Tuberculous Arthritis / Osteoarticular TB — বাংলা ক্লিনিক্যাল নোট
Tuberculous arthritis হলো Mycobacterium tuberculosis complex দ্বারা সৃষ্ট chronic granulomatous infection of synovium/joint, সাধারণত ধীরে ধীরে monoarthritis হিসেবে আসে—বিশেষ করে knee, hip, ankle, wrist বা sacroiliac joint। এটি extrapulmonary TB-এর একটি রূপ। WHO অনুযায়ী extrapulmonary TB diagnosis কঠিন, কারণ specimen পাওয়া কঠিন এবং lesion অনেক সময় paucibacillary হয়।
1) Definition — সংজ্ঞা
Tuberculous arthritis বলতে বোঝায় এমন joint infection যেখানে M. tuberculosis synovium, articular cartilage, subchondral bone ও periarticular tissue-এ chronic granulomatous inflammation তৈরি করে, ফলে pain, swelling, stiffness, erosion ও joint destruction হয়।
Core meaning:
এটি সাধারণ bacterial septic arthritis-এর মতো acute hot joint নয়; বরং slowly progressive cold monoarthritis — pain + swelling + stiffness + constitutional TB symptoms থাকতে পারে বা নাও থাকতে পারে।
2) Cause / Etiology — কারণগুলো
- মূল জীবাণু:
Mycobacterium tuberculosis complex; rare ক্ষেত্রে M. bovis বা nontuberculous mycobacteria। - Spread / Pathogenesis:
সাধারণত primary pulmonary TB বা latent focus থেকে hematogenous spread হয়ে synovium বা metaphyseal bone-এ bacilli lodge করে। পরে reactivation হলে synovitis → pannus-like granulation tissue → cartilage destruction → bone erosion → deformity/ankylosis হয়। - Common joint involvement:
Knee, hip, ankle, wrist, elbow, shoulder; অধিকাংশ ক্ষেত্রে single joint আক্রান্ত হয়। - Risk factors:
- পূর্বের TB বা close TB contact
- HIV, diabetes mellitus, CKD, malnutrition
- steroid/biologic/anti-TNF therapy
- alcoholism, elderly, poor living condition
- chronic joint disease বা previous joint trauma/surgery
- Bangladesh-এর মতো TB-endemic setting
3) Symptoms / Clinical Features — লক্ষণগুলো
Local joint symptoms
- ধীরে ধীরে joint pain: সপ্তাহ–মাস ধরে বাড়ে; acute pyogenic arthritis-এর মতো খুব sudden নয়।
- Swelling: অনেক সময় “cold swelling” — redness/marked heat কম থাকে।
- Stiffness ও restricted range of motion: flexion deformity, walking difficulty, limping।
- Tenderness: সাধারণত mild–moderate; severe acute tenderness না-ও থাকতে পারে।
- Muscle wasting: chronic disease হলে periarticular muscle wasting দেখা যায়।
- Sinus / cold abscess: late disease-এ sinus tract বা para-articular abscess হতে পারে।
- Deformity / ankylosis: untreated হলে joint destruction, fibrous ankylosis।
Constitutional TB symptoms
- Low-grade fever
- Night sweat
- Weight loss
- Anorexia
- Fatigue
- Chronic cough/hemoptysis থাকতে পারে যদি pulmonary TB coexist করে
4) Clinical Diagnosis — কীভাবে clinically সন্দেহ করবেন
Strong clinical suspicion করবেন যদি:
- Chronic monoarthritis > 2–4 weeks
- Knee/hip/ankle/wrist-এর painless বা mildly painful swelling
- ESR/CRP persistently high
- Routine antibiotic/NSAID-এ improvement নেই
- TB contact/history, weight loss, night sweat, low-grade fever
- X-ray/MRI-তে chronic synovitis, erosion, effusion
- Synovial fluid bacterial Gram stain/culture negative কিন্তু inflammatory picture
Important: diagnosis শুধু clinical না; confirmation ideally synovial fluid/tissue থেকে AFB culture, NAAT/Xpert MTB/RIF বা histopathology দিয়ে করতে হয়।
5) Specific Investigations — নির্দিষ্ট পরীক্ষা
A) Joint aspiration — treatment শুরুর আগে সম্ভব হলে
- Synovial fluid routine: WBC count, differential, protein/glucose।
- Gram stain + bacterial culture: pyogenic septic arthritis exclude করার জন্য।
- Crystal analysis: gout/pseudogout exclude।
- AFB smear: positive হলে helpful, কিন্তু sensitivity কম।
- Mycobacterial culture: LJ/MGIT culture; definitive কিন্তু সময় লাগে।
- Xpert MTB/RIF বা Xpert Ultra: দ্রুত MTB detect + rifampicin resistance screening।
B) Synovial biopsy / tissue diagnosis
- Best diagnostic yield যখন fluid negative কিন্তু suspicion high।
- Histopathology: epithelioid granuloma, Langhans giant cell, caseous necrosis।
- Tissue AFB stain, culture, NAAT, drug susceptibility testing পাঠাবেন।
C) Blood tests
- CBC, ESR, CRP
- Baseline LFT: ALT/AST, bilirubin, ALP
- RFT/eGFR
- Uric acid — pyrazinamide-induced hyperuricemia baseline/monitoring
- HBV/HCV screening if risk or baseline liver disease
- HIV test — WHO TB guidance-এ presumptive/diagnosed TB রোগীর HIV testing গুরুত্বপূর্ণ বলা হয়েছে।
D) Imaging
- X-ray affected joint: early normal হতে পারে; later Phemister triad—juxta-articular osteopenia, marginal erosion, gradual joint-space narrowing। Lancet-এর Phemister triad report-এ এই তিনটি radiographic feature উল্লেখ আছে।
- Ultrasound: effusion, synovial hypertrophy, aspiration guidance।
- MRI: early synovitis, marrow edema, cartilage damage, abscess, sinus tract, osteomyelitis detect করতে best।
- CT: bony destruction, sequestrum, deep abscess evaluation।
E) Search for pulmonary/disseminated TB
- Chest X-ray
- Sputum AFB smear/culture/Xpert if cough or CXR abnormal
- Urine/lymph node/other site work-up if disseminated TB suspicion
F) Supportive tests only
- Mantoux/TST বা IGRA: TB exposure/supportive; active joint TB confirm করে না।
6) Differential Diagnosis
- Pyogenic septic arthritis
- Rheumatoid arthritis monoarticular onset
- Gout / pseudogout
- Reactive arthritis
- Brucella arthritis
- Fungal arthritis
- Chronic osteomyelitis
- Pigmented villonodular synovitis
- Bone/joint tumor
- Osteoarthritis flare, especially elderly knee/hip
7) Complications — রোগের জটিলতা
- Permanent cartilage destruction: joint surface নষ্ট হয়ে chronic pain ও stiffness হয়।
- Bone erosion ও deformity: joint alignment নষ্ট হতে পারে।
- Fibrous বা bony ankylosis: joint একদম শক্ত হয়ে যেতে পারে।
- Cold abscess / sinus tract: দীর্ঘদিন pus-like discharge হতে পারে।
- Secondary bacterial infection: sinus থাকলে mixed infection হতে পারে।
- Pathological fracture / subluxation: severe bone destruction হলে।
- Growth disturbance: শিশুদের epiphyseal involvement হলে limb shortening/deformity।
- Spinal TB হলে: cord compression, neurological deficit, paraplegia।
- Drug-resistant TB: incomplete/irregular ATT হলে MDR/RR-TB ঝুঁকি।
8) Treatment & Management — Guideline-based
A) Core regimen
বাংলাদেশ NTP/Prescribing Companion অনুযায়ী osteoarticular TB and spinal TB-তে treatment duration 12 months: 2HRZE/10HR—প্রথম ২ মাস HRZE, পরের ১০ মাস HR।
WHO adult extrapulmonary TB-তে 6-month 2HRZE/4HR core regimen উল্লেখ করলেও bone/joint TB-তে কিছু expert group 9–12 months longer therapy suggest করে, এবং clinician disease response অনুযায়ী 12 months পর্যন্ত বাড়াতে পারে।
Regimen:
- Intensive phase: 2 months — Isoniazid + Rifampicin + Pyrazinamide + Ethambutol
- Continuation phase: 10 months — Isoniazid + Rifampicin
- Daily supervised therapy / DOT/NTP follow-up preferable।
B) Adult dose — generic dose
| Drug | Usual adult daily dose |
| Isoniazid | 5 mg/kg/day, max 300 mg/day |
| Rifampicin | 10 mg/kg/day, max 600 mg/day |
| Pyrazinamide | 20–30 mg/kg/day |
| Ethambutol | 15–25 mg/kg/day |
Weight-based adult dosing tables commonly use H 4–6 mg/kg, R 8–12 mg/kg, Z 20–30 mg/kg, E 15–25 mg/kg once daily.
9) Pharmacological drugs — point আকারে
1. Generic name: Rifampicin + Isoniazid + Pyrazinamide + Ethambutol — HRZE FDC
- Therapeutic category: Anti-tubercular / Combined anti-TB preparation
- Pharmacological class: Rifamycin + mycolic-acid synthesis inhibitor + pyrazinamide prodrug + arabinosyl-transferase inhibitor
- Purpose / কেন used হয়:
Intensive phase-এ high bacillary load কমানো, intracellular/extracellular MTB kill করা, resistance prevent করা। - Bangladesh available brand name:
Rimstar 4-FDC Tablet — Rifampicin 150 mg + Isoniazid 75 mg + Pyrazinamide 400 mg + Ethambutol 275 mg; SANDOZ. MedEx-এ এই 4-FDC brand listed আছে। - Dose / duration:
MedEx অনুযায়ী Rimstar 4-FDC: 30–37 kg = 2 tab daily, 38–54 kg = 3 tab daily, 55–70 kg = 4 tab daily, >70 kg = 5 tab daily; once daily for 2 months intensive phase। - Important side effects:
Hepatitis, nausea/vomiting, rash, fever; ethambutol optic neuritis; rifampicin orange urine/tears; pyrazinamide hyperuricemia/gout; isoniazid neuropathy। - Important interactions:
Rifampicin reduces effect of oral contraceptive, warfarin/anticoagulants, methadone, sulfonylureas and some HIV drugs; isoniazid increases phenytoin/disulfiram levels; rifampicin may need ART dose adjustment, e.g., dolutegravir twice daily in TB/HIV settings.
2. Generic name: Rifampicin + Isoniazid — HR FDC
- Therapeutic category: Anti-tubercular / Combined anti-TB preparation
- Pharmacological class: Rifamycin + mycolic-acid synthesis inhibitor
- Purpose / কেন used হয়:
Continuation phase-এ persistent bacilli eradicate করা এবং relapse prevent করা। - Bangladesh available brand names:
- Rifagen Tablet — Rifampicin 450 mg + Isoniazid 300 mg; Pharmadesh
- Rimactazid Tablet — Rifampicin 300 mg + Isoniazid 150 mg; SANDOZ
- Rimactazid Tablet — Rifampicin 450 mg + Isoniazid 300 mg; SANDOZ
MedEx-এ এগুলো HR combination হিসেবে listed।
- Dose / duration:
Generic target: Rifampicin up to 600 mg/day + Isoniazid up to 300 mg/day once daily; osteoarticular TB-তে continuation usually 10 months if 2HRZE/10HR regimen used। - Side effects:
Hepatitis, GI upset, rash; rifampicin orange discoloration; isoniazid peripheral neuropathy। - Interactions:
Rifampicin is a strong inducer; OCP/warfarin/DOAC/azole/ART/antiepileptic interactions check করা জরুরি। Isoniazid phenytoin/carbamazepine toxicity বাড়াতে পারে।
3. Generic name: Rifampicin
- Therapeutic category: Anti-tubercular antibiotic
- Pharmacological class: Rifamycin; DNA-dependent RNA polymerase inhibitor
- Purpose / কেন used হয়:
Highly bactericidal + sterilizing drug; relapse prevention-এ key drug। - Bangladesh available brand names:
- Rifcin Syrup — 100 mg/5 ml; Pharmadesh
- Rifcin Capsule — 150 mg; Pharmadesh
- Rimactane Tablet — 450 mg; SANDOZ
MedEx rifampicin page-এ এগুলো listed।
- Dose: 10 mg/kg/day, max 600 mg/day।
- Side effects: orange urine/tears, hepatitis, GI upset, thrombocytopenia, rash।
- Interactions: OCP failure, warfarin INR drop, DOAC level drop, azole antifungal failure, methadone withdrawal, sulfonylurea effect কমা, many ART interactions। CDC rifamycin interactions হিসেবে OCP, blood thinners, HIV medicines, methadone উল্লেখ করেছে।
4. Generic name: Isoniazid
- Therapeutic category: Anti-tubercular chemotherapeutic
- Pharmacological class: Mycolic-acid synthesis inhibitor
- Purpose / কেন used হয়:
Actively multiplying MTB kill করে; HRZE ও HR—দুই phase-তেই backbone drug। - Bangladesh available brand:
MedEx search-result থেকে standalone isoniazid brand নিশ্চিতভাবে পাইনি; Bangladesh practice-এ সাধারণত FDC HRZE/HR হিসেবেই বেশি ব্যবহৃত হয়। - Dose: 5 mg/kg/day, max 300 mg/day।
- Side effects: hepatitis, peripheral neuropathy, rash, CNS irritability/seizure rare।
- Interactions: phenytoin ও disulfiram level বাড়াতে পারে; alcohol/paracetamol overuse হলে hepatotoxicity risk বাড়ে।
- Monitoring: baseline LFT; high-risk হলে closer LFT।
5. Generic name: Pyrazinamide
- Therapeutic category: Anti-tubercular agent
- Pharmacological class: Pyrazine/nicotinamide analogue; prodrug
- Purpose / কেন used হয়:
Acidic intracellular environment-এ sterilizing activity; regimen shorten করতে সাহায্য করে। - Bangladesh available brand:
MedEx-এ standalone pyrazinamide brand নিশ্চিতভাবে পাইনি; HRZE FDC Rimstar 4-FDC-তে Pyrazinamide 400 mg/tablet আছে। - Dose: 20–30 mg/kg/day, commonly 25 mg/kg/day।
- Side effects: hepatitis, nausea, hyperuricemia, gout flare, arthralgia, rash।
- Interactions: hepatotoxic drugs/alcohol avoid; uric-acid-lowering therapy effect alter করতে পারে।
- Note: gout attack বা severe liver disease থাকলে specialist decision।
6. Generic name: Ethambutol
- Therapeutic category: Anti-tubercular chemotherapeutic
- Pharmacological class: Arabinosyl-transferase inhibitor; cell-wall synthesis inhibitor
- Purpose / কেন used হয়:
Initial phase-এ resistance cover করতে, বিশেষ করে INH resistance exclude না হওয়া পর্যন্ত। - Bangladesh available brand name:
Sural Tablet — Ethambutol 400 mg; Ambee Pharmaceuticals. MedEx-এ listed। - Dose: 15–25 mg/kg/day।
- Side effects: optic neuritis, blurred vision, red-green color vision defect, rash, GI upset।
- Interactions: aluminium-containing antacid absorption কমাতে পারে; renal impairment-এ dose adjustment দরকার।
- Monitoring: baseline visual acuity + color vision; visual symptom হলে immediately stop/refer।
7. Generic name: Pyridoxine Hydrochloride — Vitamin B6
- Therapeutic category: Vitamin
- Pharmacological class: Water-soluble vitamin B6
- Purpose / কেন used হয়:
Isoniazid-induced peripheral neuropathy prevent/treat করতে। - Dose: prophylaxis 25–50 mg/day; neuropathy হলে 100 mg/day পর্যন্ত specialist advice-এ। CDC risk group—pregnancy, HIV, diabetes, alcoholism, malnutrition, CKD, elderly—এ pyridoxine 25–50 mg/day উল্লেখ করেছে।
- Bangladesh available brand names:
- G-Vitamin B6 Tablet — 25 mg
- Pyrol Tablet — 25 mg
- Pyrovit Tablet — 20 mg
- Sixvit Tablet — 20 mg
MedEx-এ pyridoxine brands হিসেবে listed।
- Side effects: usual dose-এ minimal; very high dose দীর্ঘদিন নিলে sensory neuropathy।
- Interactions: levodopa without carbidopa-এর effect কমাতে পারে।
10) Symptomatic / adjunct drugs Bangladesh doctors commonly use
এগুলো TB kill করে না; pain, inflammation, gastric protection বা adverse-effect prevention-এর জন্য।
A) Paracetamol
- Generic: Paracetamol
- Therapeutic category: Analgesic/antipyretic
- Dose: 500–1000 mg PO 6–8 hourly PRN; max 3–4 g/day, liver disease/alcohol use-এ কম।
- Why used: fever/pain control।
- Bangladesh brands: Napa 500 mg tablet, Napa drops 80 mg/ml, Napa IV 10 mg/ml; MedEx-এ listed।
- Caution: INH/RIF/PZA hepatotoxic হতে পারে, তাই high-dose paracetamol avoid।
B) NSAID — Naproxen
- Generic: Naproxen sodium
- Therapeutic category: NSAID analgesic/anti-inflammatory
- Dose: 250–500 mg PO BD after food, shortest duration।
- Why used: inflammatory joint pain/swelling reduce।
- Bangladesh brands: Naproxen 500 mg, Naproxin 250/500 mg, Napryn 250/500 mg, Naprox gel 10%—MedEx-এ listed।
- Caution: gastritis/ulcer, renal impairment, uncontrolled HTN, anticoagulant use।
C) COX-2 NSAID — Etoricoxib
- Generic: Etoricoxib
- Therapeutic category: NSAID / selective COX-2 inhibitor
- Dose: 60–90 mg once daily, short course; CV risk থাকলে avoid/caution।
- Why used: joint pain with less gastric irritation than nonselective NSAID, তবে CV/renal risk আছে।
- Bangladesh brands: Setorib 60/90 mg, SB-Eto 60/120 mg—MedEx-এ listed।
D) PPI gastroprotection — Pantoprazole
- Generic: Pantoprazole sodium
- Therapeutic category: Proton pump inhibitor
- Dose: 20–40 mg OD before breakfast; NSAID/gastritis risk থাকলে।
- Why used: NSAID-induced dyspepsia/ulcer prophylaxis।
- Bangladesh brands: Pantac 20/40 mg, Pantodac 20/40 mg, Pantonix 20/40 mg, Protocid 20/40 mg, Pantolok 20/40 mg—MedEx-এ listed।
11) Bangladesh doctors’ practical prescription pattern — সাধারণভাবে
TB arthritis suspected/confirmed হলে বাংলাদেশে সাধারণত এই pattern দেখা যায়:
- ATT under NTP/DOTS:
- Intensive: HRZE FDC 2 months
- Continuation: HR 10 months for osteoarticular/spinal TB
- Weight-band অনুযায়ী tablet count
- Purpose: MTB eradication + relapse/resistance prevention
- Pyridoxine 20–50 mg daily:
- Purpose: INH neuropathy prevention
- Analgesic:
- Paracetamol PRN
- NSAID short course if no contraindication
- Purpose: pain/inflammation control
- PPI if NSAID/gastritis risk:
- Pantoprazole 20–40 mg OD
- Purpose: gastric protection
- Physiotherapy + joint protection:
- Acute painful phase: rest, splint in functional position, non-weight bearing if hip/knee severe
- After pain improves: active-assisted ROM exercises to prevent stiffness
- Avoid prolonged immobilization
- Surgical referral:
- Diagnosis uncertain and biopsy needed
- Large abscess/sinus
- Mechanical instability
- Neurological deficit in spinal TB
- No clinical response after adequate ATT
Bangladesh guideline notes surgery should be considered for neurological deficit, unstable spinal lesion or non-response.
12) Monitoring during treatment
- Monthly clinical review: pain, swelling, ROM, weight, fever, adherence।
- Baseline + follow-up LFT if symptomatic/high-risk।
- Visual acuity/color vision for ethambutol।
- Uric acid if gout symptoms with pyrazinamide।
- ESR/CRP trend every 1–2 months may help, but clinical response বেশি important।
- Repeat MRI only if poor response, abscess, neurological sign, or diagnostic doubt।
- If no improvement after 6 months, Bangladesh guidance says DR-TB evaluation and specialist/tertiary referral করা উচিত।
13) Prevention — কীভাবে প্রতিরোধ করবেন
- Early diagnosis and complete treatment: incomplete ATT হলো relapse/MDR-TB-এর বড় কারণ।
- Contact tracing: household contact screening; symptomatic contact-কে CXR/sputum/Xpert।
- Latent TB preventive treatment: eligible household contacts, PLHIV, children—national guideline অনুযায়ী।
- BCG vaccination: newborn BCG severe childhood TB কমায়।
- Pulmonary TB থাকলে infection control: mask, ventilation, cough etiquette, early treatment; TB arthritis alone usually contagious নয় যদি pulmonary/laryngeal TB না থাকে।
- Immunosuppressed patient screening: anti-TNF/biologic/steroid শুরু করার আগে TST/IGRA + CXR।
- Diabetes/HIV control: poor immunity TB reactivation বাড়ায়।
- Adherence support: DOT, counselling, adverse-effect education।
CDC prevention guidance অনুযায়ী latent/inactive TB treatment active TB prevent করতে পারে, active pulmonary/throat TB-তে spread-prevention দরকার, এবং TB medicine ঠিকমতো সম্পূর্ণ করা জরুরি।
Overview / Summary
Tuberculous arthritis হলো chronic extrapulmonary TB, সাধারণত monoarticular, slow progressive, “cold” joint swelling সহ আসে। Diagnosis-এর key হলো synovial fluid/tissue AFB culture, Xpert MTB/RIF/Ultra, histopathology। Bangladesh NTP-oriented regimen osteoarticular TB-তে 2HRZE/10HR = 12 months। Pain control, pyridoxine, physiotherapy, and selective surgery are supportive pillars.
Actionable Plan / Steps
- Chronic monoarthritis হলে TB arthritis suspect করুন, বিশেষ করে knee/hip/ankle/wrist।
- ATT শুরু করার আগে joint aspiration ± synovial biopsy করে AFB culture, Xpert MTB/RIF, histopathology পাঠান।
- Baseline CBC, ESR/CRP, LFT, RFT, uric acid, HIV, CXR করুন।
- Drug-susceptible হলে NTP regimen: 2 months HRZE + 10 months HR।
- Pyridoxine 25–50 mg/day দিন, বিশেষ করে neuropathy risk থাকলে।
- Ethambutol চলাকালে visual monitoring; hepatotoxic symptom হলে LFT urgent।
- 6 months-এ improvement না হলে adherence, wrong diagnosis, abscess, MDR/RR-TB evaluate করুন।
- Physiotherapy ও functional joint positioning early শুরু করুন; abscess/sinus/non-response/instability হলে ortho referral।
Reference List — Textbook + Guideline + DOI
Textbooks
- Harrison’s Principles of Internal Medicine, 21st ed. Tuberculosis chapter; infectious arthritis/extrapulmonary TB sections.
- Davidson’s Principles and Practice of Medicine, 24th ed. Infectious diseases: Tuberculosis.
- Mandell, Douglas, and Bennett’s Principles and Practice of Infectious Diseases, 9th ed. Mycobacterium tuberculosis.
- Kelley and Firestein’s Textbook of Rheumatology, 11th ed. Infectious arthritis.
- Robbins & Cotran Pathologic Basis of Disease, 10th ed. Granulomatous inflammation and tuberculosis.
Guidelines / national sources
- WHO Consolidated Guidelines on Tuberculosis, Module 4: Treatment and Care, 2025.
- Bangladesh National TB Programme / Prescribing Companion: Treatment for extra-pulmonary TB patients—osteoarticular TB/spinal TB 2HRZE/10HR.
- CDC: Adverse Events During TB Treatment, updated 2025.
Peer-reviewed articles with DOI
- Marais LC, Nieuwoudt L, Nansook A, Menon A, Benito N. Tuberculous arthritis of native joints: a systematic review and European Bone and Joint Infection Society workgroup report. J Bone Jt Infect. 2023;8:189–207. DOI: 10.5194/jbji-8-189-2023.
- Pigrau-Serrallach C, Rodríguez-Pardo D. Bone and joint tuberculosis. Eur Spine J. 2013;22 Suppl 4:556–566. DOI: 10.1007/s00586-012-2331-y.
- Chattopadhyay A, Sharma A, Gupta K, Jain S. The Phemister triad. Lancet. 2018;391:e20. DOI: 10.1016/S0140-6736(18)30986-3.
- Agashe VM et al. Diagnosis of osteoarticular tuberculosis: perceptions, protocols, practices, and priorities in endemic and non-endemic areas—a WAIOT view. Microorganisms. 2020;8(9):1312. DOI: 10.3390/microorganisms8091312.
Md.Rafiqul Islam Lipu,Date:-15-06-2026 Tuesday,Time:-12-08-12 Pm