The Journal of Bone and Joint Surgery, Vol 61, Issue 2 201-207, Copyright © 1979 by Journal of Bone and Joint Surgery, Inc
Failed lumbar disc surgery and repeat surgery following industrial injuries
G Waddell, EG Kummel, WN Lotto, JD Graham, H Hall and JA McCulloch
One hundred and seventy-nine of the compensation patients in this study who
had one low-back operation had to have repeat back surgery. One hundred and
three Workmen's Compensation Board patients who were reoperated on by a
number of surgeons in the Toronto area were independently reviewed with one
to two years of follow-up. Many had residual back pain, limited lumbar
movement, presisting nerve-root deficits, and psychological disturbances.
Forty per cent of the second operations were successful. Subsequent
operations yielded progressively poorer results and made more patients
worse than better. Operations were frequently undertaken without clear
indications or evidence of correctable organic lesions. The results of
repeat operations were better when the preceding operation had given more
than six months' relief, when sciatica overshadowed back pain, and when a
definite recurrent disc herniation was found. Scarring and neurolysis,
previous infection, repair of a pseudarthrosis, and adverse psychological
factors precluded a good result. Careful patient selection based on total
evaluation of the disability including psychological assessment, accurate
localization of the lesion by detailed investigation, and, most important,
a logical sequence of decisions based on clear, objective criteria are
prerequisites for this complex and demanding surgery. Caution and restraint
are required when contemplating repeat back surgery.