Archives of orthopaedic and trauma surgery
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Arch Orthop Trauma Surg · Jun 2016
Concomitant posterior cruciate ligament injuries with direct injury-related patellar fractures.
Posterior cruciate ligament (PCL) injuries and direct injury-related patellar fractures have similar causative factors. However, the mechanisms underlying these injuries differ. We aimed to evaluate the incidence and relationship between PCL injuries and direct injury-related patellar fractures. ⋯ Although a PCL injury requiring surgical intervention was extremely rare, 25 % patients who required surgery for patellar fractures presented with a PCL injury. The incidence of a PCL injury was higher in the lower pole, comminuted, displaced, and compressed patellar fractures.
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Arch Orthop Trauma Surg · Jun 2016
Evaluation of the interaction between contact force and decision making on lower extremity biomechanics during a side-cutting maneuver.
The purposes of this study were (1) to compare the effect between contact force [first and second ground reaction force (GRF)] and decision making (anticipation vs unanticipation) on lower extremity biomechanics during a side-cutting maneuver in young soccer players; and (2) to identify which condition is more vulnerable to biomechanical risk factors of the anterior cruciate ligament (ACL) injury. ⋯ The GRF and muscle activities were smaller in the first peak than those in the second peak; however, first peak showed a closer association with biomechanical risk factors of the ACL injury. There were some interactions between contact force and decision making and unanticipation made the first peak more risky to the ACL injury.
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Arch Orthop Trauma Surg · May 2016
Pre-operative templating in total elbow arthroplasty: not useful.
Total elbow arthroplasty (TEA) is a definitive surgical procedure for treating rheumatoid arthritis and (posttraumatic) osteoarthritis of the elbow and is also useful in comminuted elbow fractures. Pre-operative digital templating may theoretically improve the surgical implantation of TEA, but reliability and predictive values of templating are unknown. The aim of this study was to determine the intra- and inter-observer reliability and the validity of pre-operative digital templating for TEA. ⋯ Pre-operative digital templating for TEA is a reliable method to plan implant sizes. However, the predictive value is low.
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Arch Orthop Trauma Surg · May 2016
Comparative StudyDecreased femoral periprosthetic bone mineral density: a comparative study using DXA in patients after cementless total hip arthroplasty with osteonecrosis of the femoral head versus primary osteoarthritis.
Trabecular properties in osteonecrosis of the femoral head (ONFH) are altered for bone volume and structure in the femoral head and proximal femoral canal. We analysed the periprosthetic bone mineral density (BMD) as a correlate to bony ingrowth in patients with ONFH who received a cementless THA. ⋯ An altered periprosthetic bone stock in the proximal femur in patients with prior ONFH might be a possible risk factor for premature loosening of the femoral stem in THA. Surgeons need to consider coating and fixation philosophy of cementless implants when choosing the right stem for patients with ONFH.
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Arch Orthop Trauma Surg · May 2016
Randomized Controlled Trial Comparative StudyComparison of three different incision techniques in A1 pulley release on scar tissue formation and postoperative rehabilitation.
The optimal surgical approach for trigger finger release remains controversial in hindsight of postoperative rehabilitation as well as scar tissue formation. In this study, we comparatively evaluated the outcome of three different types of skin incision by employing the "Disability of the Arm Shoulder and Hand Score" (DASH) and by quantitative ultrasound measurements of scar tissue volume. ⋯ There is no clear benefit of one incision technique over another. However, based on scar volume parameters, the significant faster recovery in the first month and the surgical ease of exposure and wound closure inclines us to favor the longitudinal incision (group 3) in future patients.