Archives of orthopaedic and trauma surgery
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Arch Orthop Trauma Surg · Dec 2011
Cross-linked ultra-high-molecular weight polyethylene liner and ceramic femoral head in total hip arthroplasty: a prospective study at 5 years follow-up.
Recent data indicate that enhanced wear resistance can be obtained with new cross-linked ultra-high-molecular weight polyethylene (CL-UHMWPE) liners, in comparison with previous-generation liners. The current prospective, cohort study was undertaken to analyse whether the use of a new CL-UHMWPE (Rexpol) results in a lower wear rate than ultra-high-molecular weight polyethylene (UHMWPE) in a group of similar patients undergoing total hip arthroplasty (THA). This study provides the first clinical data with this particular CL-UHMWPE. ⋯ The use of CL-UHMWPE significantly reduced the risk of polyethylene wear in patients undergoing THA with biconical threaded cups and ceramic femoral heads. Further follow-up is needed to determine how this will influence long-term outcomes.
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Arch Orthop Trauma Surg · Dec 2011
Case ReportsInsufficiency femoral intertrochanteric fractures associated with greater trochanteric avulsion fractures.
Insufficiency fractures are often overlooked, particularly when associated with greater trochanteric avulsion fractures. Here, we report magnetic resonance imaging (MRI) findings of insufficiency femoral intertrochanteric fractures associated with greater trochanteric avulsion fractures treated by internal fixation. We identified 8 patients (3 men and 5 women; age range, 58-92 years old). ⋯ There were no complications regarding the operation itself. Insufficiency femoral intertrochanteric fractures associated with greater trochanteric avulsion fractures were often overlooked. We successfully treated these fractures by internal fixation.
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Arch Orthop Trauma Surg · Nov 2011
Anterior interosseous nerve syndrome: retrospective analysis of 14 patients.
The anterior interosseous nerve (AIN) is a only motor nerve innervating the deep muscles of the forearm. Its compression is rare. We present a retrospective analysis of 14 patients with an AIN syndrome with a variety of clinical manifestations who underwent operative and conservative treatment. ⋯ AIN syndrome can have different clinical manifestations. If no signs of spontaneous recovery appear within 12 weeks, operative treatment should be performed.
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Arch Orthop Trauma Surg · Nov 2011
Autologous bone cylinder transplantation with cannulated screw re-stabilisation: a new treatment option for delayed fracture healing of the femoral neck.
Delayed fracture healing and non-unions of the femoral neck after lag screw osteosynthesis occur particularly in multiply injured young patients, and then surgical revision is often required. Currently no evidence-based treatment guidelines exist and therapeutic options include both hip arthroplasties and femoral head-maintaining operations. Here we report on young patients with delayed fracture healing of the femoral neck. Patients underwent revision surgery by autologous bone cylinder transplantation with mechanical re-stabilisation by cannulated lag screws. ⋯ These data show that in this difficult-to-treat subset of young patients with delayed fracture healing of the femoral neck, autologous bone cylinder transplantation with mechanical re-stabilisation should be considered as a promising surgical revision strategy before hip arthroplasty.
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Arch Orthop Trauma Surg · Nov 2011
The influence of foot geometry on the calcaneal osteotomy angle based on two-dimensional static force analyses.
Malalignment of the hindfoot can be corrected with a calcaneal osteotomy (CO). A well-selected osteotomy angle in the sagittal plane will reduce the shear force in the osteotomy plane while walking. The purpose was to determine the presence of a relationship between the foot geometry and loading of the calcaneus, which influences the choice of the preferred CO angle. ⋯ Foot geometry, in particular the relative foot heights is a determinant for the individual angle in performing the sliding calcaneal osteotomy. It is recommended to take into account the foot geometry (arch) when deciding on the CO angle for hindfoot correction.