Delayed onset of Corynebacterium simulans infection following open reduction and internal fixation of a trimalleolar fracture.

Surgical site infections (SSIs) following open reduction and internal fixation (ORIF) of ankle fractures can lead to significant disability. This case report emphasizes a unique instance of SSI caused by Corynebacterium simulans, following ORIF of a trimalleolar ankle fracture in a 55-year-old female patient. To our knowledge, this is the first reported case of C. simulans infection after ORIF in the literature. The pathogen was detected after surgical debridement, removal and sonication of the hardware, and identified through matrix assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS) and 16S rRNA gene sequencing. Specific intravenous antibiotic regimen was administered for a total duration of 4 weeks. During the 12th month follow-up, the patient presented no signs of infection and an excellent clinical outcome. This case report underscores the need for alertness regarding atypical pathogens in postoperative complications and the critical role of precise microbial diagnosis in managing rare orthopaedic infections.

Patella Fracture After Total Knee Arthroplasty: A Review.

The management and underlying causes of patellar periprosthetic fractures (PPF) after total knee arthroplasty (TKA) constitute an issue of growing importance given the rising frequency of these procedures. Patella periprosthetic fractures, though relatively rare, pose significant challenges and are a frequent indication for revision surgeries. Despite a decrease in overall incidence, PPFs remain the second most common type of periprosthetic fractures after TKA. Several factors have been identified and associated with patient-specific factors, surgical technique errors, and implant-related causes. Currently extensor apparatus integrity, bone stock, and component loosening are the major concerns and indications for the selective treatment approach. In this study, a thorough review of the existing literature was performed summarizing the epidemiology, clinical manifestation, treatment approach, and functional outcome of PPF. This review aims to underline the significance of such predisposing factors, point out the severity of PPF, and offer insights into the optimal intra- and post-operative management of the patella.

Isolated complete rupture of distal biceps femoris tendon following a motor vehicle accident: A case report and review of the literature.

Isolated complete ruptures of the distal biceps femoris tendon are rare injuries. To our knowledge, very few cases have been reported in English literature. We present the case of a young man who complained of pain on the posterolateral corner of the knee after a motor vehicle accident. Clinical examination and MRI findings revealed a complete rupture at the musculotendinous junction of distal biceps femoris tendon. We describe the surgical treatment performed, and the clinical outcome.

Osteoid osteoma of the patella: a case report.

Though osteoid osteoma is a common primary benign lesion of the bones, intra-articular involvement is rare and poses diagnostic difficulties when it affects middle-aged patients. We present the case of a 51-year-old woman with a 2.5 year history of anterior knee pain that was misdiagnosed as osteochondritis dissecans. Radiological findings were absent, whereas MRI showed a well-circumscribed lesion. A local excisional biopsy was performed and microscopic appearance confirmed diagnosis.

First sternocostal degenerative arthritis with intrarticular fluid collection. A case report.

A rare case with clinical condition of first sternocostal degenerative arthritis with intra-articular fluid collection that developed after long-lasting intense exercise (weight-lifting) for twenty years is reported. Imaging findings and differential diagnoses of the case are presented.

Osteoid osteoma of the patella. Case report and review of the literature.

Osteoid osteoma is a benign, bone-forming tumor. The diaphyses of the long bones are the sites of predilection (at least 50% of all cases occurring in the femur and the tibia). Also this lesion has a male preponderance and the majority of cases present in the second and third decade. We represent an unusual localization of osteoid osteoma in the patella of a 51-year old woman.

Septic arthritis caused by Erysipelothrix rhusiopathiae infection after arthroscopically assisted anterior cruciate ligament reconstruction.

A case of septic arthritis caused by Erysipelothrix rhusiopathiae, after an arthroscopically assisted anterior cruciate ligament (ACL) substitution in a non-immunosuppressed patient is described. An 18-year-old man underwent an ACL reconstruction with a quadruple hamstring graft. Eight days postoperatively, the patient developed fever, knee pain, and effusion without erythema or suppuration. He was readmitted to the hospital with the diagnosis of septic arthritis. The patient's erythrocyte sedimentation rate, C-reactive protein level, and white blood cell count were high. The joint was aspirated and the fluid was sent for cultures that revealed the presence of E rhusiopathiae. E rhusiopathiae is widespread in nature, it is transmitted by direct cutaneous laceration, and it causes septic arthritis, meningitis, endocarditis, and renal failure in immunosuppressed people with poor prognosis. In our case, the infection was treated with arthroscopic lavage and debridement, retention of the graft and hardware, and intravenous antibiotic administration for 6 weeks, followed by oral administration for 16 weeks.

Echinococcal synovitis of the knee joint.

Bone lesions are present in 1% to 2% of cases of hydatid disease. Hydatid synovitis can usually be identified due to secondary extension from the adjacent bone, or infrequently after hematogenous spread. We present an extremely rare case of hydatid synovitis without bony involvement. A 74-year-old man with diagnosed hydatid disease was admitted to our department because of left knee swelling. Neither physical examination nor laboratory studies revealed any remarkable findings. Radiographic evaluation of the knee joint was noncontributory. The patient underwent an arthroscopically assisted synovectomy, and the biopsy revealed an echinococcus contamination. No complications occurred during the postoperative period.