Chondroblastoma is a rare benign tumor that produces giant cells and cartilage matrix. The tumor occurs in people between 10 and 25 years with slightly higher incidence in males. The condition occurs in the proximal epiphysis of the tibia and humerus, distal epiphysis of the femur, but its occurrence in the talus is relatively rare, accounting for 4% of the total number of chondroblastoma cases. Chondroblastoma is often misdiagnosed as a primary aneurysmal bone cyst, giant cell tumor, chondromyxoid, and lesion of a secondary aneurysmal bone cyst by fibrous dysplasia. The most commonly used surgical method for chondroblastoma is broad curettage with bone grafting. In general, an aneurysmal bone cyst is associated with a second degree chondroblastoma, which is approximately 20%. Chondroblastoma of the talus and secondary aneurysmal bone cysts can be misdiagnosed as primary aneurysmal bone cysts. This paper reports a case of a young male patient with chondroblastoma of the talus, which was initially misdiagnosed as an aneurysmal bone cyst with involvement of the talo-navicular joint.
Aneurysm ; Bone Cysts ; Bone Cysts, Aneurysmal ; Bone Transplantation ; Cartilage ; Chondroblastoma ; Curettage ; Epiphyses ; Femur ; Giant Cell Tumors ; Giant Cells ; Humans ; Humerus ; Incidence ; Joints ; Male ; Methods ; Talus ; Tibia

Distal humerus fractures require stable fixation and early joint motion, similar to other intra-articular fractures, but are difficult to treat adequately because of the anatomical complexity, severe comminution, and accompanying osteoporosis. In most cases, surgical treatment is performed using two supporting plates. Plate fixation can be divided into right angle plate fixation and parallel plate fixation. In addition, depending on the type of fracture, surgical procedures can be performed differently, and autologous bone grafting can be required in the case of severe bone loss. The elbow joint is vulnerable to stiffness, so it is important to start joint movement early after surgery. Postoperative complications, such as nonunion, ulnar nerve compression, and heterotopic ossification, can occur. Therefore, accurate and rigid fixation and meticulous manipulation of soft tissues are required during surgery.
Bone Transplantation ; Elbow Joint ; Humerus ; Intra-Articular Fractures ; Joints ; Ossification, Heterotopic ; Osteoporosis ; Postoperative Complications ; Rehabilitation ; Ulnar Nerve ; Ulnar Nerve Compression Syndromes

Joint contracture in chronic graft-versus-host disease (cGVHD) is refractory to treatment, and tends to deteriorate gradually over time. There is scant clinical research focusing on timing and intensity of rehabilitation on joint contractures in children with sclerodermoid cGVHD after hematopoietic stem cell transplantation. We retrospectively reviewed rehabilitative therapeutic effects in 6 children with sclerodermoid cGVHD, whose clinical records documented their condition, before and after rehabilitation therapies. Three children who started treatment within a mean of 2 months after the onset of joint symptoms, and who underwent home-based exercise twice daily for 30 minutes showed more prominent improvement in range of motion compared with the other 3 children, who started rehabilitation therapy later than 6 months after onset of joint symptoms, without regular home-based exercise.
Child ; Contracture ; Graft vs Host Disease ; Hematopoietic Stem Cell Transplantation ; Humans ; Joints ; Range of Motion, Articular ; Rehabilitation ; Retrospective Studies ; Therapeutic Uses

Pigmented villonodular synovitis (PVNS) is a rare benign condition that is locally aggressive and may destructively invade the surrounding soft tissues and bone causing functional loss of the joint and the limb. The knee is the most affected joint (range, 28% to 70%) but involvement of the bone is not a common feature seen at this site. We present a rare case of diffuse PVNS of the knee associated with subchondral cyst of the lateral femoral condyle. This posed a diagnostic dilemma because of bone invasion. The radiological image of synovitis was pathognomonic of PVNS but etiology of the osteolytic lesion was confirmed only on histopathology. The large osteochondral defect was eventually managed in a staged manner with bone grafting and osteochondral autograft transfer.
Autografts ; Bone Cysts ; Bone Transplantation ; Cartilage ; Extremities ; Joints ; Knee ; Synovitis ; Synovitis, Pigmented Villonodular

A 49-year-old female patient suffered a suspicious scalding burn in her right hand and forearm during a seizure, and visited the clinic 16 hours after injury without appropriate initial treatment. The wound was covered with multiple bullae, was cold and pale, and the extension and flexion functions were decreased. The intrafascial pressure was measured as 19~95 mmHg (mean 46.9), confirming compartment syndrome. The pressure was improved following fasciotomy to 23~32 mmHg (mean 27); escharectomy, split thickness skin grafting and partial ostectomy was then performed, and an abdominal flap operation was conducted. The patient underwent a delayed procedure 14 days after the operation, and on the 18th day, subcutaneous fat and fascia tissues from the subcutaneous layer were removed from the skin; after sculpturing, split thickness skin grafting was performed. On the 21st day after flap separation, stump revisions were performed. The patient is currently undergoing rehabilitation; the metacarpophalangeal joint exhibits a normal range of motion, and the proximal interphalangeal joint has a range of motion of 30~45°. The abdominal flap operation was performed for soft tissue defects in the extensor tendon and bone exposure. Thus, various long-term processes were avoided, and by implementing a short operation time and low-cost surgery, relatively quick rehabilitation treatment could be initiated.
Burns* ; Compartment Syndromes ; Fascia ; Female ; Fingers* ; Forearm ; Hand ; Humans ; Joints ; Metacarpophalangeal Joint ; Middle Aged ; Range of Motion, Articular ; Reference Values ; Rehabilitation ; Seizures ; Skin ; Skin Transplantation ; Subcutaneous Fat ; Tendons ; Wounds and Injuries

BACKGROUND: Liver transplantation (LT) is the treatment of choice for hepatocellular carcinoma (HCC). The aim of this study was to investigate the recurrence rate of HCC after LT and prognostic factors for recurrence by comparing LT with non-transplanted resection. METHODS: The participants were 338 patients who underwent LT between 1996 and 2012 at Seoul National University Hospital (LT group) and 520 HCC patients who underwent partial hepatectomy between 1995 and 2006 (control group, non-LT group). RESULTS: In the LT group, 68 of 338 patients (19.8%) showed relapse, and the recurrence rate was lower than that in the non-LT group (64.9%, 357/520, p < .001). Stratification analysis by American Joint Committee on Cancer (AJCC) stage showed that the stage I-II LT group had a lower recurrence rate than the non-LT group. Univariate comparative analysis demonstrated that multiplicity of tumor, tumor size, gross type, Edmondson- Steiner (ES) nuclear grade, extent of tumor, angioinvasion, AJCC stage, Milan criteria, University of California at San Francisco criteria on explant pathology (all p < .001), positive expression of cytokeratin 19 (p = .002), and preoperative α-fetoprotein (AFP) (p < .001) were predictors of tumor recurrence. In multivariate analysis, LT, preoperative AFP, multiplicity of tumor, extent of tumor, size of tumor, and ES nuclear grade were independent prognostic factors. CONCLUSIONS: LT might have a protective effect against the late recurrence of stage I-II HCC compared to non-LT, and the prognostic factors for recurrence were similar to previously well-known prognostic factors for HCC.
California ; Carcinoma, Hepatocellular* ; Hepatectomy* ; Humans ; Joints ; Keratin-19 ; Liver Transplantation* ; Liver* ; Multivariate Analysis ; Pathology ; Prognosis* ; Recurrence ; Seoul

Adipose-derived stromal cells (ASCs) have been investigated as a cell source for tissue regeneration. The purpose of this study was first to confirm if medial meniscectomy induces osteoarthritis (OA) in goats within a relative short period of time, and more importantly, to investigate if systemic treatment with immunosuppressive drugs is necessary in intra-articular ASC xenotransplantation for successful regeneration of articular cartilage and prevention of joint inflammation. Eight Korean native black goats 1–2 years of age underwent medial meniscectomy. To evaluate the gross and histological appearance of articular cartilage, knee joints were re-exposed by a medial parapatellar incision at 8 weeks. After macroscopic scoring of gross appearance, cartilage biopsy specimens 6 mm in diameter were obtained from the femoral condyle in four goats. The goats were injected with single intra-articular dose of 7×10₆ human ASCs (hASCs) 7 days after the second arthrotomy. Four animals were treated with daily injections of cyclosporin A 10 mg/kg for 7 days, followed by a reduced dose of 5 mg/kg for another 7 days, while other 4 animals did not receive immunosuppressive therapy. All animals were sacrificed for analysis 8 weeks after injection of hASCs. OA was successfully induced 8 weeks after medial meniscectomy. Eight weeks after injection of hASCs, various signs of articular cartilage regeneration were observed. There were no significant macroscopic and histological differences between goats treated with cyclosporine and untreated goats. Interleukin-1β and tumor necrosis factor-α level from synovial fluid did not differ between cyclosporine-treated and untreated goats. The results indicate that immunosuppressive therapy did not influence the result of ASC xenotransplantation to treat OA.
Animals ; Biopsy ; Cartilage ; Cartilage, Articular ; Cyclosporine ; Goats* ; Humans ; Inflammation ; Joints ; Knee Joint ; Necrosis ; Osteoarthritis* ; Regeneration ; Stromal Cells* ; Synovial Fluid ; Transplantation, Heterologous*

The optimal treatment for combined osteochondritis dissecans (OCD) with considerable bony defect of the lateral femoral condyle (LFC) and torn discoid lateral meniscus is unclear. We present a case of a 15-year-old female who was a gymnast and had a large OCD lesion in the LFC combined with deficiency of the lateral meniscus. The patient underwent the "one-step" technique of osteoperiosteal autologous iliac crest graft and lateral meniscus allograft transplantation after a failure of meniscectomy with repair at another hospital. Twenty-four months postoperatively, clinical results were significantly improved. Follow-up imaging tests and second-look arthroscopy showed well incorporated structured bone graft and fibrous cartilage regeneration as well as stabilized lateral meniscus allograft. She could return to her sport without any pain or swelling. This "one-step" surgical technique is worth considering as a joint salvage procedure for massive OCD lesions with torn discoid lateral meniscus.
Adolescent ; Allografts ; Arthroscopy ; Autografts ; Cartilage ; Female ; Follow-Up Studies ; Humans ; Joints ; Knee ; Menisci, Tibial ; Osteochondritis Dissecans ; Regeneration ; Sports ; Tears ; Transplantation ; Transplants

PURPOSE: Finger immobilization by Kirschner-wire (K-wire) insertion may be used for postoperative stability after release of scar contracture. K-wire insertion through the phalangeal bone requires drilling and can result in joint and/or tendon injury or pain during wire removal. To prevent these problems, we inserted the K-wire through the soft tissue. METHODS: Seventy-five fingers of 45 patients who underwent reconstruction of scar contracture of the fingers were immobilized by K-wire. After contracture release, just before skin grafting and/or local flap surgery, in full extension of the finger, a K-wire was inserted manually from the fingertip to the proximal phalanx or metacarpal bone through the soft tissue under the phalangeal bone, along the longitudinal axis on the volar side. If the graft site did not have enough soft tissue or the K-wire was felt on the recipient bed, the K-wire was inserted on the dorsal side of the finger. K-wires were manually removed two weeks after surgery. RESULTS: In most cases, the time to insert the K-wire was 2-3 minutes per finger, and immobilization and stability was maintained for two weeks. In two fingers, the K-wire came out prematurely during wound care; this did not affect the overall outcome. There were no complications due to K-wire insertion or pain during removal. CONCLUSION: Finger immobilization by K-wire insertion through soft tissue is simple to perform, leads to stable immobilization, has no adding procedure. This method is useful for temporary finger immobilization in full extension.
Axis, Cervical Vertebra ; Cicatrix* ; Contracture* ; Fingers* ; Humans ; Immobilization* ; Joints ; Skin Transplantation ; Tendon Injuries ; Transplants ; Wounds and Injuries

PURPOSE: Olecranon nonunion after surgical management is relatively rare, but it leads to limitation of motion of joint or instability. This retrospective study was conducted in order to analyze the cause and result of treatment. MATERIALS AND METHODS: We analyzed 11 cases treated for nonunion of olecranon fractures. Nonunion was classified according to the spot of the lesion and the extent of articular surface damage. Evaluation was performed using Mayo elbow performance score (MEPS), Oxford elbow score (OES), Disabilities of the Arm, Shoulder and Hand (DASH) scores, and the range of motion. RESULTS: According to the spot of the lesion and the extent of articular surface damage, nonunion was categorized as IA (2 cases), IIA (5 cases), and IIIA (4 cases). One case of IA underwent nonunion fragment excision and the remaining cases were treated by bone grafting. A plate was used in seven cases and the other three cases had both plate and tension band wiring fixation. All nonunions finally became union. The 11 patients with one year follow-up had average MEPS of 87.7 points (range: 60-100 points), average OES of 43.2, and average DASH score of 18.8 points. Complications included limitation of motion (2 cases) and ulnar nerve symptoms (3 cases). CONCLUSION: Bone grafting and fixation by plate may be beneficial. In addition, excision can be useful in type I.
Arm ; Bone Transplantation ; Elbow ; Follow-Up Studies ; Hand ; Humans ; Joints ; Olecranon Process* ; Range of Motion, Articular ; Retrospective Studies ; Shoulder ; Ulnar Nerve