Intra-articular Osteochondroma Research Articles

Dysplasia Epiphysealis Hemimelica of the Acetabulum

Dysplasia epiphysealis hemimelica, which is also known as Trevor disease, is a rare developmental lesion that is histologically identical to an osteochondroma. The more common solitary osteochondroma and multiple hereditary osteochondromatosis typically are located on the metaphysis of long bones, occasionally on the diaphysis of long bones, and on flat bones, but never on the epiphysis. The index lesion is intra-articular and characteristically involves only half of the joint (hemimelic). The osseous portions of the lesion distinguish it from synovial chondromatosis, which always consists of multiple lesions usually dispersed throughout the joint. The osteochondroma of dysplasia epiphysealis hemimelica, in addition to being hemimelic, is initially a solitary lesion, although portions may break off, producing multiple pieces17. It is typically found in the joints of the lower extremity, with a predisposition for the medial femoral condyle, the distal aspect of the tibia, and the talus1,2,4,5,7,12,15,21,25. Mouchet and Belot16, in 1926, were the first to report this entity, and they called it tarsomegalie. Trevor25 described ten patients in 1950 and used the term tarso-epiphysial aclasis. In 1956, Fairbank5 reported on fourteen patients and renamed the condition dysplasia epiphysialis hemimelica. We report the cases of two patients who had a subluxation of the hip that was found to be associated with an isolated intra-articular osteochondroma of the acetabulum. These two cases are presented because of the isolated and unique acetabular location of the lesion. CASE 1. A five-year-old girl was referred to one of the authors (H. A. P.) because of a several-month history of bilateral discomfort of the lower limb. The patient's father had noted a change in the child's gait a few days before she was seen …

Intra-articular osteochondroma of the ankle joint

Intra-articular osteochondroma is a rare entity that appears as a single giant osteocartilaginous loose body in a joint cavity. The few reported cases of intra-articular osteochondroma have occurred in the knee joint. We report the case of a large osteochondral loose body in the ankle joint of a 10-year old girl and discuss the origin of the osteochondral tumor.

Intraarticular osteochondroma of the elbow

Osteochondroma is the most common benign bone tumor. The long tubular bones are commonly affected, including the proximal humerus and distal radius. A solitary lesion about the elbow is rare, and from review of the literature, no author has ever reported an intraarticular location as a site of an osteochondroma in the distal humerus:5. 8 We report the case of an intraarticular osteochondroma of the elbow without characteristic radiological appearance that caused progressive elbow ankylosis. (J SHOULDER ELBOW SURG 7994;3:270-2)

Physeal Osteochondroma of a Phalanx

I have presented the case of an intra-articular osteochondroma arising from the physis of a middle phalanx. I believe this to be the first report of this unusual variety of exostosis.

Intra???articular Osteochondromas of the Hip Joint in a Child with Multiple Osteochondromas Case Report

A child five and one-half years old with multiple osteochondromas presented with symptoms mainly affecting her right hip. Several intra-articular osteochondromas had formed about the femoral neck and acetabulum. The osteochondromas were removed, and hip development appears to be normal over a four-year follow-up period.

UNUSUAL CARTILAGINOUS TUMOR FORMATION OF THE SKELETON

The purpose of this article is to report a few cases of cartilaginous tumor of the skeleton, which represent in part unusual forms of otherwise well known conditions (enchondroma, single osteochondroma and multiple cartilaginous exostoses) and in part an apparently rare form of a multiple intra-articular tumor formation which, to my knowledge, has not yet been described in the literature. The case which will be reported last is one of a true intra-articular osteochondroma, which developed in more than one joint on the basis of a peculiar hyperplastic change of joint cartilage and which had to be differentiated from similar formations as they develop typically in persons with hypertrophic arthritis and from other conditions usually considered as neoplastic changes of the joint capsule, such as chondromatosis of the joints. As is so common in cases of cartilaginous tumor formation of the skeleton, besides the cartilaginous component a considerable amount of