Transhumeral Amputation

General Principles

Ideally 4cm proximal to elbow joint

  • This amount of length allows for an elbow lock mechanism prostheses to be fit
  • This stabilises the joint in the any position from full extension to full flexion to allow for better function

At or above pec major leads to no rotation

  • Becomes essentially a shoulder disarticulation
  • Maintains humeral head though which maintains shoulder contour — more cosmetically pleasing

Technique Considerations

Supracondylar Area

  • Equal anterior & posterior flaps each of length that is half the diameter of arm at that level
  • Doubly ligate & divide brachial artery just proximal to level
  • Transect median/ulnar/radial nerves higher so ends retract well proximal to end of stump
  • Divide anterior muscles approx 1.3cm distal to level so retract to level
  • Free triceps from olecranon preserving it as a long flap
  • Incise periosteum circumferentially at least 4cm proximal to joint
  • Divide bone & round ends with rasp
  • Bring triceps over bone end & suture tendon to fascia over anterior muscles
  • Insert drain deep to fascia, close skin with interrupted nonabsorbable sutures

Proximal to Supracondylar Area

  • As per supracondylar area but divide triceps 3.8-5cm distal to level, again suture to anterior fascia

Author Contributions

Page written by Dr James Drummond