'Dialysis Related Arthropathy': a Survey of 95 Patients Receiving Chronic Haemodialysis with Special Reference to 132 Microglobulin Related Amyloidosis
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Ann Rheum Dis: first published as 10.1136/ard.48.5.409 on 1 May 1989. Downloaded from Annals of the Rheumatic Diseases, 1989; 48, 409-420 'Dialysis related arthropathy': a survey of 95 patients receiving chronic haemodialysis with special reference to 132 microglobulin related amyloidosis N P HURST,' R VAN DEN BERG,' A DISNEY,2 M ALCOCK,3 L ALBERTYN,3 M GREEN,' AND V PASCOE4 From the 'Rheumatology Unit, the 2Renal Unit, the 3Department of Radiology, and the 4Department of Pathology, The Queen Elizabeth Hospital, Woodville, South Australia SUMMARY Ninety five patients receiving chronic haemodialysis (CHD) were surveyed to determine the prevalence of rheumatic disease and, where possible, its aetiology. At least three distinct rheumatic syndromes were identified-a group of patients with a syndrome consisting of large and medium joint synovial swelling, restricted hips and shoulders, tenosynovitis, carpal tunnel syndrome, and bone cysts due to deposition of 132 microglobulin related amyloid (AMP2m); a second group with erosive azotaemic osteoarthropathy; and a third group with age related degenerative disease of small, large, and axial joints. The data presented suggest that in patients receiving CHD (a) the prevalence of AM2i2m deposition and the associated syndrome increases with duration of dialysis, but in patients who have been dialysed for more than 10 years the risk of developing AM2n2m is related to age; (b) AM2i2m deposition in subchondral cysts, but not synovium, causes joint destruction; also, AMp2m may be more prone to deposition in synovium of joints already damaged by other processes; (c) in the absence of synovial iron deposition synovial AM2n2m is not associated with an inflammatory infiltrate; (d) hyperparathyroidism and perhaps other factors such as synovial iron deposition are probably more important than AMgi2m as causes http://ard.bmj.com/ of peripheral joint degeneration and destructive spondyloarthropathy in patients receiving CHD. A number of skeletal and articular abnormalities usually small and perivascular.26 27 A similar trop- have been described in patients undergoing chronic ism for synovial tissue has been described previously haemodialysis (CHD). These include renal for AL-type amyloid,28 but AA-type amyloid osteodystrophy, avascular necrosis of bone, crystal usually spares synovium and bone. A minor degree induced arthritis, periarticular calcification,'-3 and of synovial amyloidosis occurs with increasing age.29 on October 3, 2021 by guest. Protected copyright. recurrent haemarthrosis of shoulders.2 3 A syn- Some bone deposits of AM02m have been re- drome, comprising carpal tunnel syndrome sponsible for fractures,30 31 and it has been sug- (CTS),8 chronic large joint arthropathy,3 9 and gested that AM02m is responsible for the erosive bone cysts,'0 has also been recognised as a major arthropathyll 13 21 23 and spondyloarthropathy25 complication of CHD. Recent studies have demons- which may occur in patients undergoing CHD. It is trated the deposition of amyloid in the carpal not certain, however, whether amyloid alone or tunnel, bone cysts, synovium, and tendons of such other factors such as synovial iron deposition patients.8 1(}4 The major component of the amyloid contribute to the large and medium joint arthro- has been identified as 12 microglobulin,'52 but pathy associated with this syndrome.3 32 amyloid P component is also present.2' A suggested The present study was undertaken to assess the designation is 'AM02m'. 19 AM2i2m has also been prevalence of rheumatic disease and, where poss- identified in synovial fluid24 and vertebral discs.25 ible, its relation with tissue deposition of AM2n2m or AMt12m deposits have been infrequently described in other factors in a defined population of patients other major organs'2 23 and, where present, are receiving CHD. Patients and methods Accepted for publication 27 July 1988. Correspondence to Dr N P Hurst, Rheumatology Unit. The Queen Elizabeth Hospital, Woodville, South Australia 5011. The patient population consisted of all 118 patients 409 Ann Rheum Dis: first published as 10.1136/ard.48.5.409 on 1 May 1989. Downloaded from 410 Hurst, van den Berg, Disney, Alcock, Albertyn, Green, Pascoe receiving CHD under the care of the Queen within 18 months of the study and most within 12 Elizabeth Hospital renal unit during a defined nine months. The remaining patients had either declined month period (May 1986-January 1987). Of these, to undergo bone biopsy or the available biopsy had 23 patients were excluded from the study: seven had been performed more than 18 months previously. received renal transplants, two died before being Other histological specimens were available from 12 reviewed, and a further 14 patients who were patients and synovial fluid from a further seven dialysed at remote regional centres (>250 miles) patients. These were examined for the presence of were not seen for logistic reasons. Ninety five amyloid by Congo red staining. Where Congophilia patients (40 female, 55 male) were available for was identified the presence Of P2 microglobulin was review. sought using rabbit antihuman 12 microglobulin All patients were reviewed for symptoms of antibody and the peroxidase-antiperoxidase tech- musculoskeletal disease or symptoms related to nique (Dakopatt). Tissues containing either AA or systemic amyloidosis using a structured question- AL-type amyloid were used as negative controls for naire and then underwent a complete physical immunoperoxidase studies. Deposition of iron in examination performed by one of two rheumatolog- tissues was sought using Perls' stain. Synovial fluid ists (NH, R van den B). The presence of joint was centrifuged and the sediment examined for the 'restriction' was defined as loss of 30% or more of presence of crystals by polarising microscopy, or the normal range of movement and 'synovitis' as the deposits of AM2n2m using the immunoperoxidase presence of palpable synovial thickening or clinically technique followed by Congo red.24 detectable effusion, or both. CTS was or had been diagnosed on the basis of a typical clinical history, Results physical findings, and nerve conduction studies. In all cases details of dialysis, cause of renal failure, PATIENTS and parathyroid status were obtained by review of Patients were divided into three cohorts according case records. to duration of haemodialysis: group A=0 to 4-9 All patients had radiographs taken of hands, years (n=49), group B=5 to 9-9 years (n=32), and wrists, shoulders, hips, knees, feet, and spine. These group C 310 years (n=14). The mean (SD) ages were reviewed by two radiologists (LA, MA) were: group A 55-8 (11-9), group B 46-8 (13-3), experienced in reporting renal bone disease. A group C 52-1 (13-2) years. of renal was causes of AA-type radiological diagnosis osteodystrophy The renal failure included http://ard.bmj.com/ made if any of the following were present: sub- amyloid in one patient and multiple myeloma in periosteal resorption, tuft resorption, distal clavicu- another. They had received dialysis for two years lar erosions, rugger jersey spine or other typical and one year respectively and neither had arthro- bony sclerosis, or coarse bony trabeculation. A pathy, bone cysts, or CTS. diagnosis of significant active hyperparathyroidism Patients had been treated mostly with cuprophane was based on finding either (a) typical radiological membrane dialysers. Reverse osmosis has been used changes and parathyroid hormone >1000 pmoIIl or for the last 10 years ensuring dialysate aluminium (b) a bone biopsy specimen showing active bone concentrations <10 iimol/l. on October 3, 2021 by guest. Protected copyright. resorption. Nodal erosive osteoarthrosis of hands was defined as loss of joint space, osteophyte CLINICAL AND RADIOLOGICAL FINDINGS formation, and erosive bone damage, usually affect- ing interphalangeal or first carpometacarpal joints. Joint symptoms Erosive azotaemic osteoarthropathy was defined as Pain and stiffness affecting peripheral and axial the presence of marginal joint erosions, usually joints were very common and the frequency rose affecting metacarpophalangeal or interphalangeal with increasing duration of dialysis (Table 1). joints, and occasionally larger joints, in the absence of joint space narrowing. Large and medium size joints The following biochemical studies were per- The frequency of joint restriction, synovitis, and formed on serum or plasma from all patients: serum effusions in large and medium size joints rose with 12 microglobulin before and after dialysis, C reac- duration of dialysis and affected over 60% of the tive protein, ferritin, serum electrophoresis, patients in group C (Tables 1 and 2). rheumatoid factor, and antinuclear factor. Parathy- Synovitis was most common in the knee (Table 2); roid hormone was measured by immunoassay for in five of these patients there was no radiological the C terminal fragment. change, in five osteoarthritis, in one a large sub- Iliac crest bone biopsy results were reviewed from chondral tibial cyst later shown to contain AM02m 68/95 patients. All biopsies had been carried out (see below), and in one loss of articular cartilage. In Ann Rheum Dis: first published as 10.1136/ard.48.5.409 on 1 May 1989. Downloaded from Dialysis related arthropathy 411 one patient with an acute painless effusion haemar- found for bleeding. Several patients had radiological throsis was found but no organisms or crystals. evidence of major rotator cuff attrition, often Restriction of knee movements