The Analysis of Dimple Geometry on Artificial Hip Joint to the Performance of Lubrication

Simulasi Prediksi Tekanan Kontak pada Permukaan Acetabular Cup dengan Aplikasi Permukaan Bertekstur pada Total Hip Arthroplasty

“…Penggunaan permukaan bertekstur telah mendapatkan perhatian khusus dalam penerapannya pada komponen mekanika seperti bantalan aksial, bantalan luncur, bantalan jurnal, cincin piston, perapat mekanik, mata pahat mesin perkakas serta berbagai aplikasi lainnya [1]. Dalam bidang alat implan, aplikasi permukaan bertekstur pada total hip arthroplasty telah mulai dilakukan pada permukaan bantalan pasang yang berkontak dengan penambahan dimple [2].…”

The Effect of Bottom Profile Dimples on the Femoral Head on Wear in Metal-on-Metal Total Hip Arthroplasty

“…Total hip arthroplasty with a textured surface can reduce the surface contact area, and decrease the adhesion wear and coefficient of friction [ 8 ]. Dimples serve to trap wear particles, thereby preventing abrasive wear of the contact surface by a third object, and generating hydrodynamic pressure to provide additional lift [ 9 , 10 ]. Various studies have also shown the positive effect of surface texturing on bearings in improving the tribological performance, both theoretically and experimentally [ 11 , 12 , 13 , 14 ].…”

“…Some parameters that influence adding dimples to reduce wear in total hip arthroplasty, such as shape, diameter, depth, distance, direction, and arrangement, have been investigated previously in order to maximize the effect of adding dimples, and to find the optimal parameters. Even so, until now, there has been no research to determine the optimum conditions for various parameters; these are usually investigated by trial and error [ 9 , 10 ]. One of the relatively new parameters being studied by many researchers is the bottom profile geometry of dimples.…”

“…The finite element method, as a computational analysis tool, has been widely applied to various total hip arthroplasty studies, minimizing the need for costly experiments. To shorten this time-consuming computational process, many studies, such as those by Cosmic et al [ 15 ], Liu et al [ 16 ], Jamari et al [ 17 ], Harun et al [ 2 ], Meng et al [ 6 ], and Basri et al [ 9 , 10 ], have used simplified loading, with vertical loads that did not represent the true physiological hip joint. This may limit the actual results, including analysis of the effect of adding dimples on wear, which needs to consider gait loading and the range of motion of the hip joint in actual conditions.…”

“…Total hip arthroplasty wear modelling by previous researchers has mostly used synovial fluids as lubrication, to assess the actual conditions [ 6 , 9 , 10 ]. Dry contact, which reflects boundary lubrication conditions, is also essential, and contact pressure can be seen more clearly under dry contact conditions.…”