What is a Hip Replacement?

A hip joint replacement operation involves removing the damaged bone, replacing the head of the femur and re-lining the hip socket (acetabulum), see Figure 2. The type of replacement operation or components used will depend on the degree of damage to the joint surfaces, your surgeon’s preference and your suitability for a particular joint. A hip replacement joint has a long metal femoral stem which sits inside the thigh bone; it has a ball which replaces the damaged femoral head (this may be metal or ceramic) and a cup which re-lines the hip socket (this may be plastic or ceramic), see Figure 3.These components may or may not be cemented into place. Your surgeon will discuss what type of hip replacement is most suitable for you.

Some people find that their operated leg feels a bit longer or a bit shorter than the other leg. This usually corrects over time. If it is still a problem after several months you can get a raise on your shoe to level the legs out. Some patients require a blood transfusion or iron tablets after their operation. We will discuss this with you if necessary.

Precautions

To prevent you placing your hip in positions that may lead to dislocation please follow the precautions below. You should follow these for 12 weeks:

1.Do not bring your operated leg past the midline of your body i.e. do not cross your legs or ankles (Figure 4).
2.Do not bend your operated hip up past 90° i.e. when sitting do not bend down or forward and do not   let your knee become higher than your hip level (Figure 5).
3.Do not let your operated leg twist or rotate inward i.e. when turning make sure you take small steps around instead of twisting your hip and don’t roll onto your side when getting out of bed (Figure 6).

Physiotherapy

Physiotherapy
The physiotherapist will visit you either the afternoon of your operation or the next morning. They will teach you exercises to increase the circulation in your legs and increase the movement and strength of your hip. These are important because the muscles around your hip are often weak and tight. This is because the pain and stiffness of the arthritic hip stopped you from moving it normally. It will help if you start these exercises straight away unless we tell you otherwise. We will show you how to use your walking aid safely.
We aim to have you walking the next morning.
After your operation the physiotherapist will continue with your exercises and practice walking. You will use a walking frame to walk initially and will progress onto elbow crutches or walking sticks as soon as you are ready. You will also practice going up and down stairs before going home.
At present we aim to get people home within 3-5 days of their operation but this varies and you may get home sooner or later than this.

Please note: there may be some circumstances when your surgeon does not want you to start exercises straight after your operation. If this is the case then your physiotherapist will tell you.

Hip Replacement Exercises

Please note: there may be some circumstances when your surgeon does not want you to start exercises straight after your operation. If this is the case then your physiotherapist will tell you.

Getting in and out of bed

Whilst in hospital the physiotherapist, occupational therapist and nursing staff will show you how to get in and out of bed safely. You will practice from whatever side of the bed you get in at home. The main thing to note is that you should not roll onto your side while doing this as this can cause your hip to twist (Figure 7 and 8).

Hip recovery processes
Hip recovery processes
Standing Up and Sitting Down

Standing up

To stand always make sure that you place your hands on the bed or chair. Your operated leg should be out in front of you before standing up. Push through your hands and stand up taking most of your weight through your un-operated leg (Figure 9). Do not hold or pull on an object such as a walking frame as these can easily move or tip causing you to fall backwards.

Sitting down

Always make sure you can feel what you are going to sit on at the back of your legs before sitting. Place your hands back onto the chair or bed and sit down slowly sliding your operated leg out in front of you (Figure 10). The occupational therapist will check that your chair is not too low.  We encourage you to sit as normally as possible (do not sit at the edge of your chair with your leg out in front of you). As long as your knee is not above your hip when you are sitting, your position will be fine. Do not cross your legs whilst sitting as this can be harmful to your hip.

Hip recovery processes

Figure 9

Hip recovery processes

Figure 10

Walking

nitially you will walk with a frame and progress onto elbow crutches or walking sticks as soon as you are able (Figure 11). You may not be allowed to put your full weight through your operated leg for at least 6 weeks after your operation. If needed, your physiotherapist will teach you how to do this. To walk, move the walking aid forward. Step forward with your operated leg. Take some weight through your arms as you step forward with your un-operated leg. When turning, make sure that you take small steps. Do not twist on your operated leg.

Hip recovery processes

Figure 11

Going up and down stairs

If a handrail is available then always use it as well as one crutch or stick. Your physiotherapist will teach you how to carry your other crutch or stick up the stairs as you will need it when you get to the top.

Going up stairs (Figure 12)

1. Place your un-operated leg up onto the step

2. Lift your operated leg onto the same step

3. Bring the crutch or stick up onto the same step Figure 12

Going down the stairs (Figure 13)

1. Place your crutch or stick down onto the  step below

2. Step down with your operated leg

3. Bring you run-operated leg down onto the same step Figure 13

Hip recovery processes
Figure 12
Hip recovery processes

Figure 13

Occupational Therapy

It is important that you follow the precautions against dislocation in everyday activities. During the first 12 weeks, you may need some equipment and, or adaptations to perform certain activities of daily living safely.  You may also need to modify the ways in which you carry out some activities. The occupational therapist (OT) will give you advice on both these aspects, and will assess what would be most appropriate for use in your home. Where possible the OT will see you at the pre-operative assessment clinic and can arrange delivery and fitting of any equipment that you may need.

Bending and dressing lower half

Do not bend to pick things up off the floor or to reach to your feet. To prevent you from doing this the OT will provide you with long handle aids (helping hand and shoe horn) and teach you how to use these.

Hip recovery processes

Figure 14

Seating

To prevent your hip bending too much you should sit in a chair that is an appropriate height. If your chair at home is too low it is usually possible to raise it using special blocks or with a cushion. The OT will discuss this with you.

Bed

You should avoid sleeping in a low bed. Where necessary and if possible, the OT can arrange to have your bed raised.

Toilet

A raised toilet seat and, or rails may be required. The OT can supply these if you need them.

Bathing/ Showering

Remain seated while you shower or wash and take care not to twist round while sitting on board. If necessary get somebody else to operate the shower controls.

Getting In and Out of a Car

Getting into a car

1.          Move the front passenger seat back as far as it goes and recline the chair.

2.          Put a pillow on the seat to make it higher if necessary.

3.         With your back towards the seat, sit down with your operated leg stretched out in front.

4.          Gradually move your bottom backwards and turn to face forwards. Help your operated leg into the car with your hands. Do not twist.

Getting out of a car

1.          Move your bottom to the edge of the seat.

2.          Help your legs out of the car and move your bottom round.

3.          Stretch your operated leg out in front of you.

4.           Stand up leaning most of your weight through your un-operated leg.

Do not drive for six weeks after your operation.

Hip recovery processes

Figure 15

Information for When You Go Home

You will normally go home 3-5 days after your operation. You should arrange for family or friends to take you home by car.

Homecare

Homecare can be arranged if you do not have anyone to help at home but only if it is absolutely necessary.  They can assist with personal hygiene, shopping, cooking. Please think about this in advance and discuss with the nursing staff so there is adequate time to organize.

Wound

For a while after you go home, your wound may appear red, warm to touch or the wound may feel itchy. You may have swelling which can affect your whole leg. You may also have a change in sensation around your wound. In most cases these are normal after your operation.

If you notice a marked change and the area around your wound becomes much redder and is very hot and swollen, or if you develop any discharge from your wound it is important that you get this checked for signs of infection as soon as possible. If you area worried about infection or have developed a discharge please go to the emergency department immediately

Pain

It is important that you continue to take regular painkillers once you are home. Remember painkillers can make you constipated so please drink plenty of fluids and have fibre in your diet. Painkillers are important to control your pain and to allow you to continue to do your exercises.

Swelling

When you go home it is important that you have regular rest and raise your leg (not higher than your hip). If you notice that your operated leg is swelling please rest more between your exercises.  This is not unusual. Please note if your calf is hot, swollen and painful to touch then come to the emergency department immediately. If you suddenly become very breathless and do not normally suffer from breathing difficulties then you should go to the emergency department immdiately

Exercises

Continue to do the exercises you were shown in hospital 2-4 times every day. Hip movements and the strength in your leg will gradually improve over time.

Walking

Try not to sit for long periods. Go for short walks regularly and keep using your walking aid(s) as instructed by your Physiotherapist. Depending on your type of hip replacement you may need to use 2 crutches for 6 weeks after the operation. Build up your walking distance gradually from short distances around the house to getting out and about. After 6 weeks you can gradually start to wean yourself off the walking aids. If you start to use 1 stick or crutch use it on the opposite side from your new hip.

Sleeping

Continue to sleep on your back for six weeks after your operation. After this you can sleep on your operated side or on your un-operated side if necessary but you should place a pillow between your legs (Figure 16). It is also good to lie flat for at least half an hour each day to stretch out the front of your hip.

Hip recovery processes

Figure 16

Gardening

Do not garden for the first 12 weeks. After this you still need to be careful to avoid twisting or excessive bending at the hip. You should avoid digging for several months.

Physiotherapy

Routine physiotherapy follow up is not usually necessary. However your physiotherapist can arrange this if needed.

Driving

You should avoid driving for 6 weeks after your operation. This allows some healing to take place and the leg muscles to become stronger. . Only return to driving when able to comfortably and safely change gear and carry out an emergency stop. Avoid any long journeys at this stage.

Flying

There is no universal agreement on this, however we advise you to avoid short-haul flights for 6 weeks after your operation and long haul flights for a minimum of 3 months.   If you are flying remember to do some circulatory exercises and if possible get up and move around. At 6 months after your operation the risks associated with sitting for long periods will be back to what they were before the operation.

Return to activity and work

As soon as the wound heals you may start gentle activity such as swimming, however you should avoid breaststroke for 3 months. Swimming is beneficial because you are not weight­ bearing and therefore puts less stress on the hip joint and the buoyancy allows you to move and exercise easier. Activities such as golf or bowls can be played 3 months after your operation.  Avoid high impact sports such as jogging, skiing, squash and high impact aerobics are best avoided.

Follow-Up

Your follow up appointment will be 2 weeks after the operation for a wound inspection and at 6  weeks after your operation. The purpose of the appointment is to monitor your progress and to offer advice, reassurance and information on any aspects of your surgery and recovery. You may have an x-ray carried out at this time to help us monitor your progress.