Hand & Wrist

Trapeziectomy / CMC Arthritis

The trapezium is a small wrist bone that lies at the base of your thumb. With age, activity, previous injury/trauma and underlying conditions, this bone can eventually wear.

About Trapeziectomy / CMC Arthritis

Also known as Thumb CMC Joint Arthritis, Trapeziectomy / CMC Arthritis is commonly diagnosed as arthritis.

Signs & Symptoms

Trapezium arthritis occurs when the bone is worn. It progressively leads to increasing pain, weakness in grip, stiffness and eventually it may cause deformity at the base of the thumb. 

As the disease progresses, such difficulties as opening a jar/strong gripping activities or even daily tasks can become increasingly difficult, as the pain intensifies.

Treatment Options

Risks & Concerns

The associated risks of surgery include;

  • Infection
  • Scar
  • Pain
  • Stiffness
  • Swelling
  • Complex Regional Pain Syndrome
  • Need for further surgery
  • Failure to relieve symptoms
  • Worsening pain
  • Bleeding
  • Neurovascular deficit or injury
  • Risk of anaesthetic
  • Recurrence

If you experience any problems or have any concerns following your surgery, please do not hesitate to contact the office. A/Prof Lawson-Smith’s staff with ensure that A/Prof Matthew Lawson-Smith is kept informed of what is occurring and will advise you the best course of action.

If you are unable to reach the office, please do not hesitate to contact your GP or if it is an emergency, please present to your nearest Emergency Department.

Make an appointment

Call 08 6332 6325 or contact us to book an appointment.
You’ll need a referral from your GP.


A/Prof Matthew Lawson-Smith

A fully qualified, internationally and  locally trained upper limb surgeon, specialising in hand, wrist, elbow and shoulder surgery. A/Prof Matthew Lawson-Smith has a special interest in hand and wrist conditions, including trauma and Workers Compensation cases.

Perth orthopaedic surgeon Mr Matthew Lawson Smith, profile photo