Difference between revisions of "Joints"
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**The definitions suffer from [[HPFitis]]. | **The definitions suffer from [[HPFitis]]. | ||
*Finding of plasma cells and lymphocytes is '''not''' contributory for the diagnosis of infection.<ref name=pmid17545426/> | *Finding of plasma cells and lymphocytes is '''not''' contributory for the diagnosis of infection.<ref name=pmid17545426/> | ||
*[[Granuloma|Granulomatous]] inflammation that isn't of a foreign-body type should get the usual work-up.<ref>URL: [http://path.upmc.edu/cases/case174.html http://path.upmc.edu/cases/case174.html]. Accessed on: 8 January 2012.</ref> | |||
====Feldman criteria==== | ====Feldman criteria==== | ||
Revision as of 18:14, 8 January 2012
Joints are important for locomotion. This article collects tidbits about their pathology.
Prosthetic joint infection
General
- Bits of tissue come for frozen section to r/o infection.
- The interface membrane (not the pseudocapsule) should be sampled to obtain a high sensitivity.[1]
Microscopic
Features:
- Neutrophils - key feature.
Notes:
- Various criteria for the number of neutrophils exist (see below).[2]
- The definitions suffer from HPFitis.
- Finding of plasma cells and lymphocytes is not contributory for the diagnosis of infection.[2]
- Granulomatous inflammation that isn't of a foreign-body type should get the usual work-up.[3]
Feldman criteria
Athanasou criterion
Juxta-articular myxoma
General
- Classically present as a mass or with pain.[4]
Microscopic
Features:[4]
- Myxomatous stroma.
- +/-Cystic changes.
- Large nuclei with hyperchromasia and nuclear scalloping.[5]
DDx:
Images:
Morton neuroma
Main article: Morton neuroma
See also
References
- ↑ 1.0 1.1 Bori, G.; Muñoz-Mahamud, E.; Garcia, S.; Mallofre, C.; Gallart, X.; Bosch, J.; Garcia, E.; Riba, J. et al. (Apr 2011). "Interface membrane is the best sample for histological study to diagnose prosthetic joint infection.". Mod Pathol 24 (4): 579-84. doi:10.1038/modpathol.2010.219. PMID 21131917.
- ↑ 2.0 2.1 2.2 2.3 Bori, G.; Soriano, A.; García, S.; Mallofré, C.; Riba, J.; Mensa, J. (Jun 2007). "Usefulness of histological analysis for predicting the presence of microorganisms at the time of reimplantation after hip resection arthroplasty for the treatment of infection.". J Bone Joint Surg Am 89 (6): 1232-7. doi:10.2106/JBJS.F.00741. PMID 17545426.
- ↑ URL: http://path.upmc.edu/cases/case174.html. Accessed on: 8 January 2012.
- ↑ 4.0 4.1 Meis, JM.; Enzinger, FM. (Jun 1992). "Juxta-articular myxoma: a clinical and pathologic study of 65 cases.". Hum Pathol 23 (6): 639-46. PMID 1592386.
- ↑ URL: http://path.upmc.edu/cases/case38/micro.html. Accessed on: 2 January 2011.