127 research outputs found
Effects on knee kinematics following anterior cruciate ligament repair using semitendinosus and gracilis tendon grafts
No full textSemitendinosus and gracilis tendons are the most commonly used autografts in anterior cruciate ligament (ACL) reconstruction. In this study, we researched the effects of these grafts on knee kinematics. Seventeen patients who had ACL surgery at the GATA Orthopaedics Clinic between 2010 and 2011 were included in this study. The flexion, extension, internal and external rotation of the operated knee and the contralateral healthy knee peak moments were measured and evaluated with Cybex Dynamometer device. Results were evaluated using the paired t-test in SPSS 15.0 and p ≤ 0.05 was considered to be significant. The flexion, extension, internal and external rotation peak moments were decreased in ACL reconstructed knees compared with contralateral healthy knees. Decrease in knee flexion and extension at 60° and 180°/second was found statistically significant compared with the contralateral healthy knee (p < 0.05) in the postoperative first year. Also internal and external rotation of the reconstructed knee declined compared to healthy knee it was found statistically significant. After the use of STG autograft in ACL reconstruction, the knee flexion, extension, internal and external rotation moments decreases. In the postoperative period, rehabilitation programs should be redesigned using this knowledge. Especially in athletes postoperative physical therapy should be applied in meticulously. [Med-Science 2017; 6(2.000): 310-3
Feasibility of diagnosing osteoporosis using routine computed tomography scans for hip fractures: Correlation with histopathological diagnosis of head and neck regions
No full textObjective: The aim of this study was to demonstrate the feasibility of diagnosing osteoporosis through routine computed tomography (CT) by assessing the association between the histopathological assessment of femoral head specimens extracted from patients who underwent surgery for intertrochanteric fractures and the Hounsfield unit (HU) measurements derived from preoperative CT scans.
Methods: Forty-eight patients who presented to our clinic between November 2019 and May 2020 with hip fractures and underwent partial prosthesis fixation were included in this retrospective study. Hounsfield unit measurements were performed on the head and neck regions using dual-energy x-ray absorptiometry (DEXA) and CT scans, respectively. The trabecular ratio per unit area was calculated using the Nikon Imaging Software (NIS-Elements ) program in the pathology laboratory from digitally captured images of the removed head and neck specimens.
Results: The mean HU receiver operating characteristic analysis had a sensitivity of 77% and a specificity of 87%, with a cutoff value of 77.68. There was a moderate correlation between the mean trabecular density and the mean HU of the femoral head (P=0.013, r=0.340). Additionally, there was a significant correlation between the mean HU and the T-score of the head, although this correlation was not found with the maximum–minimum HU. Although there was a significant correlation between trabecular density and mean HU, the correlation coefficient indicated a moderate relationship. This relationship was also observed between the inferior sections of the head and the trabecular density and HU (P=.018). However, no significant correlation was found between the T-score and the trabecular structure of the head (P=.977).
Conclusion: The results of the present study suggest that conventional CT has the potential to serve as a diagnostic tool for osteoporosis and may offer a more precise and accurate method for evaluating the success of intraosseous implants when compared to T-scores without the need for additional tests or procedures.
Cite this article as: Imren Y, Karslioglu B, Dedeoglu SS, Keskin A, Berkay AF, Tekin AC. Feasibility of diagnosing osteoporosis using routine computed tomography scans for hip fractures: Correlation with histopathological diagnosis of head and neck regions. Acta Orthop Traumatol Turc., 2023;57(6):384-388
Reorganization and Risk: Environmental Change and Tribal Land Use in Marginal Landscapes of Southern Jordan
No full textabstract: This research on the early metal ages of the Wadi el-Hasa focuses on the
settlement systems and attempts to explain how social, economic and political
adjustments helped tribal groups survive under natural (i.e., climatic) and anthropogenic
(i.e., land degradation, erosion) stress factors. The shifting of subsistence base from
agropastoral to pastoral their reflections in site and population densities, diversity of site
types, levels of internal complexity and levels of social organization via the presence of
large settlements, like villages, which acted as economic and administrative centers
emerge as risk reduction mechanisms. The cycles of abandonment and resettlement are
evaluated within the concept of social reorganization and such changes are assessed as
parts of economic revitalization attempts. The social changes that emerge from such
shifts are evaluated from the perspective of the scale-free networks model and tested
through statistical methods, such as ANOVA, for spatial and temporal patterns while
patterns of land use and the impacts of changing climate and anthropogenic activities are
evaluated with GIS. Following the dimorphic society and heterarchic social organization
concepts, the discussion emphasizes that tribal groups adjust population density, range
and intensity of activities in marginal landscapes, like the Hasa, in order to prevent
environmental degradation. These patterns may change once these marginal landscapes
are integrated to more complex social organizations. Although this takes place in the
Hasa during the Iron Age, the research results imply that environmental degradation did
not take place possibly due to the continuation of extensive subsistence patterns, along
with the emergence of the long-distance caravan trade as a major economic incentive
Current treatment approaches for ankle ligament injuries: what has changed?
No full textBecause of inadequate and unsuccesful management of ALI, undesired chronic disabilities may unluckily be observed. Treatment of these patients should be planned comprehensive and detailed depending on patients diagnosis, injurys severity and stage. Program should not only be focused on to solve edema. An integrated treatment covering injurys acute and subacute period and a comprehensive algorithm including an early rehabilitation program would provide better recovery times. [Med-Science 2017; 6(1.000): 91-5
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