© 1976 British Society for Rheumatology
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INCIDENCE OF JOINT INVOLVEMENT IN EARLY RHEUMATOID ARTHRITIS

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Department of Rheumatology, The Middlesex Hospital London
Department of Rheumatology Research, Middlesex Hospital Medical School London
Correspondence to:
Requests for reprints to Dr. Mary Corbett.
The frequency of joint involvement is described in 102 patients seen within one year of onset of rheumatoid arthritis. The joints most commonly affected were metacarpophalangeal, proximal interphalangeal and wrists, followed by metatarsophalangeal and shoulders. The least commonly affected were the hips and spine.
Temporomandibular and cervical spine involvement often occurred even in these early stages. Where there was unilateral involvement often corresponding joints there was a marked tendency for one side of the body to be more often affected. The arthritis was predominantly peripheral. There was a marked gradation of frequency in the small joints of the hands.
The patients were followed prospectively for a mean 4.5 years and outcome assessed. An eventually more severe disease was associated with early wrist and metatarsophalangeal joint involvement.
*Senior Registrar, Northwick Park Hospital, Harrow, Middlesex. Appointment from February 1976: Honorary Physician (Rheumatology) Prince Henry and Prince of wales Hospital, Sydney, N.S.W., Australia.
Specialist in Community Medicine (Information and Planning), Brent and Harrow Area Health Authority.
Consultant Rheumatologist, The Middlesex Hospital, London W.I.