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Mrs E.B. Presenting complaint:74 year old ladyReferred to Rheumatology clinic with an unstable kneeFirst seen November 2004. Mrs E.B. History of presenting illness:Had a fall 4 months prior - slipped overFell onto right kneePain at time of injury, but settled without specific treatmentKnee feeling unstable and had given way on 2 occasions causing further fallsAs a result, had not left the house for over 3 months.
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1. An Old Lady with an Unstable Knee
Grand Rounds
April 21 2005
Dr Jane Clayton
Rheumatology Fellow
Royal Newcastle Hospital
2. Mrs E.B
Presenting complaint:
74 year old lady
Referred to Rheumatology clinic with an unstable knee
First seen November 2004
3. Mrs E.B History of presenting illness:
Had a fall 4 months prior - slipped over
Fell onto right knee
Pain at time of injury, but settled without specific treatment
Knee feeling unstable and had given way on 2 occasions causing further falls
As a result, had not left the house for over 3 months
4. Mrs E.B Past Medical History:
Orbital BCC removed 10 years previously
No cardiovascular, respiratory, gastrointestinal, endocrine or neurological complaints
Usually very well
5. Mrs E.B Social History:
Lives with husband in house in Valentine
5 adult children
Lifelong non smoker
Drinks 10-20g alcohol per week
Active in the community - sings in concerts for nursing home residents
Mobilising with stick since fall
6. Mrs E.B Medications:
Aspirin 150mg / day
Garlic tablet daily
Omega 3 fatty acid tablet daily
Vitamin B and E daily
Glucosamine daily (since fall)
No known allergies
7. Mrs E.B Examination:
Pale
BMI 22
Cardiovascular and respiratory examination unremarkable
Palpable liver edge, otherwise gastrointestinal examination normal
8. Mrs E.B Examination:
Right knee
Obvious deformity of patella
Active ROM - 30 degree loss of extension
Passive ROM - normal
No pain or effusion
9. X ray R knee Report
Bones demineralised
Patella - superior migration
Inferior pole - avulsed
Minor degenerative disease
10. Mrs E.B Progress:
Referred to Orthopaedic surgeon
Physiotherapy arranged for appropriate mobility aid and falls prevention
Occupational therapy review for home modifications
Risedronate 35mg / week prescribed
BMD and blood tests arranged
11. DEXA Scan
12. DEXA Scan
13. DEXA Scan
14. Mrs E.B - pathology EUC
Na 144
K 4.1
Cl 108
bicarb 26
urea 3.3
Creat 49
LFT
ALT 42
AST 41, otherwise LFT normal CMP
Corr Ca 2.14 (2.18 - 2.49)
PO4 1.17 (0.88 - 1.46)
FBC
Hb 96, MCV 71.8, MCH 22.1
WCC 6.1
Plt 283
15. Mrs E.B - pathology Fe studies
Ferrit 4.7 (30-260)
Iron 2 (10-27)
TIBC 80 (48-68)
T/ferrin sat 3 (15-50)
16. Mrs E.B - pathology
Urine
Calcium mmol/L 1.31
Creat 5.3
Ca:Creat 0.25 (<0.4)
17. Mrs E.B - pathology
Hormones
PTH pg/ml 191 (8-73)
PTH pmol/ml 20 (0.8-8)
18. Mrs E.B - pathology
Hormones
25-OH vit D 6 (33-107)
19. Mrs E.B Further Blood tests
EPG - normal
20. Mrs E.B
21. Mrs E.B
Transglutaminase IgA 29 (<20)
Gliadin IgA 127 (<34)
Gliadin IgG 95 (<42)
22. Mrs E.B
Further progress:
Underwent surgery to R knee 25/1/05
Open reduction internal fixation
Patellar fragments debrided and sutured together
No post op complications
Discharged in Zimmer splint
23. Mrs E.B Further progress - surgery to knee
24. Mrs E.B
Further progress:
Home modifications completed
Awaiting endoscopy, small bowel biopsy
Commenced on Caltrate 600mg /day, Vit D 50 000 units / week, FGF daily
PTH 4 months later 49, Vit D increased to 26 and calcium 2.34
25. Coeliac Disease
First described in 1888 by Samuel Gee On the Coeliac Affection, although similar descriptions date back to 2 AD
Occurs primarily in caucasians of North European ancestry
Prevalence previously documented at between 1:4000 - 1:8000, but now felt to approach 1% of the population with serological testing
26. Coeliac Disease
Triggered by gliadin - protein component of gluten
Found in wheat, barley and rye (?oats)
Characterised by an inflammatory response in the small intestine
Histologically, villous atrophy, crypt hyperplasia and a lymphocytic infiltration
Severity of the coeliac intestinal lesion does not necessarily correlate with clinical symptoms
27. Coeliac Disease
75% concordance in monozygotic twins
HLA DQ2 present in 95% of coeliac pts, HLA DQ8 in the remainder
DQ2 and DQ8 molecules confer susceptibilty by presenting specific gluten peptides to intestinal T cells
Associated with autoantibodies against gliadin and endomysial tissue - in 1997 tissue transgluaminase enzyme (TTG) found to be the autoantigen for endomysial antibody
28. Coeliac disease
29. Coeliac disease
30. Coeliac disease
31. Coeliac disease
32. Coeliac Disease
Diagnosis:
Coeliac disease is present if histologic changes are found on intestinal biopsy whilst the patient consumes a diet containing gluten and unequivocal improvement occurs while he or she consumes a gluten free diet. Alaedini and Green (2005)
33. Coeliac Disease
Clinical presentation varies greatly, asymptomatic to severe malnutrition
Common presentation
Abdominal pain
Increased frequency of bowel motions
Weight loss
Anaemia
Weakness
34. Coeliac Disease
Atypical - GI symptoms absent or mild
Short stature
Infertility
Neurological - ataxia, depression, anxiety, epilepsy, headaches
Arthritis - 26% in one series of 200 coeliac patients
Metabolic bone disease - common and can occur with no GI symptoms
35. Why does coeliac disease cause osteoporosis?
Malabsorption of calcium and vitamin D from GI tract leads to secondary hyperparathyroidism
Excess parathyroid hormone associated with bone loss
Evidence to suggest that appendicular skeletal bone loss may be greater than axial skeleton
36. Why does coeliac disease cause osteoporosis?
Selby et al (1999), J Bone Min Res
35 biopsy proven coeliac patients on GFD
Mean age 50.6
None were vitD deficient - 9 pts supplemented mean level 52.7 nmol/L
Mean corrected calcium was 2.21
Evidence of secondary hyperparathyroidism in 28% patients
37. Why does coeliac disease cause osteoporosis?
Selby et al (1999), J Bone Mineral Res
Significant negative relationship between forearm BMD and serum PTH (r=-0.48, p=0.009)
Negative relationship between BMD at forearm and Vit D concentration - weak negative relationship in lumbar spine
Forearm Z score -1.40 (p<0.0001)
Postulated that increased endogenous faecal calcium loss is major stimulus to 2o PTH
38. Do coeliac patients have an increased fracture risk?
West et al (2003), Gut
Case control study
4732 patients with coeliac disease and 23,620 age matched controls
Calculated hazard ratios for any fracture, radius or ulna fracture or hip fracture
39. Do coeliac patients have an increased fracture risk?
West et al (2003), Gut
Mean age at diagnosis was 44 years
Rate of any fracture 137.9/10,000 in coeliac population, 105.9/10,000 in control
Therefore, 30% increase in fractures
Hazard ratio for hip 1.90
Hazard ratio for radius or ulna 1.77
Overall risk 3.19 fractures per 100 person years
40. Does a gluten free diet increase BMD?
Kemppainen et al (1999), Bone
26 patients with newly diagnosed coeliac disease (biopsy proven)
Followed for 5 years after commencing GFD
BMD increased 2% at lumbar spine, femoral neck 1% trochanter 6% and 3% at Wards triangle
All increases occurred during first year of diet
Did not measure appendicular skeleton
41. Does a gluten free diet increase BMD?
Mora et al (1999), Am J Gastroenterology
30 coeliac patients, mean age at diagnosis 11.4 years old
On gluten free diet for a mean of 10.7 years
240 controls
Measured lumbar spine and whole body BMD
BMD of coeliac patients did not differ from controls
42. Should osteoporotic patients be screened for coeliac Dx?
Stenson et al (2005), Arch Int Med
266 patients with osteoporosis compared with 574 without - mean age 60
Serological screening with TTG and endomysial antibody - biopsied if positive
Prevalence of coeliac disease 3.4% in osteoporosis group, compared with 0.2% in non osteoporosis group
43. Should osteoporotic patients be screened for coeliac Dx?
Stenson et al (2005), Arch Int Med
Also found that anti TTG levels correlated with T score at hip, femoral neck and lumbar spine
8 patients with coeliac disease maintained a GFD for 1 year - T scores sig improved
Authors recommended screening - $US 1500 to identify a coeliac patient
44. Should osteoporotic patients be screened for coeliac Dx?
Buchman (2005) Arch Int Med
Cost of screening US population $2 billion
Cost to prevent a single fracture $43,000
Similar figures to detect a breast cancer by mammography
45. Conclusions
Coeliac disease may present atypically
May present later in life
Mechanism of osteoporosis is secondary hyperparathyroidism
Fracture risk is increased in coeliac patients
Gluten free diet does increase bone mass
Screening has been recommended in a recent study