Calcific tendinitiscalcific tendinitis of shoulder, calcific tendonitis shoulder
Calcific tendinitis is a form of tendinitis, a disorder characterized by deposits of hydroxyapatite a crystalline calcium phosphate in any tendon of the body, but most commonly in the tendons of the rotator cuff shoulder, causing pain and inflammation The condition is related to and may cause adhesive capsulitis "frozen shoulder"
- 1 Signs and symptoms
- 2 Cause
- 3 Diagnosis
- 4 Treatment
- 41 Medications
- 42 Physical therapy
- 43 Extracorporeal shock wave therapy
- 44 Surgery
- 45 Other
- 5 See also
- 6 References
- 7 External links
Signs and symptomsedit
Pain is often aggravated by elevation of the arm above shoulder level or by lying on the shoulder Pain may awaken the patient from sleep Other complaints may be stiffness, snapping, catching, or weakness of the shoulder
Three main theories have emerged in an attempt to explain the mechanisms involved in tendon calcification1 The first theory is the theory of reactive calcification and involves an active cell-mediated process, usually followed by spontaneous resorption by phagocytosing multinucleated cells showing a typical osteoclast phenotype The second theory suggests that calcium deposits are formed by a process resembling endochondral ossification The mechanism involves regional hypoxia, which transforms tenocytes into chondrocytes The third theory involves ectopic bone formation from metaplasia of mesenchymal stem cells normally present in tendon tissue into osteogenic cells As no single theory is satisfactory to explain all cases, calcific tendinopathy is currently believed to be multifactorial1
The calcific deposits are visible on X-ray as discrete lumps or cloudy areas The deposits look cloudy on X-ray if they are in the process of reabsorption, and this is also when they cause the most pain The deposits are crystalline when in their resting phase and like toothpaste in the reabsorptive phase However, poor correlation exists between the appearance of a calcific deposit on plain X-rays and its consistency on needling Ultrasound is also useful to depict calcific deposits and closely correlates with the stage of disease1
Usually it improves without specific treatment2 Treatments of calcific tendinitis may include physiotherapy, NSAIDs, or steroid injections2 If these do not work extracorporeal shock wave therapy or surgery may be considered2
Analgesics and nonsteroidal anti-inflammatory drugs NSAIDs are useful to a limited extent Corticosteroid injections may be useful when the shoulder is acutely inflamed but otherwise are not generally useful except for the temporary relief of pain
Electroanalgesia, ice therapy, and heat offer symptomatic relief The benefit of ultrasound in calcific tendinitis is debated; most studies are negative but a study by Ebenbichler et al 19993 showed resolution of deposits and clinical improvement Improving the biomechanics of the shoulder will reduce the tension on the fault muscles allowing a decrease in symptoms Improved biomechanics are thought to reduce the amount of calcification that occurs especially in the case on supraspinatus where it can be caused from repetitive compression against the acromion
Extracorporeal shock wave therapyedit
In those with calcific tendinitis of the shoulder high energy extracorporeal shock-wave therapy which uses sound waves can be useful4 It is not useful in other types of tendinitis4
Removing the deposit/s either with open shoulder surgery or arthroscopic surgery are both difficult operations, but with high success rates around 90% About 10% require re-operation If the deposit is large, then frequently the patient will require a rotator cuff repair to fix the defect left in the tendon when the deposit is removed or to reattach the tendon to the bone if the deposit was at the tendon insertion into the bone
In studies, acetic acid iontophoresis combined with ultrasound provided no better clinical results or shrinkage of the calcific deposits than did no treatment Platelet-rich plasma PRP is blood plasma that has been enriched with platelets It has not been well studied in calcific tendinitis2
Under local anesthetic, the calcific deposits can be mechanically broken up by puncturing them repeatedly with a needle and then aspirating the calcific material with the help of a sluice of saline Ultrasound can be used to help localize the deposit and to visualize the needle entering the deposit in real time Available evidence does not suggest a benefit over usual treatments5
- ^ a b c Arend CF Ultrasound of the Shoulder Master Medical Books, 2013 Free chapter on US evaluation of calcific rotator cuff tendinopathy available at ShoulderUScom
- ^ a b c d Carcia, CR; Scibek, JS March 2013 "Causation and management of calcific tendonitis and periarthritis" Current Opinion in Rheumatology 25 2: 204–9 PMID 23370373 doi:101097/bor0b013e32835d4e85
- ^ Ebenbichler GR, Erdogmus CB, Resch KL, et al May 1999 "Ultrasound therapy for calcific tendinitis of the shoulder" N Engl J Med 340 20: 1533–8 PMID 10332014 doi:101056/NEJM199905203402002
- ^ a b Bannuru, RR; Flavin, NE; Vaysbrot, E; Harvey, W; McAlindon, T Apr 15, 2014 "High-energy extracorporeal shock-wave therapy for treating chronic calcific tendinitis of the shoulder: a systematic review" Annals of Internal Medicine 160 8: 542–9 PMID 24733195 doi:107326/m13-1982
- ^ Vignesh, KN; McDowall, A; Simunovic, N; Bhandari, M; Choudur, HN January 2015 "Efficacy of ultrasound-guided percutaneous needle treatment of calcific tendinitis" AJR American journal of roentgenology 204 1: 148–52 PMID 25539250 doi:102214/ajr1311935
- eMedicine on Calcific Tendonitis
- Extracorporeal shock wave therapy subscription required
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