Wear testing shows
that PyroCarbon-on-bone
articulation wear is
significantly less than
that of medical grade
metals and ceramics.

The elastic modulus
of PyroCarbon closely
matches that of cortical bone.

interpositional

design

• maintains thumb height
• preserves trapezium
• minimal bone removal
• bone-friendly material
• open pathway for revision

PyroCarbon

advanced material

• Thumb carpometacarpal joint arthroplasty with the
  Ascension PyroCarbon biarticular disk re-establishes proper alignment of the thumb. In preserving trapezial bone stock, chances of thumb shortening, weakness and resultant intercarpal instability are minimized.
• Charles Hamlin, MD
  Clinical Results1:
  Study Population
• 47 patients underwent CMC arthroplasty with
  Ascension PyroDisk
• Average follow-up of 24 months
  Results Show
• High Pain Relief: preoperative average 8.4,
  postoperative average 1.1 (VAS)
• High Patient Satisfaction: 100% of patients
  satisfied with results, 72% highly satisfied
• Increased Key Pinch Strength: preoperative
  average 9.8 lbs, postoperative average 12.3 lbs
• High Function Score: high Kapandji score with daily living activities

Histological examination after 7 mos.

of articulation with PyroCarbon PHS

showed a layer of healthy fibrous

pseudocartilage. Sample had no evidence
of particulate synovitis.

Ascension® PyroDisk®