PURPOSE: Masticatory loading triggers active bone remodeling, altering alveolar bone mineral density (BMD). While dental implants are placed to bear masticatory loading, their influence on changing bone properties has not been fully investigated. Objective of this pilot study was to examine whether the dental implantation has an effect on BMD distribution of bone by comparing dentate, edentulous, and edentulous patients with implants. MATERIALS AND METHODS: Cone beam computed tomography (CBCT) images of 19 partially edentulous patients (Dent), 19 edentulous patients (Edent), and 16 edentulous patients who received implants in the mandible (Edent+Im), were obtained. CBCT images were also obtained from 5 patients within Edent+Im group, before implant placement and after implant loading. Basal cortical bone region of the mandible was digitally isolated. A histogram of gray levels proportional to BMD was obtained to assess mean, histogram standard deviation (HSD), fifth percentile of low and high values (Low5 and High5) of the BMD distribution. Multivariate analysis of variance and paired t-test were used to compare the BMD parameters among the 3 dental status groups and between pre- and post-implantation, respectively. RESULTS: Edentulous patients with implants had significantly greater HSD and High5 values compared to edentulous patients (P < .013). All other comparisons were not significant (P > .097). Mean, HSD, and High5 values significantly increased after receiving implants (P < .022). CONCLUSION The current findings suggested that receiving dental implants promoted oral bone mineralization for edentulous patients. The longitudinal investigation could provide valuable information on understanding the effects of implantation on the behavior of oral bone quality.

PURPOSE: To compare the clinical outcomes of the arthroscopic treatments for popliteal cysts with and without cystectomy. METHODS: PubMed/MEDLINE, EMBASE, KoreaMed, and Cochrane Library were searched from the earliest available date of indexing through August 2016. The methodological quality of all articles was assessed according to the Coleman methodology score (CMS). Studies were grouped according to the surgical method, and a meta-analysis was conducted to identify the unsuccessful clinical outcome and complication rates. RESULTS: Nine studies were included; the mean CMS was 67.33 (standard deviation, 8.75 points). Cystectomy was reported in five studies; cystectomy was not performed in four studies. The odds ratio of unsuccessful clinical outcomes evaluated by Rauschning and Lindgren score was 122.05 (p<0.001) with cystectomy and 58.12 (p<0.001) without cystectomy. The effect size of complications was 0.16 (p<0.001) with cystectomy and 0.03 (p<0.001) without cystectomy. The recurrence rate was 0% with cystectomy and 6.4% without cystectomy. CONCLUSIONS: All the currently available studies showed satisfactory outcomes in both with and without cystectomy groups. However, arthroscopic cystectomy concurrently performed with management of intra-articular lesions was associated with a relatively low recurrence rate and a relatively high incidence of complications.
Abstracting and Indexing as Topic ; Arthroscopy ; Cystectomy ; Incidence ; Knee ; Methods ; Odds Ratio ; Popliteal Cyst ; Recurrence

PURPOSE: The purpose of this study was to evaluate the demographics, clinical features, and outcomes of arthroscopic partial meniscectomy (APM) for isolated medial meniscus horizontal cleavage tears (MMHCTs) in patients under 45 years of age. MATERIALS AND METHODS: We retrospectively reviewed 98 patients (100 knees) under 45 years who underwent APM for MMHCTs. Clinical outcomes were assessed using International Knee Document Committee (IKDC) subjective core, Tegner activity scale, visual analog scale (VAS) pain score, and a question on the symptom relief. RESULTS: 79% were male and 70% had no trauma. The mean symptom duration was 10 months. At arthroscopy, a flap tear was identified in 75%. At a mean of 19-month follow-up, the IKDC subjective score, Tegner activity scale, and VAS pain score were significantly improved compared to the preoperative values (p=0.025, p=0.043, and p=0.032, respectively). While 85% were free of symptoms, 15% had persistent pain. No significant differences in outcomes were observed based on the tear type and the presence of flap tears. No progression or development of radiographic degenerative changes was observed in all knees. CONCLUSIONS: Demographics of MMHCTs under age 45 showed a male dominance and higher frequency of non-traumatic tears. APM was beneficial to symptomatic HCTs in this cohort during the short-term follow-up. Type of HCTs and combined flap tears did not affect clinical outcomes.
Arthroscopy ; Cohort Studies ; Demography ; Follow-Up Studies ; Humans ; Knee ; Lysholm Knee Score ; Male ; Menisci, Tibial ; Retrospective Studies ; Tears ; Visual Analog Scale

There is a greater incidence of discoid meniscus in Asian countries than in Western countries, and bilateral discoid menisci are also common. The discoid meniscus may be a congenital anomaly, and genetics or family history may play a role in the development of discoid menisci. Because the histology of discoid meniscus is different from that of normal meniscus, it is prone to tearing. Individuals with a discoid meniscus can be asymptomatic or symptomatic. Asymptomatic discoid menisci do not require treatment. However, operative treatment is necessary if there are symptoms. Total meniscectomy leads to an increased risk of osteoarthritis. Therefore, total meniscectomy is generally reserved for rare unsalvageable cases. Partial meniscectomy (saucerization) with preservation of a stable peripheral rim combined with or without peripheral repair is effective, and good short-, mid-, and long-term clinical results have been reported.
Asian Continental Ancestry Group ; Diagnosis ; Genetics ; Humans ; Incidence ; Knee ; Osteoarthritis ; Tears

BACKGROUND: The aims of our study were to evaluate the success rate of irrigation and debridement with component retention (IDCR) for acutely infected total knee arthroplasty (TKA) (< 4 weeks of symptom duration) and to analyze the factors affecting prognosis of IDCR. METHODS: We retrospectively reviewed 28 knees treated by IDCR for acutely infected TKA from 2003 to 2012. We evaluated the success rate of IDCR. All variables were compared between the success and failure groups. Multivariable logistic regression analysis was also used to examine the relative contribution of these parameters to the success of IDCR. RESULTS: Seventeen knees (60.7%) were successfully treated. Between the success and failure groups, there were significant differences in the time from primary TKA to IDCR (p = 0.021), the preoperative erythrocyte sedimentation rate (ESR; p = 0.021), microorganism (p = 0.006), and polyethylene liner exchange (p = 0.017). Multivariable logistic regression analysis of parameters affecting the success of IDCR demonstrated that preoperative ESR (odds ratio [OR], 1.02; p = 0.041), microorganism (OR, 12.4; p = 0.006), and polyethylene liner exchange (OR, 0.07; p = 0.021) were significant parameters. CONCLUSIONS: The results show that 60.7% of the cases were successfully treated by IDCR for acutely infected TKA. The preoperative ESR, microorganism, and polyethylene liner exchange were factors that affected the success of IDCR in acutely infected TKA.
Adult ; Aged ; Aged, 80 and over ; Anti-Bacterial Agents/therapeutic use ; Arthroplasty, Replacement, Knee/*adverse effects ; Arthroscopy ; Debridement ; Female ; Humans ; Joint Diseases/microbiology/surgery/therapy ; Knee Joint/microbiology/*surgery ; Knee Prosthesis/microbiology ; Male ; Middle Aged ; Prosthesis-Related Infections/etiology/microbiology/*therapy ; Retrospective Studies ; Therapeutic Irrigation ; Treatment Outcome

Cortriatriatum is a rare congenital cardiac disorder with fibromuscular band (diaphragm) dividing the left atrium (LA) into the proximal and distal parts. Surgical correction of cortriatriatum requires full preoperative evaluation of the structural anomalies including the LA diaphragm and their pathophysiology. In the present case, a 44 year-old lady diagnosed as cortriatriatum underwent surgical correction. Intraoperative three-dimensional transesophageal echocardiography provided detailed information regarding the shape and extent of the LA diaphragm, which had been partially evaluated by preoperative two-dimensional transthoracic and transesophageal echocardiography, and facilitated the intraoperative patient management and surgical decision making.
Adult ; Decision Making ; Diaphragm ; Echocardiography, Transesophageal* ; Heart Atria ; Humans

BACKGROUND: Aspergillosis infection is associated with high morbidity and mortality in liver transplant recipients. This study investigated the prognosis of liver transplant recipients with a pre-operative treatment for paranasal aspergillosis. METHODS: We collected data from 979 cases of patients who underwent liver transplants at the Samsung Medical Center from May 1996 to Feburary 2010. RESULTS: Eight patients were diagnosed with paranasal aspergillosis after functional endoscopic sinus surgery (FESS), before liver transplantation. In these 8 patients, 7 (87.5%) were male, with a mean age of 55 years. All patients had a hepatitis B virus infection, and 6 patients had hepatocellular carcinoma. The mean days from FESS to liver transplantation was 31 (range, 12~47 days) and anti-fungal agents were not used during these periods. All 8 patients were free from a recurrence of aspergillosis after liver transplantation. CONCLUSIONS: Surgical treatment for paranasal aspergillosis in patients prior to liver transplantation does not induce aspergillosis infection after transplantation.
Aspergillosis ; Carcinoma, Hepatocellular ; Hepatitis B virus ; Humans ; Liver ; Liver Transplantation ; Male ; Prognosis ; Recurrence ; Transplants

BACKGROUND: Aspergillosis infection is associated with high morbidity and mortality in liver transplant recipients. This study investigated the prognosis of liver transplant recipients with a pre-operative treatment for paranasal aspergillosis. METHODS: We collected data from 979 cases of patients who underwent liver transplants at the Samsung Medical Center from May 1996 to Feburary 2010. RESULTS: Eight patients were diagnosed with paranasal aspergillosis after functional endoscopic sinus surgery (FESS), before liver transplantation. In these 8 patients, 7 (87.5%) were male, with a mean age of 55 years. All patients had a hepatitis B virus infection, and 6 patients had hepatocellular carcinoma. The mean days from FESS to liver transplantation was 31 (range, 12~47 days) and anti-fungal agents were not used during these periods. All 8 patients were free from a recurrence of aspergillosis after liver transplantation. CONCLUSIONS: Surgical treatment for paranasal aspergillosis in patients prior to liver transplantation does not induce aspergillosis infection after transplantation.
Aspergillosis ; Carcinoma, Hepatocellular ; Hepatitis B virus ; Humans ; Liver ; Liver Transplantation ; Male ; Prognosis ; Recurrence ; Transplants

Ganglion cysts are common lesions that are most often found around the hands and feet. Ganglia around the proximal tibiofibular joint usually occur within the synovial membrane, tendon sheath or peroneal nerve, but they rarely occur within muscle. We report here on a case of a 60-year-old man who complained of an asymptomatic deep seated mass in the proximal part of the right calf that he'd had for more than two years. On magnetic resonance imaging, the lesion appeared as a cystic lesion within the gastrocnemius muscle without communication with the knee joint. To the best of our knowledge, intramuscular ganglion cyst has never been reported in the Korean dermatologic literature.
Foot ; Ganglia ; Ganglion Cysts ; Hand ; Humans ; Joints ; Knee Joint ; Magnetic Resonance Imaging ; Middle Aged ; Muscle, Skeletal ; Muscles ; Peroneal Nerve ; Synovial Membrane ; Tendons

The most common site for the metastasis of osteosarcoma is the lung, and other sites of metastases include the bone, lymph node, pleura and liver. Although unusual extrapulmonary metastases have been reported with the improvement of the therapeutic results for the primary lesions, they are exceptionally rare. We report here on a case of prostatic metastasis of an osteosarcoma of the proximal tibia, and this developed seven years after successful resection, and four years after resection of a pulmonary metastasis. Radical prostatectomy was performed, and histological examination demonstrated metastatic osteosarcoma. To the best of our knowledge, this is the first case of prostatic metastasis of osteosarcoma in the medical literature.
Liver ; Lung ; Lymph Nodes ; Neoplasm Metastasis ; Osteosarcoma ; Pleura ; Prostate ; Prostatectomy ; Tibia