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A suppurative arthritis, like that caused by ordinary pus microbes, may be the result of gonococcal infection alone or of a mixed infection. Usually only one joint is affected, but the condition may be multiple. The articular cartilages are destroyed, the ends of the bones are covered with granulations, extra-articular abscesses form, and complete osseous ankylosis results.
The nature of the inflammatory and suppurative processes will be considered in detail later; suffice it here to say that they are brought about by the action of one or other of the organisms that we have now to consider. It is found that the staphylococci, which cluster into groups, tend to produce localised lesions; while the chain-forms streptococci give rise to diffuse, spreading conditions.
The actinomyces, which has never been met with outside the body, gives rise in oxen, horses, and other animals to tumour-like masses composed of granulation tissue; and in man to chronic suppurative processes which may result in a condition resembling chronic pyæmia.
In more severe infections the exudate consists of pus mixed with fibrin, and, it may be, red blood corpuscles purulent or suppurative synovitis; the synovial membrane and the ligaments are softened, and the surface of the membrane presents granulations resembling those on an ulcer; foci of suppuration may develop in the peri-articular cellular tissue and result in abscesses.
Anatomy Normal and adventitious bursæ Injuries: Bursal hæmatoma DISEASES: Infective bursitis; Traumatic or trade bursitis; Bursal hydrops; Solid bursal tumour; Gonorrhœal and suppurative forms of bursitis; Tuberculous and syphilitic disease Tumours Diseases of individual bursæ in the upper and lower extremities. A bursa is a closed sac lined by endothelium and containing synovia.
#Complications.# Diffuse suppurative cellulitis is the most serious local complication, and results from a mixed infection with other pyogenic bacteria. Small localised superficial abscesses may form during the convalescent stage. They are doubtless due to the action of skin bacteria, which attack the tissues devitalised by the erysipelas.
If the suppurative material discharges readily by way of the sole, no disturbance of the heel or quarters occurs above the hoof. Symptomatology. A supporting-leg-lameness characterizes this condition; and this lameness in most instances varies in degree with the amount of distress which is occasioned by pressure upon the inflamed parts.
In the latter stages of the disease the pulse becomes small and fluttering; the tongue becomes dry and brown; sordes collect on the teeth; and a low muttering form of delirium supervenes. Secondary infection of the parotid gland frequently occurs, and gives rise to a suppurative parotitis.
Chronic inflammation commonly results in new formations of tissue, and it is named according to the character of the new tissue formed, as ossifying, adhesive, and fibrous inflammation. Pus-forming bacteria produce suppurative inflammation. Such diseases as tuberculosis, glanders and hog-cholera are specific inflammations.
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