OrthoDocs New Zealand | 37 Dublin Street | (06)242 4000
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    Providing Specialist Orthopaedic Services in Whanganui

Andrew Thompson Orthopaedic Surgeon

Andy is currently appointed as a Consultant Orthopaedic Surgeon at Whanganui Hospital and holds private clinics at 37 Dublin Street, Whanganui.

Andy was born in Newcastle upon Tyne, UK and went to medical school at both St Andrews University, Scotland and Manchester University in England.  After qualifying as a doctor he spent a few years working in the North West of England, gaining a MSc in Trauma & Orthopaedic Surgery and memberships of both The Royal College of Surgeons of Edinburgh & The Royal College of Physicians & Surgeons of Glasgow. 

Having completed basic surgical training in the UK he emigrated to New Zealand and completed his specialist orthopaedic training with the New Zealand Orthopaedic Association, gaining Fellowship of the Royal Australasian College of Surgeons in 2015.  He then completed further sub-specialty training in Hip and Knee primary & revision arthroplasty & soft tissue surgery at Wrightington Hospital, England (where Professor Sir John Charnley, who pioneered hip replacement surgery worked). 

He has also completed travelling fellowships to Ganga Hospital, India and the prestigious Helios ENDO-Klinik, Hamburg, Germany.

Services.

Hip Joint Replacement

Hip joint replacement has revolutionised the treatment of hip arthritis and can reliably relieve pain and restore function for patients, which can be life-changing.  A total hip joint replacement consists of a metal cup with a hard-wearing plastic liner (to replace the “socket”), and a metal stem that is inserted into the top of the femur (thigh bone) with either a ceramic or metal head (to replace the “ball” part of the hip).

Hip arthritis is where cartilage in the hip joint wears down or is damaged, leaving the bone surfaces of the joint to grind together and become rough. This causes pain and stiffness, making it difficult to move the leg.

There are a number of different forms of hip arthritis, but they all involve a loss of cartilage in the hip joint and that eventually leads to bone rubbing on bone and destruction of the joint.

In people with hip osteoarthritis, walking and other motion that stresses the diseased hip cartilage usually increases pain and reduce a person’s ability to be active.  At the same time, reduced activity can weaken the muscles that control the hip joint, which may make it even more difficult to perform daily activities.

Because of the loss of the gliding surfaces of the bone, people with arthritis may feel as though their hip is stiff and their motion is reduced.  Sometimes people actually feel a sense of catching, snapping or clicking within the hip.

The pain is usually felt in the groin, but also may be felt on the side of the hip, the buttock and occasionally down into the knee.  Activities such as walking long distances, standing for long periods of time or climbing stairs puts stress on the hip that generally makes arthritis pain worse.

Knee Joint Replacement

Knee replacement is where portions of the bones that form the knee joint are removed and replaced with artificial implants.

It is performed primarily to relieve knee pain and stiffness caused by osteoarthritis.  Knee replacement is one of the most successful orthopaedic operations performed today.

Knee osteoarthritis causes pain, stiffness, instability and a change in leg alignment.

Most people with advanced knee arthritis, in which the knee cartilage is worn away and the surface of the knee becomes pitted, eroded, and uneven will benefit from knee joint replacement.

Following knee joint replacement, most patients experience reduced or eliminated knee pain, increased ability to move and an overall improvement in their quality of life.

Revision Hip Joint Replacement Surgery

Modern joint replacements are expected to last 15 to 20 years in 85% to 90% of patients. However, like anything mechanical, the implants do not last forever. 

The most common reasons for revision surgery are repetitive (recurrent) dislocation, mechanical failure (implant wear and tear – loosening or breakage) and infection. 

A revision of a hip replacement is generally more challenging than the initial operation.  It should not be regarded as or compared to “changing the tires on a car.”  The results of surgery and the durability of the revised hip replacement are less predictable than those of the primary operation.  With every revision surgery, there is some loss of muscular mass, bone, or both.  The duration of surgery is generally longer and the likelihood of complications higher than during the primary surgery.

During revision surgery, Mr Thompson may need to remove or exchange one or more parts of the hip replacement.  The parts that are not attached to the bone can be safely exchanged with minimal to no removal of the patient’s bone.

However, if the implants in contact with the bone need to be changed, some bone loss generally occurs.  In addition, some of the musculature around the hip will be lost, thus affecting the strength of the hip and the patient’s function after surgery.  The results of revision surgery are not as predictable as those of the primary surgery.

Revision Knee Joint Replacement Surgery

A knee revision is the replacement of prosthetic implants in a person who previously had a total knee replacement.  In this operation, the original prosthesis is removed and a new prosthesis put in place.

A knee revision may be necessary for anyone whose prosthetic knee implant fails due to injury or wear, or who gets an infection in the area around implant.  In elderly people who have a knee replacement, the artificial knee implants may last for life.  But in younger patients, especially those who maintain an active lifestyle, knee prostheses may eventually fail, requiring a second replacement later in life.

Some knee revisions may require the replacement of only one implant, while others require a complete exchange of all the prostheses that were implanted during the original knee replacement surgery (known as “revision total knee replacement”).  A complete revision of this type is a complex procedure that requires extensive preoperative planning, specialized implants and tools, prolonged operating times, and mastery of difficult surgical techniques.

Carpal Tunnel Surgery

Carpal tunnel syndrome (CTS) causes pins & needles in the hand, it often occurs at night and certain occupations can pre-dispose you to developing CTS – which may make you eligible for ACC cover.  Typically it affects the sensation to the thumb, index, middle, and half of the ring finger (excluding the pinky), it can also cause wasting of muscles that control thumb motion. 

Surgical treatment of this condition is a reliable method of preventing the progression of the disease and usually relives the symptoms soon after decompression of the nerve.

With surgical release of the transverse carpal ligament, most patients have significant relief of pain, numbness, and tingling.  As long as treatment is administered early enough to preserve nerve function, the most obvious improvement in the patient is pain relief – particularly night-time symptoms.

Surgery involves releasing the transverse carpal ligament (the roof of the carpal tunnel) to allow more room for the median nerve.  It is a same-day procedure requiring local anaesthesia with and a small incision, usually taking 8-10 minutes to complete.  Recovery time for surgery depends on your occupation – desk-jobs may be 1-2 weeks whilst more physical occupations can take 6 weeks or more to return to.

Dupuytren’s Surgery

This is a progressive disease of the hand that causes the fingers to close in, leaving the patient unable to straighten them.  In Dupuytren’s, connective tissue in the palm of the hand becomes thickened from an overgrowth of collagen. 

This causes the tissue to tighten, forcing the fingers to flex in.  The condition progresses slowly and usually without pain, but it can prevent a person from performing some tasks or skills.

The cause of Dupuytren’s is unknown, but evidence shows that it may run in families.  Risk factors include diabetes and people with Northern European heritage have a higher risk of getting Dupuytren’s.  Men develop Dupuytren’s more often than women, and most of these patients notice symptoms after age 50.  There is no cure, but there are effective treatments.  Many patients have the full function of their hand restored.

Needle aponeurotomy is a daycase treatment, which the patient receives an injection of local anaesthetic in the area with the Dupuytren’s cord.  Mr Thompson then takes a small needle and perforates the cord so it can snap, allowing the fingers to straighten.

More advanced disease requires more invasive surgery to excise the diseased tissue.  This is also a daycase procedure but requires a general anaesthetic.

Mr Thompson will gauge whether a patient should be treated with needle aponeurotomy or more formal surgery based on how serious the Dupuytren’s contracture is.

Platelet Rich Plasma

Platelet Rich Plasma (PRP) is a concentration of a patient’s own platelets which are a cell found in your bloodstream. 

PRP is used to accelerate the healing of injured tendons, ligaments, muscles and joints.  They enable an individual patient’s own healing system to improve musculoskeletal problems.

Platelets and the liquid plasma portion of the blood contain many factors that are essential for cell recruitment, multiplication and specialisation that are required for healing.  This is something that can be done at Mr Thompson’s rooms and takes around 20 minutes.

A blood sample is obtained from the patient and the blood is then put into a centrifuge that separates the blood into its many components.  PRP can then be collected and injected to the injured area.

Please ask if you are interested in this treatment and Mr Thompson can discuss if it is suitable for your condition.

FAQ.

Yes. A letter from either your general practitioner, physiotherapist, sports doctor, specialist or other medical practitioner is required before you are consulted with.

Please advise us of where and when any X-rays were done – imaging can often be transferred to our system as long as we know where it was performed.  Imaging performed at Pacific Radiology or Broadway Radiology can be viewed without transfer.

Bring any clinical notes related to your injury or condition along with information about any regular medication you take.  If you have an ACC claim number or medical insurance then please bring these details with you.

No.  As long as your claim has been approved, ACC will cover the total cost of the initial appointments.  However, if surgery is required a separate application for funding is sent to ACC – these can take up to two months to be processed.

Yes, you are welcome to self-fund, we can provide you with a quote for your approval prior to surgery so you are aware of the costs in advance.

If you think your injury needs assessing urgently, you are best to go to Whanganui Hospital.  We do not offer an acute patient service.

Due to the high demand for specialist appointments it is not uncommon to have to wait for an initial appointment.

Get in touch.

For appointments, contact us on (06) 242 4000 or fill in the form below.

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