Archives of orthopaedic and trauma surgery
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Arch Orthop Trauma Surg · Jun 2015
Case ReportsConservative treatment after failure of internal fixation for periprosthetic femoral fractures: a report of two cases.
Osteosynthesis using compression or locking plate following indirect fracture reduction and using a minimally invasive technique has been recommended for the surgical treatment of Vancouver B1 and C periprosthetic femoral fractures. Recent advancements in fracture healing emphasize the significance of the type of mechanical stability depending on fracture patterns and the importance of the preservation of the blood supply around the fracture sites. ⋯ Bone healing was successfully achieved in both cases as a result of the preservation of the tissues and the biology around the fractures during the initial operations. We present our experiences of conservative management together with the preservation of the biology around the fracture site, as viable alternative options for difficult and traumatic revision surgery in cases of failed periprosthetic fracture fixation procedures.
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Function and kinematics following unicondylar knee arthroplasty (UKA) have been reported to be close to the native knee. Gait, stair climbing and activities of daily living expose the knee joint to a combination of varus and valgus moments. Replacement of the medial compartment via UKA is likely to change the physiologic knee stability and its ability to respond to varus and valgus moments. It was hypothesized that UKA implantation would stiffen the knee and decrease range of motion in the frontal plane. ⋯ In UKA, the compressive anatomy is replaced by much stiffer components. This lack of medial compression and relative overstuffing leads to a tighter medial collateral ligament. This drives the trend towards a stiffer joint as documented by a decrease in frontal plane range of motion. Overstuffing should strictly be avoided when performing UKA.
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Arch Orthop Trauma Surg · Jun 2015
Open debridement and prosthesis retention is a viable treatment option for acute periprosthetic joint infection after total knee arthroplasty.
Open debridement with prosthesis retention (ODPR) has been considered as a reasonable treatment option for acute periprosthetic joint infection (PJI) following total knee arthroplasty (TKA). However, multiple recent studies have challenged this contention. This study was undertaken to determine the success rate of ODPR, whether the success rate was affected by the ODPR timing or by the microorganisms. ⋯ ODPR should be considered as a viable treatment option for acute PJI following TKA. The promptness of ODPR is of paramount importance for success of ODPR, rather than the causative organism type or virulence.
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Arch Orthop Trauma Surg · Jun 2015
Case ReportsEvaluation and analysis of graft hypertrophy by means of arthroscopy, biochemical MRI and osteochondral biopsies in a patient following autologous chondrocyte implantation for treatment of a full-thickness-cartilage defect of the knee.
Graft hypertrophy represents a characteristic complication following autologous chondrocyte implantation (ACI) for treatment of cartilage defects. Although some epidemiological data suggest that incidence is associated with first-generation ACI using autologous chondrocyte implantation, it has also been reported in other technical modifications of ACI using different biomaterials. Nevertheless, it has not been described in autologous, non-periosteum, implant-free associated ACI. ⋯ No expression of collagen type X (a sign of chondrocyte hypertrophy), only slight changes of the subchondral bone and a nearly normal cell-matrix ratio suggest that tissue within the hypertrophic area does not significantly differ from intact and high-quality repair tissue and therefore seems not to cause graft hypertrophy. This is in contrast to the assumption that histological hypertrophy might cause or contribute to an overwhelming growth of the repair tissue within the transplantation site. Data presented in this manuscript might contribute to further explain the etiology of graft hypertrophy following ACI.
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Arch Orthop Trauma Surg · Jun 2015
Case ReportsBilateral locked anterior shoulder dislocation in a bench-pressing athlete: case report.
Chronic bilateral anterior shoulder dislocation is a rare entity. Treatment options range from conservative to surgical reduction. ⋯ Upon presentation, the patient had no pain with functional range of motion so he refused surgery. Conservative treatment could be an acceptable alternative to surgical intervention if pain and functional status are satisfactory.