No abstract available.
Osteochondritis ; Osteochondritis Dissecans

No abstract available.
Osteochondritis Dissecans* ; Osteochondritis*

No abstract available.
Knee* ; Osteochondritis Dissecans* ; Osteochondritis*

We have compared the computed tomographic(C. T.) findings with those of conventional roentgenogram(simple AP and lateral radiograms) in 18 cases of osteochondritis dissecans of the capitellum humeri available for review. Among the 18 cases, 2 cases of them had a lesion of osteochondritis dissecans on C. T. which, however, had not been found on conventional rentgenograms. Fro the 5 cases, which had not clearly found on conventional rentgenograms, 2 loose body on conventional view, 3 cases had different numbers and locations of loose body on C. T. films. On the bases of our findings, we recommend that C. T. is necessary in early detection and the determination of anatomical location and status of osteochondritis dissecans of capitellum.
Osteochondritis Dissecans ; Osteochondritis

Osteochondritis dissecans (OCD) of both femoral condyles is very rare, with no previously reported cases of bilateral OCD of both knees in two siblings. We report on a brother and sister with both femoral condyle OCD with a description of surgical technique and clinical results. Fixation using headless compressive screws, osteochondral autologous transplantation and autologous chondrocyte implantation were all successful.
Chondrocytes ; Humans ; Knee ; Osteochondritis ; Osteochondritis Dissecans ; Siblings ; Transplantation, Autologous

PURPOSE: The purpose of this study is to identify bilateral differences of physeal closure of the lateral compartment of the elbow in osteochondritis dissecans (OCD) and related factors with premature physeal closure. METHODS: Initial radiographs of the bilateral elbows in 40 baseball players with OCD (group I) were reviewed for the status of physeal closure of the lateral compartment; capitellum, radial head, lateral epicondyle. Forty baseball players with medial epicondylar apophysitis (group II) were enrolled as a control. Relative status of physeal closure of dominant elbow was defined as early, same, and delayed. Bilateral differences of the status of physeal closure were analyzed between groups, and according to the radiographic stages, extent of the lesions and demographic factors in group I. RESULTS: Significant early physeal closures of dominant elbows were identified in group I in capitellum (group I, 55%; group II, 3%), radial head (group I, 53%; group II, 3%), and lateral epicondyle (group I 37%; group II, 5%). In group I, advanced stage and extended lesion showed early lateral compartment physeal closure especially in capitellum and radial head, and players with longer career length and limitation of motion showed early closure. CONCLUSION: Over the half of the adolescent baseball players with OCD demonstrated early radiocapitellar physeal closures of dominant elbow in initial presentation. Because premature physeal closure contributes to the development of arthritis without appropriate radiocapitellar remodeling, early detection of OCD is essential for prevention of arthritis and successful conservative management.
Adolescent* ; Arthritis ; Baseball* ; Demography ; Elbow* ; Head ; Humans ; Osteochondritis Dissecans* ; Osteochondritis*

Along with the popularity of youth movement, the incidence of osteochondritis dissecans (OCD) showed a trend of increase, but its pathogenesis is not yet clear. Previous studies suggested that trauma is the main potential cause, but with the emergence of vast family cases, hereditary factor is also gradually taken seriously. Arthroscopy is the "gold standard" for diagnosing OCD, but for the patient with early incomplete joint surface lesions, the diagnositic value of MRI is better than the arthroscopy. For the patients with stable form OCD, nonoperative management should be used such as adjusting activity, fixator and drugs; for the patient with unstable form OCD or failing after conservative treatment, surgery should be generally used such as joint clearing, drilling, microfracture method, fixation and transplantation. With the progress of research, stem cell technology and platelet-rich plasma gradually applied in cartilage repair, which will improve the curative effect of OCD, but still further clinical and experimental research, and also a long-term effective follow-up are needed.
Humans ; Osteochondritis Dissecans ; diagnosis ; etiology ; therapy

PURPOSE: To evaluate the results of autologous chondrocyte implantation with a concomitant injury. MATERIALS AND METHODS: Sixty-seven chondral defects (39 cases, 36 patients), which were treated with autologous chondrocyte implantation, were analyzed with a minimum follow-up of 2 years. The cases were divided into the following five groups: 4 cases of a single chondral defect (group I), 3 cases of multiple chondral defects (group II), 5 cases of osteochondritis dissecans (group III), 9 cases of a single chondral defect with a concomitant injury (group IV), and 18 cases of multiple chondral defects with a concomitant injury (group V). The clinical outcomes were evaluated using the International Knee Documentation Committee (IKDC) subjective and objective scores and the International Cartilage Repair Society (ICRS) functional evaluation system. Arthroscopic examinations were performed on 12 cases and 21 chondral defects. RESULTS: The mean IKDC subjective score was 39.8 preoperatively, which improved to 64.1 postoperatively, and the IKDC objective score was C in 54% and D in 46%, which improved to A in 74%, B in 23% and C in 3%. The ICRS functional evaluation system was III in 82% of cases, and IV in 18% preoperatively, which improved to I in 15% and II in 85%, postoperatively. At the arthroscopic evaluation, the results of the ICRS system were I in 9%, II in 67%, and III in 24%. There was no significant difference between the single chondral defect and chondral defects with a concomitant injury. CONCLUSION: In the treatment of the multiple chondral defects with a concomitant injury, autologous chondrocyte implantation produced similar excellent clinical results to those of a single chondral defect.
Cartilage ; Chondrocytes ; Follow-Up Studies ; Knee ; Osteochondritis Dissecans

PURPOSE: We classified lateral meniscal variants according to types and tear pattern, and compared MR images with arthroscopic findings. MATERIALS AND METHODS: We reviewed 164 consecutive cases (158 patients) of arthroscopic examination for lateral meniscal variants during last ten years. We classified lateral meniscal variants into four types of arthroscopic appearance by modified Watanabe 's classification, and into six tear patterns by modifying O 'Connor 's classification. RESULTS: Regarding four types, 131 cases were complete; 25, incomplete; 4, Wrisberg, and 4, ringshaped. Six tear patterns were as follows: 33 simple horizontal, 21 complicated horizontal, 37 longitudinal, 27 central, 14 complex, and 12 radial. Among 31 cases with central tear or ring-shaped meniscus, we reviewed 25 MR images. Fifteen (60%) MRI 's were interpreted as displaced meniscal tear(bucket handle tear), 7 (28%) as discoid meniscal tear, and other 3 (12%) as simple tear: misinterpretation rate was 72%. Twelve patients (13 cases, 7.9%) had osteochondritis dissecans of lateral femoral condyle: nine patients (10 cases) of them had central tear, two patients (2 cases) had simple horizontal tear, and one patient (1 case) had ring-shaped meniscus. CONCLUSION: MR findings of ring-shaped meniscus or central tear should be differentiated from displaced meniscal tear(bucket-handle tear) considering history of trauma.
Arthroscopy ; Classification ; Humans ; Magnetic Resonance Imaging ; Osteochondritis Dissecans

To evaluate the radiographic characteristics of osteochondritis dissecans (OCD) and useful parameter for predicting mechanical stability, we retrospectively analysed 26 plain radiographic examinations and seven MR imagings in 28 cases of OCD in 24 patients. Typical radiologic findings were osteochondral defect with sclerotic rim of variable thickeness and osteochondral fragment. Sites of osteochondral defect were medial (35.9%) or lateral (32%) femoral chondyle and medial (7.1%) or lateral (25%) side of talar dome. Sclerotic rim was seen in 24 cases (85%) and osteochondral fragments including nine loose bodies were seen in 21 cases (75%). The size of osteochondral defect with unstable fragment (average 2.05cm) and loose body (2.04cm) in the knee joint were similar to, but statistically larger than that with stable fragment (1.35cm). All osteochondral defects were well visualized on MR images. Abnormalities of articular cartilage and effusion in the interface between the parent bone and fragment were seem in five cases of which there were confirmed three unstable cases arthroscopically. We conclude that size of defect may be a good parameter for predicting mechanical stability and MRI may be useful in the diagnosis of OCD and determining the methods of treatment.
Cartilage, Articular ; Diagnosis ; Humans ; Knee Joint ; Magnetic Resonance Imaging ; Osteochondritis Dissecans* ; Osteochondritis* ; Parents ; Retrospective Studies