A total of 15 revision total knee arthroplasties in infected cases had been followed for an average 31.4 moths(ranging between 1 year 4 months and 10 years) from 1983 to 1992 at Kyung Hee University Hospital. Average age of the patients was 60 years old (ranging between 27 and 80 years). Of the total 15 infected total knee arthroplasties, original diagnosis was osteoarthritis in 11 patients, rheumat,oid arthritis in three patients, and tuberculosis in one patient. In nine of 15 patients, causative orgamisms were not found. But such clinical evidences as increased erythrocyte sedimentation rate, draining sinus, local heating, intraoperative findings, and pathologic findings demonstrated the infection of total knee arthroplasty. In 15 cases, seven cases were early infection and eight were late infection. Two cases of tuberculosis were diagnosed with intraoperative pathology. The majority of prosthetic loosening was found on the tibial side. Several methods of treatment were applied to the infected cases. One-stage or two-stage reimplantation were used in seven cases, knee fusion in six cases, and conservative treatment was used in two cases. Average period from initial total knee arthroplasty to prosthesis removal of fusion is 20. 3 months(ranging between 11 months and 64 months). In cases of two stage reimplantation, antibiotic-mixed bone cement was implanted after removal of prosthesis to increase the local concentration of antibiotics. The average interval from prosthesis removal to revision in 4 cases of two stage reimplantation was 9.9 weeks(ranging between 43 days and 122 days). All patients were evaluated according to the knee rating Scale of Hospital for Special Surgery. Prior to revision operation in 7 reimplantation cases, the average knee score was 50.1 points, and the average range of motion was 70°. After revision, the average knee score was 81. 1 points. The average range of motion was 98°. Complete union was obtained in all cases of knee fusion. Even though at the time of follow up there has been no recurrence of infection after revision or fusion, long term follow up is needed. Interrmittent knee joint swelling and pus drainage were observed in conservatively treated cases.
Anti-Bacterial Agents ; Arthritis ; Arthroplasty ; Arthroplasty, Replacement, Knee ; Blood Sedimentation ; Diagnosis ; Drainage ; Follow-Up Studies ; Heating ; Hot Temperature ; Humans ; Knee ; Knee Joint ; Osteoarthritis ; Pathology ; Prostheses and Implants ; Range of Motion, Articular ; Recurrence ; Replantation ; Suppuration ; Tuberculosis

Calcium Pyrophosphate ; metabolism ; Cartilage, Articular ; metabolism ; pathology ; Chondrocalcinosis ; diagnostic imaging ; metabolism ; pathology ; surgery ; Diagnosis, Differential ; Female ; Gout ; pathology ; Humans ; Knee Joint ; diagnostic imaging ; metabolism ; pathology ; Male ; Menisci, Tibial ; metabolism ; pathology ; Middle Aged ; Osteoarthritis ; etiology ; pathology ; Radiography

OBJECTIVE: To retrospectively evaluate the relationship between T2 values of pre- and post-contrast magnetic resonance (MR) images of femoral cartilage in patients with varying degrees of osteoarthritis. MATERIALS AND METHODS: A total of 19 patients underwent delayed gadolinium-enhanced MRI of cartilage. Six regions of interest for T2 value measurement were obtained from pre- and post-contrast T2-weighted, sagittal, multi-slice, multi-echo, source images in each subject. Regions with modified Noyes classification grade 2B and 3 were excluded. Comparison of T2 values between pre- and post-contrast images and T2 values among regions with the grade 0, 1 and 2A groups were statistically analyzed. RESULTS: Of a total of 114 regions, 79 regions showing grade 0 (n = 46), 1 (n = 18), or 2A (n = 15) were analyzed. The overall and individual T2 values of post-contrast images were significantly lower than those of pre-contrast images (overall, 35.3 +/- 9.2 [mean +/- SD] vs. 29.9 +/- 8.2, p < 0.01; range of individual, 28.9-37.6 vs. 27.1-36.4, p < 0.01). Pearson correlation coefficients showed a strong positive correlation between pre- and post-contrast images (rho-Pearson = 0.712-0.905). T2 values of pre- and post-contrast images of the grade 0 group were significantly lower than those of the grade 1/2A group (pre T2, p = 0.003; post T2, p = 0.006). CONCLUSION: T2 values of the femoral cartilage of the knee joint are significantly lower on post-contrast images than on pre-contrast images. Furthermore, these T2 values have a strong positive correlation between pre- and post-contrast images.
Adult ; Aged ; *Cartilage, Articular/pathology ; Contrast Media/*diagnostic use ; Female ; Femur ; Gadolinium DTPA/diagnostic use ; Humans ; Knee Joint ; Magnetic Resonance Imaging/*methods ; Male ; Middle Aged ; Osteoarthritis, Knee/*diagnosis/pathology ; Retrospective Studies

The objectives of this study were to assess the ultrasonographic (US) findings in patients with knee osteoarthritis (OA) with pes anserinus tendinitis or bursitis (PATB) syndrome and to determine the correlation between the US findings and the response to local corticosteroid injection. We prospectively studied 26 patients with knee OA with clinically diagnosed PATB syndrome. A linear array 7 MHz transducer was used for US examination of the knee. Seventeen patients were injected locally with tramcinolone acetonide in the anserine bursa area. Response to local corticosteroid injection was evaluated by pain visual analog scale (VAS), Western Ontario and MacMaster (WOMAC) osteoarthritis index and Global patient/physician assessment using Likert scale. On US examination, only 2 patients (8.7%) showed evidence of PATB. Pain VAS, WOMAC pain index and WOMAC physical function index improved significantly after corticosteroid injection. Global patient assessment revealed that 2 patients showed best response, 6 good, 1 fair, 8 the same, and none worse. It is of note that the 2 patients who showed the best response were those who showed US evidence of PATB. This finding shows that US can serve as a useful diagnostic tool for guiding treatment in PATB syndrome of OA patients.
Adrenal Cortex Hormones/*pharmacology ; Aged ; Bursitis/ultrasonography ; Female ; Glucocorticoids/pharmacology ; Humans ; Knee/*pathology ; Male ; Middle Aged ; Osteoarthritis, Knee/*diagnosis/drug therapy/*ultrasonography ; Pain ; Pain Measurement ; Research Support, Non-U.S. Gov't ; Tendinitis/pathology/ultrasonography ; Treatment Outcome

Osteoarthritis (OA) is a chronic joint disease that involves degeneration of articular cartilage, limited intra-articular inflammation manifested by synovitis and changes in the subchondral bone. After the articular cartilage's stability and complex structure in the framework of pressure-proof were destruct, the ability to repair by itself was weak. Therefore early diagnosis in the treatment of osteoarthritis is a focal ponit. This paper addressed on the characteristics of diagnosis of OA in the relevant objective diagnostic methods.
Adult ; Aged ; Bone Density ; physiology ; Bone and Bones ; diagnostic imaging ; pathology ; Calcification, Physiologic ; Cartilage, Articular ; diagnostic imaging ; pathology ; Female ; Humans ; Joints ; diagnostic imaging ; pathology ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Osteoarthritis ; diagnosis ; epidemiology ; Osteoarthritis, Knee ; diagnosis ; diagnostic imaging ; Radiography ; Radionuclide Imaging ; Synovial Membrane ; diagnostic imaging ; pathology ; Ultrasonography

OBJECTIVE: We wanted to assess the role of the popliteal lymph nodes for differentiating rheumatoid arthritis (RA) from osteoarthritis (OA), and we also wanted to investigate the relationship between the popliteal lymph nodes and the inflamed synovial volume (ISV) by using contrast enhanced (CE), fat suppressed, three dimensional-fast spoiled gradient echo (3D-FSPGR) MR imaging. MATERIALS AND METHODS: Contrast enhanced 3D-FSGPR MR imaging of 94 knees (21 with RA and 73 with OA) was analyzed. A lymph node was defined as being 'observed' if it could be seen in at least two planes of the three orthogonal reformatted planes. The number of observed lymph nodes, the mean of the smallest dimension of each lymph node and the existence of central fatty change were recorded. The OA group was graded according to the ISV calculated by a segmentation method: grade I was < 20 cm3; grade II ranged from 20 cm3 to 40 cm3; and grade III was > 40 cm3. Statistical analysis of the number and the mean size of the popliteal lymph nodes among the four groups (the RA group and the grade I-III OA groups) was performed. RESULTS: The prevalence of the observed popliteal lymph nodes was significantly different between all the OA groups or between the grade III OA group and the RA group (p < 0.0001, 0.0001, respectively). The popliteal lymph node was observed in 32 out of 73 OA cases, whereas it was visible in all of the 21 RA cases. The number (mean+/-standard deviation) of lymph nodes in the grade I OA group, the grade II OA group, the grade III OA group and the RA group was 1.2+/-0.4, 1.2+/-0.4, 1.3+/-0.5, and 2.7+/-1.1, respectively. The mean size (mean+/-standard deviation) of the lymph nodes was 3.8+/-1.0 mm, 3.6+/-1.1 mm, 4.1+/-0.8 mm, and 5.4+/-1.3 mm, respectively. The incidence of central fatty changes was significantly lower in the RA group than in all the OA groups and the grade III OA group. When differentiating RA from OA, and when the differentiation was confined to the RA group and grade III OA group, respectively, the criteria of the number of lymph nodes, their size, their central fatty change and a combination of all these three criteria showed statistical significance (Az values for the former were 0.869, 0.847, 0.776, and 0.942; Az values for the latter were 0.855, 0.799, 0.712, and 0.916). The number and mean size of the lymph nodes correlated with the ISVs (r = 0.49, p < 0.001; 0.50, 0.001, respectively). CONCLUSION: The number, size and central fatty changes in the popliteal lymph nodes observed on the MR images might serve as simple and useful markers in differentiating RA disease from OA disease. These markers would be particular helpful in cases of severe synovial enhancement where the ISVs of both RA and OA overlap. The number and mean size of the lymph nodes also correlated well with the ISV.
Adult ; Aged ; Arthritis, Rheumatoid/*diagnosis ; Diagnosis, Differential ; Female ; Humans ; Inflammation ; Knee ; *Lymph Nodes ; Magnetic Resonance Imaging/*methods ; Male ; Middle Aged ; Osteoarthritis/*diagnosis ; Research Support, Non-U.S. Gov't ; Retrospective Studies ; Synovial Membrane/*pathology

OBJECTIVETo investigate the effects of Chinese traditional medicine for the treatment of osteoarthritis of knee joint at early stage, as well as to observe the changes of articular cartilage in MRI before and after the treatment.

METHODSSixty patients were divided into two groups according to Doll's law, 32 patients in the treatment group (6 male and 26 female, with an average age of 52.2 years, ranging from 43 to 65 years, 40 joints), 28 patients in the control group (5 male and 23 female, with an average age of 54.4 years, ranging from 42 to 65 years, 33 joints). The patients in the test group were given Chinese traditional medicine orally, and patients in the control group were given celecoxib and the glucosamine hydrochloride orally for three months. MR scan and ISOA score were given respectively before and after treatment. After the treatment, the articular cartilage changes of the weight bearing area were observed to evaluate the therapeutic effects.

RESULTSAll the patients were followed up ranging from 13 to 17 months, with an average of 15.3 months. According to MRI evaluation, 15 joints got an excellent result, and 17 joints got a good result in the treatment group, the total excellent and good rate was 80.0%; and in the control group, above data were 8, 11 and 57.6% respectively. The average ISOA score of the treatment group after treatment was 0.35 +/- 0.16, and in the control group was 3.68 +/- 0.18. There was significant differences between the two groups of ISOA score (t = 6.94, P<0.05).

CONCLUSIONChinese traditional medicine can significantly alleviate or inhibit the cartilage degeneration of knee osteoarthritis at early stage and improve joint function. It had significant clinical effects.

Adult ; Aged ; Cartilage, Articular ; drug effects ; pathology ; Female ; Follow-Up Studies ; Humans ; Magnetic Resonance Imaging ; Male ; Medicine, Chinese Traditional ; Middle Aged ; Osteoarthritis, Knee ; diagnosis ; drug therapy ; pathology ; therapy ; Treatment Outcome