Intra-articular osteochondral fragments either free or attached to the synovium were found in 10 joints. This article describes the radiographic changes seen in many of the currently recognized joint disorders of domestic cats. Chondrosarcoma arising in bone and extending into the joint can be radiologically distinguished from primary synovial chondromatosis the histologic atypia of these two conditions may appear similar. Synovial chondromatosis of the hip: evaluation with air computed arthrotomography. Synovial chondromatosis commonly occurs within joints. Synovectomy is more extensive than simple removal of loose bodies, and it may be associated with increased morbidity eg, arthrofibrosis.
Extrinsic erosion can be quite deep, a finding suggestive of a more aggressive process, although true marrow invasion has not been observed in our experience ,. Treatment in all cases consisted of removal of the osteochondroma with debridement of the deep digital flexor tendon when this was affected. Malignant transformation to chondrosarcoma is unusual 5% of cases and, although difficult to distinguish from benign disease, is suggested by multiple recurrences and marrow invasion. Radiographic evaluation showed signs of several nodular radiopacities in both stifles and both shoulders. It is thought to be due to metaplasia. At this recurrence, biopsy results were misinterpreted histologically as representing sarcomatous transformation to chondrosarcoma and led to treatment with hemipelvectomy. It is quite distinct to.
Osteochondrosis in the dog: a review. Nevertheless, surgical removal combined with partial synovectomy has demonstrated decreased recurrence rates and remains the current standard of care. Over time, she became unable to bear weight on her right leg. Chromosome 6 abnormalities are recurrent in synovial chondromatosis. Primary synovial chondromatosis has been reported to affect more than one joint, particularly both knees, in 5%—10% of cases ,, ,. Periosteal reaction may also be seen associated with the bone destruction ,.
Generalized synovial chondromatosis of the knee: a comparison of removal of the loose bodies alone with arthroscopic synovectomy. Our experience is similar to that reported by Kramer and colleagues, but with several variations. Anti-inflammatory agents may offer symptomatic improvement, but surgical exploration of the affected joint with removal of the nodular lesions and synovectomy is the recommended method of treatment. These nodules may detach to form loose bodies. The involvement of traumatic factors has been reported. Additionally, magnetic resonance imaging demonstrates any increased signal on T2-weighted images. She was placed in a knee immobiliser in extension and was allowed normal activity and weight bearing.
Canadian Association of Radiologists Journal. In this article, we report an 85-year-old woman with bilateral knee pain and swelling secondary to bilateral synovial osteochondromatosis. Synovial chondrometaplasia was diagnosed in 5 dogs. She ambulated on two axillary crutches. Pain is not relieved with drugs or steroid injections. It has been suggested to cause increased calcitonin activity, thus leading to delayed cartilage mineralisation, adequate mineralisation being necessary for subsequent endochondral ossification. Different area of this lesion demonstrated decreased cellularity and necrosis not shown.
Synovial chondromatosis may be primary or secondary. It also should be suspected when periarticular osteophytes are found radiographically in unusual locations. Ultrasound diagnosis of osteochondromatosis of the popliteal fossa. Innumerable chondral bodies are seen within the distended sheath small arrows. Moreover, it may occur in the setting of preexistent osteoarthritis, rheumatoid arthritis, osteonecrosis, osteochondritis dissecans, neuropathic osteoarthropathy, tuberculosis, or osteochondral fractures. Associate Professor of Pathology, Cornell University Medical College.
These nodules may subsequently enlarge and detach to lie within the joint space. Lesions of degenerative joint disease are frequently observed. Two cases of tenosynovial chondromatosis of the shoulder are presented, the literature on this rare lesion is reviewed, and the differential diagnosis, diagnosis, and treatment are discussed. Case report 817: synovial chondrosarcoma secondary to synovial chondromatosis. While various staging systems exist, there is some thought that the staging of synovial chondromatosis is a matter of timing and that the process is in fact self-limiting, as the cartilage nodules resorb over the course of years, leaving many cases undiagnosed.
The locking symptoms were similar to those associated with a bucket handle meniscus tear. The influence of the dietary protein content on growth in giant breed dogs. All authors have no financial relationships to disclose. They have a consistent metaphyseal location and most are found in the middle one-third of the radius. Secondary synovial chondromatosis associated with mechanical or arthritic conditions can be distinguished histologically from primary synovial chondromatosis by the reactive, proliferative chondral bodies that often have a central nidus of nonneoplastic hypocellular cartilage that grows in concentric rings frequently multiple or with a layered effect , lack of atypia, and presence of fragments of articular hyaline cartilage ,, ,, , , ,. The process is seen surrounding the biceps tendon arrow. The intent of this review is to present, in a single reference, the pathophysiology, diagnosis, and treatment of reported causes of lameness intrinsically associated with the shoulder.
Rarely, it also involves temporomandibular joint. The procedure should be repeated while rotating the humerus medially to bring the lesion into a caudal position. Synovial Chondromatosis with Large Loose Bodies — Image Credit: Radiopedia Secondary synovial chondromatosis is more common. On examination, the patient was found to have a normal alignment; however, the right knee was fixed in a flexed position. Because it is most frequently related to degenerative arthropathy, secondary synovial chondromatosis most commonly affects the knee and hip, followed by the shoulder ,, ,.
Synovial osteochondromatosis: a histopathological study of thirty cases. Radiographic and other forms of diagnosis, however also the possibility of conservative treatment, are discussed. It is also contrasted with , which is the abnormal growth of cytologic and histologic elements without a stimulus. The epiphyseal cartilage is avascular, so that it only receives its nutrition via osmosis from the synovial fluid. The recurrence rate reported for extraarticular primary synovial chondromatosis has varied widely.