Design

  • Replaces Damaged Bearing Surfaces
  • Stemless Implant = Less Invasive
  • Limited Disruption of Soft Tissues

The design philosophy behind all Ensemble devices is to minimize bone-on-bone contact using implants with stemless designs that match the natural anatomy of the joint and preserve critical stabilizing soft tissues. Proprietary Ensemble devices achieve stability through the shape of the implant, including the peripheral protrusions that act to keep the implant centered in the joint space.

Interpositional design rationale

Bettinger PC, Linscheid RL, Berger RA, Cooney WP, An K-N. An anatomic study of the stabilizing ligaments of the trapezium and trapeziometacarpal joint. J Hand Surg Am. 1999 Jul; 24(4): 786-798. PMID: 10447171

Ladd AL, Weiss A-PC, Crisco JJ, Hagert E, Moriatis Wolf J, Glickel SZ, Yao J. The thumb carpometacarpal joint: anatomy, hormones, and biomechanics. Instr Course Lect. 2013; 62: 165-179. PMID: 23395023

Lin JD, Karl JW, Strauch RJ. Trapeziometacarpal joint stability: the evolving importance of the dorsal ligaments. Clin Orthop Relat Res. 2014 Apr; 472(4): 1138-1145. PMID: 23456188