Designed to Perform

Ulnar impaction syndrome is defined as the painful compression of the ulnocarpal compartment due to a pathological positive ulnar variance. Ulnar shortening osteotomy is an established procedure to treat this indication. The APTUS Ulna Shortening System 2.5 provides an angular stable plate and guided, rotation-proof compression. 

2.5 TriLock Ulna Shortening Plate


  • Rotation-proof and guided compression

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  • Recess on the plate allows for osteotomy with fixed plate

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  • Finely adjustable saw guide for precise and parallel osteotomies



2.5 Cortical Screws,
HexaDrive 7

2.5 TriLock Screws,
HexaDrive 7

Designed to Simplify

  • Finely adjustable saw guide (2-8 mm) for precise and parallel osteotomies
  • Guided, rotation-proof compression of the osteotomy gap by means of the spindle

Technological Milestones in Osteosynthesis


Multidirectional and angular stable locking, screws can pivot freely by ± 15° in all directions


TriLockPLUS screw holes offer the advantage of locking and compression in one step


Simplified screw pick-up thanks to self-holding system

Designed to Organize

Customized system arrangement and modular concept.

  • Compact system
  • Easy to use 
  • Lightweight components 
  • Validated cleaning and sterilization of the implants


Explore Various Perspectives

Ulna Shortening System 2.5 – 3D Animation

APTUS Wrist Ulna Shortening System 2.5 Surgical Technique

Key Publications

  • Ulnar shortening osteotomy as a treatment of symptomatic ulnar impaction syndrome after malunited distal radius fractures.

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