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TRAPEZIECTOMY WITH INTERPOSITION ARTHROPLASTY

Method
Removal of the trapezium with tendon interposition
Duration
60 to 90 minutes
Recovery time
6 to 12 weeks

Trapeziectomy with interposition arthroplasty is a surgical procedure for treating osteoarthritis of the base of the thumb (the carpometacarpal joint). The diseased trapezium is removed and replaced by a tendon interposition, in order to relieve pain and preserve movement.

This operation is used with advanced osteoarthritis of the thumb base when conservative measures are no longer sufficient. The tendon interposition prevents the bones from rubbing directly against each other and creates a pain-free range of movement.

What is a trapeziectomy with interposition arthroplasty?

How the operation proceeds

  • Incision over the base of the thumb
  • Exposure and removal of the diseased trapezium
  • Taking a tendon (usually the FCR tendon) for the interposition
  • Placing the tendon as a cushion between the joint surfaces
  • Stabilisation by reconstructing the ligament
  • Closure of the wound and application of a plaster cast

Rehabilitation after a trapeziectomy with interposition arthroplasty

Rehabilitation after a trapeziectomy with interposition arthroplasty proceeds step by step and aims to restore movement and build up strength.

Phase I (0-4 weeks): immobilisation and wound healing
  • Plaster cast for 2-3 weeks
  • Elevation to reduce swelling
  • Wound check and removal of sutures
  • Avoiding loading
Phase II (4-8 weeks): mobilisation
  • Removal of the plaster cast
  • Beginning mobilisation exercises
  • Physiotherapy to improve movement
  • Gentle strengthening exercises
Phase III (from week 8): building up strength and everyday life
  • Increasing the strengthening exercises
  • Taking up everyday activities again
  • Fine motor training
  • Work according to what it demands