BJR
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
British Journal of Radiology (1992) 65, 271-273
© 1992 British Institute of Radiology
doi: 10.1259/0007-1285-65-771-271
This Article
Right arrow Full Text (PDF)
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Jones, A. C.
Right arrow Articles by Doherty, M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Jones, A. C.
Right arrow Articles by Doherty, M.

An unusual osteochondral body in association with calcium pyrophosphate dihydrate crystal deposition disease

A. C. Jones, BSc, MRCP B. J. Preston, FRCR * and M. Doherty, MA, MD, MRCP

Rheumatology Unit, City Hospital, Nottingham NG5 1PB * Department of Radiology, University Hospital, Nottingham, Clifton Boulevard, Nottingham NG7 2UH

This excerpt was created in the absence of an abstract.

Chronic pyrophosphate arthropathy is a recognized subset of osteoarthritis (OA) characterized by deposition of calcium pyrophosphate dihydrate (CPPD) crystals (McCarty, 1976). Typically a disease of the elderly, there is symptomatic and radiographic involvement of characteristic sites, including the patellofemoral, radiocarpal and glenohumeral joints (McCarty & Haskin, 1963; Resnick & Resnick, 1983). CPPD deposition in cartilage (chondrocalcinosis) occurs particularly in the articular and the meniscal cartilages of the knee, the symphysis pubis and the triangular ligament of the wrist (McCarty & Haskin, 1963; Resnick & Resnick, 1983). It has been postulated that sporadic pyrophosphate arthropathy may represent a hypertrophic response to joint insult (Doherty et al, 1984), with CPPD crystal formation being a marker of high extra-cellular pyrophosphate production reflecting increased cellular biosynthetic activity (Caswell et al, 1983).

Osteochondral bodies, arising in synovium by enchondral ossification of islands of chondroid metaplasia, are a common accompaniment to OA and may be particularly florid in the subset of pyrophosphate arthropathy (McCarty & Haskin, 1963; Resnick & Resnick, 1983). Such bodies form by a process of layered growth (Milgram, 1977b), and possibly reflect a generalized hyperplastic response (i.e. attempted repair) by joint tissues. We present a patient with CPPD arthropathy who developed an osteochondral body that showed features both of ossification and chondrocalcinosis.

Key Words: Osteochondral body • Chondrocalcinosis • Knee • Pyrophosphate arthropathy

Received for publication June 19, 1991. Accepted for publication July 23, 1991.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
BJR DMFR IMAGING  ALL BIR JOURNALS 
Copyright © 1992 by the British Institute of Radiology.