• Krista J Howard, Tom G Mayer, Brian R Theodore, and Robert J Gatchel.
• Productive Rehabilitation Institute of Dallas for Ergonomics (PRIDE), Research Foundation, Dallas, TX, USA.
• Arch Phys Med Rehabil. 2009 May 1;90(5):778-85.

ObjectiveTo identify the risk factors for noncompletion of a functional restoration program for patients with chronic disabling occupational musculoskeletal disorders.DesignProspective cohort study.SettingConsecutive patients undergoing functional restoration treatment in a regional rehabilitation referral center.ParticipantsA sample of 3052 consecutive patients, classified as either completers (n=2367) or noncompleters (n=685), who entered a functional restoration program.InterventionsNot applicable.Main Outcome MeasuresThe measures used included medical evaluations, demographic data, Diagnostic and Statistical Manual of Mental Disorders psychiatric diagnoses, the Minnesota Multiphasic Personality Inventory, and validated questionnaires evaluating pain, depression, and occupational factors.ResultsThe findings revealed that patients who did not complete the program had a longer duration of total disability between injury and admission to treatment (completers=20mo vs noncompleters=13mo; P<.001). Furthermore, patients who were opioid-dependent were 1.5 times more likely to drop out of rehabilitation, and patients diagnosed with a socially problematic Cluster B Personality Disorder were 1.6 times more likely to drop out.ConclusionsAlthough some risk factors associated with program noncompletion may be addressed in treatment, socially maladaptive personality disorders, long-neglected disability, and chronic opioid dependence are the major barriers to successful treatment completion. The patients identified with personality disorders may display resistance to treatment and may be difficult for the treatment staff to deal with. Early recognition of these treatment-resistant personality characteristics in the functional restoration process may assist the treatment team in developing more effective strategies to help this dysfunctional group.

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