The purpose of this prospective study is to obtain both short and long-term clinical outcomes data on the Zimmer TM Glenoid by analysis of standard scoring systems and radiographic analysis. The TM Glenoid Component is intended to function within Zimmer, Inc.'s Bigliani/Flatow (B/F) Complete Shoulder Solution. The device is a monoblock glenoid component comprised of a Trabecular Metal base, and is designed to interface and articulate with Zimmer, Inc.'s B/F humeral components. The Trabecular Metal Glenoid is designed with an articular surface that is manufactured from ultra-high molecular weight polyethylene (UHMWPE). The base of the implant has a cruciate TM keel that provides stability and initial fixation using a press-fit between the implant and the bone. Long-term fixation is provided by biological ingrowth into the TM material. Surgical fixation of the trabecular metal device will be obtained via press-fit. Surgical fixation of the comparison all-polyethylene glenoid component will be with Palacos/CoPal bone cement