Osseon Therapeutics appointed Ron Clough as chief operating officer.
Sheryl Conley was named chief executive officer of OrthoWorx.
TranS1 named Stephanie M. Fitts, PhD, vice president of regulatory, quality and compliance.
Adrian Hennah stepped down as CFO of Smith & Nephew.
InVivo Therapeutics Holdings, a developer of technologies for spinal cord injuries and neurotrauma, appointed Brian Hess as interim chief science officer.
Scott Hoffinger, MD, formerly the director of orthopedic surgery for Oakland (Calif.) Children's Hospital, joined CastCoverZ! in an advisory role.
Kevin A. Lobo was named president and chief executive officer of Styker.
Jeffrey Lotz, PhD, was named to the NewVert's clinical advisory board for its Octopus Spinal Annular Repair System.
Paradigm Spine, a provider of non-fusion spinal implant and medical device technologies, named Hallett Mathews, MD, MBA, executive vice president and chief medical officer.
Integra LifeSciences named John Mooradian senior vice president of global operations and supply chain and Joseph Vinhais senior vice president of global quality assurance.
Alphatec Holdings appointed Thomas McLeer senior vice president of U.S. commercial operations.
Amedica named Eric Olson, the company's president and CEO, to its board of directors.