the labrum. He further repairs the torn part by sewing it.

Take Away:

Both treatment methods are minimal incision processes and require fewer hospital stays. However, it is always advisable to consult a doctor before opting for any treatment.

Know More About Hip Arthroscopic Surgery!

Mobility for a person is very important, and when you look through, the hip is a very important component to this. It connects the upper and lower parts of the body and helps in movement. It is a ball and socket joint, where the hip bone provides a socket, into which the upper part of the thighbone (femur) sits into, allowing for free movement.

Like any other human organ, the hip also is prone to damage. Be it natural ageing, infection, injury, or diseases, hip movement can be affected, leading to limited movement and increased pain and stiffness. For these people, being able to get back a hip which will allow them to be back on their feet is a boon for sure. It helps in relieving pain and improving mobility, almost giving people a second lease of life.

Reasons for hip replacement:

With natural ageing, the hip joint can lose its ability to move, due to normal wear and tear of the hip and thigh bones
Diseases of the hips (infectious or autoimmune) can also lead to hip replacement
Injury or trauma is another major cause that requires hip replacement
Joint problems, leading to repeated dislocations
Tumours of the relevant bones
Understanding the procedure in detail

The affected bones (whether diseases or worn out) are replaced with a prosthesis which is compatible with the normal body tissue.
While some materials fuse to the natural bone, others do not and are simply placed as a separate unit
This is a surgery which requires hospitalisation and stays for up to 5 days depending on patient s overall health condition
The entire procedure may take a couple of hours and is usually done under general anaesthesia
An incision is made through the side of the hip
Both the hip and the thigh joints are prepared, diseased tissue removed, re-shaped, etc. to make way for the prosthesis
The prosthesis is introduced through the same incision and positioned into place
As noted earlier, there are two types. The ones which fuse to the bone have pores in them into which normal bone eventually grows.
The other variety is the cemented version, and a glue is used to keep it in place
Most doctors now use a combination, that is cement a porous prosthesis, into which bone will grow, and the incisions are closed
The patient stays in the hospital for 1 to 4 days depending on overall health
Once discharged, infection and pain control are continued
Exercise and physiotherapy play a major role in restoring normal function
Weight management is also very important

Hip Replacement - Understanding The Procedure In Detail!

Total Hip Replacement is also known as Total Hip Arthroplasty, in which the damaged cartilage and bones in the hip area are removed and replaced with prosthetic components. On the other hand, Total Knee Replacement, also known as Total Knee Arthroplasty or resurfacing, involves replacing the bone surface of the knee area. 

Causes of Hip and Knee Pain 

Arthritis is the most common cause of chronic hip and knee pain or disability. Other causes include: 

  Avascular necrosis or Osteonecrosis is a condition where there is an inadequate supply of blood to the femoral head due to a hip injury. The inadequate supply of blood may cause the bone surface to collapse and this can result in arthritis. 

  Rheumatoid Arthritis is the most common inflammatory Arthritis. In this condition, the synovial membrane surrounding the joint begins to thicken and become inflamed. This results in cartilage loss, stiffness, and pain. 

  Osteoarthritis is the type of arthritis, usually related to old age but can occur among young people too. The cartilage cushioning the hip and knee bones becomes soft and gradually wears off. The bones eventually start rubbing against each other which causes stiffness and pain in the knee and hip area. 

  Post-Traumatic Arthritis can follow a severe hip and knee fracture or injury. 

  Some children with hip disease or problem, even after treatment, can develop into arthritis later. This may be caused by uneven or unusual growth of hip which affects the joint surfaces. 

Knee Replacement Procedure 

  Bone Preparation: The surface of impaired cartilage at the end of the tibia and femur are separated besides a small extent of the underlying bone. 

  Locating the Metal Implants: The removed bone and cartilage are substituted by metal implants creating the joint surface. These metal pieces may either be press-fit or cemented into the bone. 

  Resurfacing the Patella: The undersurface of the kneecap or Patella is cropped and reformed with a plastic button. This process is variable depending upon the condition. 

  Inserting a Spacer: To form a smooth gliding surface, a plastic spacer of medical-grade is positioned between the metal components. 

Hip Replacement Procedure 

  Metal stem replaces the damaged femoral head and positioned into the femur s hollow center. 

  On the upper portion of the stem, a ceramic or metal ball is planted. This ball acts as a substitute for the damaged/detached femoral head. 

  The damaged Acetabulum or cartilage surface of the socket is discarded and supplanted by a metal socket. Cement or screws are used to sustain the socket in place. 

  A spacer, either metallic, plastic or ceramic is placed between the socket and the new ball for a smooth gliding surface. 

Take Away 

Knee and Hip Replacement are taken as the last option for the patient. The surgery and its outcome vary depending upon various factors. One should consult the doctor before undergoing for the Hip and Knee Replacement Surgery.

Primary Knee & Hip Replacement - Know More About Them!

Hip replacement is a surgery in which a specialist doctor surgically removes an agonizing hip joint afflicted with arthritis and replaces it with a man-made joint usually produced using metal and plastic elements. It is usually done when all other treatment choices have been tried and have proven unsuccessful in providing satisfactory pain alleviation. The technique is to mitigate the pain in ahip joint, in order to make walking and other physical exercises easier.

The surgical procedure is as follows:

Hip replacement surgery can be performed generally or by utilizing what is called a non-obtrusive method. The primary difference between the two methodologies is the number of entry points needed for the surgery.
During standard hip replacement surgery, you are given general anesthesia to relax your muscles; this will keep you from feeling any pain during the surgery or being awake during the surgery. A spinal sedative might be given to counteract pain as an add-on option.
The specialist will then make a cut at the edge of the hip and move the muscles connected to the highest point of the thighbone to uncover the hip joint.
Next, the ball part of the joint is taken out by cutting the thighbone with a saw. At this point a fake joint is attached to the thighbone using a material that allows them to stay intact.
The specialist then readies the surface of the hipbone - evacuating any harmed ligament - and joins the substituting attachment to the hipbone.
The new ball part of the thighbone is then embedded into the new joint part of the hip. The specialist then reattaches the muscles and shuts the entry point.
There are some things you need to keep in mind and be attentive about, post the surgery. These are as follows:

You will probably remain in the healing facility for four to six days and may need to remain in bed with a pad between your legs to keep the new hip joint set up.
A seepage tube will be set in your bladder to help you urinate without having to walk to the bathroom.
Non-intrusive treatment usually starts the day after surgery and within the days you can go around with a walker or a walking stick.
You will continue with the non-intrusive treatment for quite a long time which could be a number of months post the surgery.
For anywhere in the range of six to twelve months after hip replacement surgery, rotating or putting pressure on the operated leg needs to be limited to a great extent. You need to likewise not cross the operated leg past the midline of the body nor turn it inwards.
You cannot twist the hip past ninety degrees. This includes both twisting forward at the abdomen and crouching.
Your physical advisor will tell you the methods and equipment that will help you comply with the above rules and precautionary measures while performing every day exercises.

Hip Replacement - Things You Must Keep In Mind!

Physiotherapy plays a pivotal role in helping a person recover after a hip replacement surgery. It brings back the old flexibility and prevents blood clots in the area where the procedure has taken place. After the surgery team gives its green signal, a physiotherapist starts working with a patient for a full recovery. 

Here is a list of some common exercises that a physiotherapist suggests after a hip replacement surgery:

Walking: It is important to use the crutches for a time period of 4-5 weeks post the procedure. Until the surgeon or the physiotherapist advises against using the crutches, it makes sense to use it while walking. It makes sense to retain the normal walking posture by using the crutches rather than limping without it. A physiotherapist reviews the pressure exerted by the arm while holding a crutch, before advising the patient to get rid of the crutches.
Increasing hip flexibility: This is a basic form of exercise where an individual lies on one side of the body with knees and hips bent. A pillow is placed in between the knees. While doing this, it should be ensured that both the feet is kept together and the back muscle is not twisted. The top knee should be slowly raised like an opening of the calm shell. This position should be maintained for 4-5 seconds.
Strengthening the hips: The body should rest on the stomach. The buttocks should be tightened and one leg should be slowly lifted. This position should be maintained for a stretch of 3-5 seconds. The same should be repeated for both the legs.
Strengthening the hip and the stomach muscle: The body should rest on the back with a leg bent. The stomach muscle should be tightened and the bent leg should be lifted carefully while ensuring that the bend does not supersede more than 90 degrees. While keeping the stomach muscle tight, the lifted leg should slowly come down to touch the surface. This act should be repeated for 5-6 times.
Strengthening the thigh muscle: While sitting in a steady chair, an elastic loop should be wrapped around the ankles. The elastic loop should be stretched with one leg while keeping the other foot firmly rooted to the ground. The lifted foot should slowly come down to the normal position. The same act should be repeated for 4-5 times.
Improving balance: An elastic loop should be tied to one leg of a table and the other end of the loop should be tied to one ankle. The table should be held on for maintaining balance. Maintaining an erect position, the tied up ankle should be stretched sideways. The position should be maintained for 3-5 seconds to return back to normal standing position.

How Physiotherapy Can Improve Recovery After Hip Replacement Surgery?

Don't wait any longer, manage your Hip Resurfacing online with a Lybrate doctor today

Consult for Hip Resurfacing - Online and Easy!

FilterClear All

COMMON SPECIALITIES

COMMON ISSUES