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In 2011, Epstein and Hood documented that 17.2% of 274 patients with cervical/lumbar complaints seen in first or second opinion over one year were told they needed "unnecessary" spine surgery (e.g., defined as for pain alone, without neurological deficits, or significant radiographic abnormalities). Subsequently, in 2012 Gamache found that 69 (44.5%) of the 155 second opinion patients seen over a 14-month period were told by outside spine surgeons that they needed surgery; the second opinion surgeon (Gamache) found those operations to be unnecessary. Increasingly, patients, spine surgeons, hospitals, and insurance carriers should not only be questioning whether spinal operations are "unnecessary", but also whether they are "wrong" (e.g., overly extensive, anterior vs. posterior operations), or "right" (appropriate).

Are recommended spine operations either unnecessary or too complex? Evidence from second opinions