Elle Kaldırma Hareketinde Kutu Boyutunun L5/S1 Eklemine Etkisinin İncelenmesi

Yıl 2023, Cilt: 4 Sayı: 1, 1 - 10, 26.06.2023

Melih Canlıdinç Mustafa Güleşen

https://doi.org/10.55546/jmm.1184264

Öz

Günlük hayatta ve çalışma koşullarında elle nesne kaldırma eylemi yaygın olarak uygulanmaktadır. Elle nesne kaldırma eylemi insan vücut eklemlerinde çeşitli yüklenmeler oluşturmaktadır. Araştırmalara göre özellikle bel bölgesi kaldırma hareketinden en çok etkilenen bölgedir ve kaldırma hareketi sırasında bel bölgesindeki omurlar incelendiğinde, moment kolunun en yüksek olduğu L5/S1 eklemindeki yüklenme en yüksektir. Elle nesne kaldırma hareketinde L5/S1 eklemine etkisinin incelendiği araştırmalarda, kaldırma hareketi nesnenin iki yanındaki nesne tabanından belirli yükseklikteki tutamaçlardan tutularak gerçekleştirilmektedir. Bu çalışmada katılımcılar elle kaldırma hareketini önceki çalışmalardan farklı olarak kutuların altından kavrayarak gerçekleştirmişlerdir. Deneylerde katılımcıların 16 kg kütleli ve 3 farklı ebattaki kutuların 2 farklı kaldırma tekniği olan çömelerek ve eğilerek kaldırma hareketi sırasında L5/S1 ekleminde oluşan yüklerin değerlendirilmesi yapılmıştır. Kaldırma hareketleri Microsoft Kinect v2 kamerayla kaydedilmiştir. Kutuların elle kaldırma hareketinin L5/S1 eklemine etkisini incelemek amacıyla OpenSim biyomekanik model yazılımı kullanılmıştır. Kullanılan biyomekanik modele aktarılan insan vücut eklemleri konum verilerinin ters kinematik analiziyle eklem açıları, ters dinamik analiziyle ise eklem torkları elde edilmiştir. Daha sonra eklem reaksiyon analizi yapılarak L5/S1 eklemine binen yükler değerlendirilmiştir. Deneyler sonucunda küçük, orta ve büyük kutularda çömelerek kaldırma hareketinde L5/S1 eklemine etkiyen kompresyon kuvvetleri eğilerek kaldırmaya göre %8.8-9.1-9.6 oranında artış, eğilerek kaldırma hareketinde L5/S1 eklemine etkiyen kesme kuvvetleri çömelerek kaldırmaya göre %24.5-25.7-27.4 oranında artış göstermiştir.

Anahtar Kelimeler

Kaldırma teknikleri, Kinectv2, Kas-iskelet sistemi, OpenSim

Investigation of the Effect of Box Size on L5/S1 Joint in Manual Lifting

Öz

Manual lifting is widely practiced in daily life and working conditions. The act of lifting objects by hand creates various loads on the human body joints. According to researches, especially the lumbar region is the region most affected by the lifting movement, and when the vertebrae in the lumbar region are examined during the lifting movement, the load on the L5/S1 joint, where the moment arm is the highest, is the highest. In studies examining the effect of manual object lifting on the L5/S1 joint, the lifting movement is carried out by holding the handles at a certain height from the object base on both sides of the object. In this study, the participants performed the manual lifting movement by grasping the bottom of the boxes, unlike previous studies. In the experiments, the loads formed on the L5/S1 joint were evaluated during the lifting movement of the participants by crouching and bending, which are 2 different lifting techniques of boxes of 16 kg mass and 3 different sizes. Lifting movements were recorded with the Microsoft Kinect v2 camera. OpenSim biomechanical model software was used to examine the effect of manual lifting of the boxes on the L5/S1 joint. Joint angles were obtained by inverse kinematic analysis of the position data of human body joints transferred to the used biomechanical model, and joint torques were obtained by inverse dynamic analysis. Afterwards, joint reaction analysis was performed and loads on the L5/S1 joint were evaluated. As a result of the experiments, the compression forces acting on the L5/S1 joint increased by 8.8-9.1-9.6% in the squat lifting movement in small, medium and large boxes compared to the stoop lift, and the shear forces acting on the L5/S1 joint in the stoop lifting movement increased by 24.5-25.7-27.4% compared to the squat lifting.

Anahtar Kelimeler

Lifting techniques, Kinectv2, Musculoskeletal system, OpenSim

Kaynakça

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