CV joint premature wear in 91 Integra
 

Need suggestions as to why the CV joints in my 91 Integra have both worn out
so quickly.
Had the right side replaced in Sept'05 at 111,500 miles.
Had the left side replaced in Oct'06 at 121,800 miles.
Had BOTH sides replaced Yesterday at 122,800 miles.
The left side was particularly noisy, and you see it wore out in [just over]
1,000 miles !
Is this a problem of the garage using poor quality replacement parts, or is
there something else wrong that is casuing the CV joints to wear out so
fast??

thnx
pb