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Masjudin Tumin,박경순,윤택림,Azlina Amir Abbas 전남대학교 의과학연구소 2014 전남의대학술지 Vol.50 No.1
This retrospective study was undertaken to compare the outcomes of staged bilateraltotal hip arthroplasty (THA) by the conventional approach with those of two-incisionminimally invasive (MIS-2) THA in terms of clinical and radiological results, complications,and patient preferences. Twenty-two patients aged 30 to 80 years underwentstaged bilateral THA. The conventional posterolateral approach was used on the firsthips treated and a modified MIS-2 approach on the second hips. The mean time betweenthe first and second procedures was 73.8 months, and the patients were followed upfor at least 12 months after both procedures. At the last follow-up visits, THA via theMIS-2 approach was found to provide significantly earlier partial-weight-bearing ambulation,better postoperative Harris hip scores, and better ability to sit cross-leggedand was found to be more preferred by patients than conventional THA. There wereno significant differences in the complication rates for the two approaches. The presentresults show that MIS-2 THA is as safe as the conventional posterolateral approachin experienced hands and presents no additional complication risks.
Red light of 647 nm enhances osteogenic differentiation in mesenchymal stem cells.
Kim, Hyung Keun,Kim, Ji Hyun,Abbas, Azlina Amir,Kim, Dong-Ok,Park, Sung-Jun,Chung, Jae Yoon,Song, Eun Kyoo,Yoon, Taek Rim Baillière Tindall ; Springer London 2009 LASERS IN MEDICAL SCIENCE Vol.24 No.2
<P>The use of light for medical treatment has been studied previously. In this study, we examined the effect of light from a red light-emitting diode on osteogenic differentiation of mouse mesenchymal stem cells (D1 cells) which were cultured in the presence of osteogenic differentiation medium (ODM) for 3 days, then exposed to a red light-emitting diode (LED) light of 647 nm wavelength once for 10 s, 30 s or 90 s with radiation energies of 0.093 J, 0.279 J and 0.836 J, respectively. D1 cells in the presence of ODM differentiated into osteoblasts, and this process was enhanced on exposure to LED light in ODM medium. This effect was confirmed by increased Alizarin red staining, higher alkaline phosphatase (ALP) activity, higher mRNA expressions of osteocalcin, collagen type I, osteopontin and Runt-related transcription factor2 (Runx2), and higher levels by reverse transcriptase-polymerase chain reaction (RT-PCR) and by increased immunofluorescence staining against cluster of differentiation 44 (CD44) by immunofluorescence microscopy, confocal microscopy and flow cytometric analysis. These data suggest that osteogenic differentiation of mesenchymal stem cells (MSCs) in ODM is enhanced by LED light exposure.</P>