Performance of Total Shoulder Arthroplasty

As with any mechanical system, time in service also affects the continued effectiveness of the procedure. For one group of studies, a range of 90 to 95% success rate was reported for short-term results (up to 5 years) and a much lower 55 to 88% success rate was reported for results up to and longer than 10 years (Mackay, Hudson, and Williams 2001). Survivorship analyses for TSAs also show fhis expected drop-off with time implanted (Torchia, Cofield, and 

In spite of these good results, there are complications that adversely affect the performance of TSRs. Table 9.1 lists complications seen in TSA in the order of their prevalence (Noble and Bell 1995, Wirth and Rockwood, Jr. 1996). One or more of these complications can cause failme of TSA, leading to revision. Revision rates range from 0 to 11% in reported TSA series (Edwards et al. 2002, Neer, n, Watson, and Stanton 1982, Sanchez-Sotelo et al. 2001, Snyder 1996, Sojbjerg et al. 1999, Trail and Nuttall 2002). 

Complications with Total Shoulder Arthroplasty Ranked According to Prevalence 

Plots of data showing ASTM FI877-98 quantitative description characteristics of retrieved UHMWPE particles from TSA, TKA, and THA. Data from Mabrey et al. (2002) is noted with a double asterisk ( ) and data from Wirth et al. (1999) is noted with a single asterisk ( ). The boxes in each plot enclose the data values of the mean the standard error in the mean reported for each implant type. 

The equivalent circle diameter (the diameter, in microns, of the circle with the same area as the projected area of a particle) is plotted in (A). 

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