Replicating proximal humeral articular geometry with a third-generation implant: A radiographic study in cadaveric shoulders

Michael A. Wirth, Jeff Ondrla, Carleton Southworth, Ken Kaar, Brett C. Anderson, Charles A. Rockwood

Research output: Contribution to journalArticle

30 Scopus citations


Prosthetic shoulder arthroplasty must replicate humeral geometry or risk compromising success. The purpose of our study was to evaluate humeral head replacement with respect to replicating proximal humeral anatomy. Using scanning technology and AutoCAD, this study was conducted in 2 parts. First, geometric parameters were measured on 35 cadaveric humeri and were used to design a new shoulder arthroplasty system. Second, humeral head replacement was performed on 18 of these humeri by use of the new shoulder arthroplasty system, and selected preoperative and postoperative measurements were compared. Preoperative to postoperative differences were minimal and exhibited improvement compared with earlier designs. In this study, humeral head replacement with a third-generation system reproduced the original anatomy of 18 cadaveric humeri more accurately than previously reported. This finding is important because accurate anatomic reconstruction in shoulders is essential for minimizing subacromial contact and optimizing range of motion.

Original languageEnglish (US)
Pages (from-to)S111-S116
JournalJournal of Shoulder and Elbow Surgery
Issue number3 SUPPL.
Publication statusPublished - May 1 2007


ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

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