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One hundred patients, referred for the management of intractable pain, completed a 52-item Illness Behaviour Questionnaire (IBQ). Responses were scored on 7 scales: general hypochondriasis, disease conviction, psychological versus somatic perception of illness, affective inhibition, affective disturbance, denial and irritability. IBQ scale profiles were used to study the relationship between chronicity of pain and pattern of illness behaviour reported. Except in the case of one scale, no significant correlation emerged. This overall lack of association between chronicity and illness behaviour remained even when the patient sample was restricted to those 20 patients having substantial organic pathology associated with their pain. These findings suggest that degree of chronicity is unlikely to play a major role in determining the illness behaviour manifested by patients with intractable pain.

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The study demonstrated that five weekly intra-articular injections of sodium hyaluronate (Hyalgan) were superior to placebo and well tolerated in patients with osteoarthritis of the knee with a symptomatic benefit which persisted for 6 months.

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