Archives of orthopaedic and trauma surgery
-
Arch Orthop Trauma Surg · Oct 2009
Measurements of ligamentum flavum thickening at lumbar spine using MRI.
As the ligamentum flavum (LF) covers most of the posterolateral part of the lumbar spinal canal, its thickening can be attributed to the development of lumbar canal encroachment. Nevertheless, there have been few reports describing the natural history of the LF. ⋯ The following results were obtained. (1) LF thickness increased with age; however, the increments at L4-5 and L3-4 were larger than one at L2-3 and L5-S1. (2) At L4-5, LF was over 3.0 mm thick in patients in the 20-29 age bracket, and in many of them it was more than 3.5 mm thick. (3) All patients with a thickened LF at L2-3 (>3.0 mm) had very thick LFs at all spinal levels. (4) In elderly patients, there was no correlation between the thickness of LF and the decrease of the disc height. In this study, we concluded that thickening of LF at L4-5 had already started in patients in the 30-39 age bracket and that thickening of the LF was not the buckling of the LF into the spinal canal with disc degeneration. The thickness of LF at L2-3 may serve as an indicator of lumbar spinal canal stenosis at multiple levels.
-
Arch Orthop Trauma Surg · Oct 2009
Randomized Controlled TrialTreatment of lateral epicondilitis using three different local injection modalities: a randomized prospective clinical trial.
To determine the effectiveness of three different local injection modalities in the treatment of lateral epicondilitis. ⋯ In the treatment of lateral epicondilitis, combination of corticosteroid injections with peppering is more effective than corticosteroid injections or peppering injections alone and produces better clinical results.
-
Arch Orthop Trauma Surg · Oct 2009
Consideration of the femoral head cartilage thickness in preoperative planning in bipolar hemiarthroplasty.
Bipolar hemiarthroplasty (BH) is one of the commonly performed orthopedic procedures for the treatment of displaced fractures of the femoral neck. However, despite the common use of the BH, little has been written on preoperative planning for this operation. The purpose of this study was to assess the neglected subject which is about the cognition of the femoral head cartilage in planning a BH. ⋯ The femoral head cartilage should be considered when determining the level of femoral neck resection in order to reduce postoperative LLD when planning a bipolar hemiarthroplasty. Accurate and careful preoperative planning can result in balanced hip reconstruction by equalizing limb lengths and restoring the offsets.
-
Arch Orthop Trauma Surg · Oct 2009
Parecoxib has non-significant long-term effects on bone healing in rats when administered for a short period after fracture.
Selective and non-selective cyclo-oxygenase (COX) inhibitors impair bone healing by inhibiting prostaglandin synthesis. The purpose of this study was to evaluate the long-term effect of parecoxib, a selective COX-2 inhibitor, on bone healing in rats, when it is applied in a pattern similar to clinical treatment patterns, that is, in a high dose and for a short period after bone fracture. ⋯ Parecoxib does not have a significant long-term effect on bone healing in rats, when it is administered in a high dose and for a short period after bone fracture.
-
Arch Orthop Trauma Surg · Oct 2009
Comparative StudyA new distractable implant for vertebral body replacement: biomechanical testing of four implants for the thoracolumbar spine.
Expandable titanium implants for vertebral body replacement in the thoracolumbar spine have been well established in the reconstruction of the anterior spinal column. Load transfer at the bone-implant interface remains a point of concern. The purpose of the study was to compare the performance in axial load transfer from the implant to the vertebral body in four different implants, all of them in clinical use to date. ⋯ The modified end plate design of Synex II was found to perform comparably at least with regard to the compressive performance at the implant-bone interface. The risk of the new implant for collapse into the vertebral body might be reduced when compared to the competitors.