Ocular trauma is a very common incidence that occurs in up to 67%of patients with maxillofacial trauma.It results in life-long agony of not being like others with two eyes,which can see and admire the nature’s beauty...Ocular trauma is a very common incidence that occurs in up to 67%of patients with maxillofacial trauma.It results in life-long agony of not being like others with two eyes,which can see and admire the nature’s beauty.This article reports on a case of a 23-year-old male patient with phthisis bulbi,resulting from ocular trauma.The patient was rehabilitated aesthetically by fabrication of custom-made ocular prosthesis for his traumatically injured right eye.The patient was pleased with the aesthetic outcome,comfort,and mobility offered by the custom ocular prosthesis.There were no complications with regard to health of underlying residual ocular tissues and there was no need of relining of the prosthesis at 6 month recall appointment.Rehabilitation of patients with ocular trauma requires a multidisciplinary approach involving ophthalmologist,psychologist,and skilled maxillofacial prosthodontist.Custom-made ocular prosthesis fitted over the phthisical globe seems to be a highly positive,logical,noninvasive,and beneficial approach to increase mobility to the prosthesis,improve the cosmetic appearance and psychological well-being of the patient.展开更多
While total knee replacement is successful, hemiarthroplasty is necessary for some young, obese and active patients who are especially not suitable for unicompartmental or total knee prostheses. Hemiarthroplasty also ...While total knee replacement is successful, hemiarthroplasty is necessary for some young, obese and active patients who are especially not suitable for unicompartmental or total knee prostheses. Hemiarthroplasty also provides an opportunity for children with bone tumors. The design ofhemiarthroplasty should be patient-specific to reduce contact stress and friction as well as instability, compared to conventional hemi-knee prosthesis. A novel bipolar hemi-knee prosthesis with two flexion stages was developed according to a healthy male＇s knee morphological profile. The motion mode of the bipolar hemi-knee prosthesis was observed through roentgenoscopy in vitro experiment. The biomechanical properties in one gait cycle were evaluated though finite element simulation. The bipolar hemi-knee prosthesis was found to produce knee flexion at two stages through X-ray images. The first stage is the motion from upright posture to a specified 60~ flexion, followed by the second stage of motion subsequently to deep flexion. The finite element simulation results also show that the designed hemi-knee prosthesis has the ability to reduce stresses on the joint contact surfaces. Therefore, it is possible for the bipolar hemi-knee prosthesis to provide better biotribological performances because it can reduce stresses and potentially wear on the opposing contacting surface during a gait cycle, orovidin~ a t^romisin~ treatment strate^v in future Joint renair znd renlneement展开更多
文摘Ocular trauma is a very common incidence that occurs in up to 67%of patients with maxillofacial trauma.It results in life-long agony of not being like others with two eyes,which can see and admire the nature’s beauty.This article reports on a case of a 23-year-old male patient with phthisis bulbi,resulting from ocular trauma.The patient was rehabilitated aesthetically by fabrication of custom-made ocular prosthesis for his traumatically injured right eye.The patient was pleased with the aesthetic outcome,comfort,and mobility offered by the custom ocular prosthesis.There were no complications with regard to health of underlying residual ocular tissues and there was no need of relining of the prosthesis at 6 month recall appointment.Rehabilitation of patients with ocular trauma requires a multidisciplinary approach involving ophthalmologist,psychologist,and skilled maxillofacial prosthodontist.Custom-made ocular prosthesis fitted over the phthisical globe seems to be a highly positive,logical,noninvasive,and beneficial approach to increase mobility to the prosthesis,improve the cosmetic appearance and psychological well-being of the patient.
基金Acknowledgments This work was supported by grants from the Natural Science Foundation of China （51075320, 51375371, 51323007）, and the Fundamental Research Funds for the Central Universities. The authors would like to acknowledge the contributions of Peng Liu of Fourth Military Medical University.
文摘While total knee replacement is successful, hemiarthroplasty is necessary for some young, obese and active patients who are especially not suitable for unicompartmental or total knee prostheses. Hemiarthroplasty also provides an opportunity for children with bone tumors. The design ofhemiarthroplasty should be patient-specific to reduce contact stress and friction as well as instability, compared to conventional hemi-knee prosthesis. A novel bipolar hemi-knee prosthesis with two flexion stages was developed according to a healthy male＇s knee morphological profile. The motion mode of the bipolar hemi-knee prosthesis was observed through roentgenoscopy in vitro experiment. The biomechanical properties in one gait cycle were evaluated though finite element simulation. The bipolar hemi-knee prosthesis was found to produce knee flexion at two stages through X-ray images. The first stage is the motion from upright posture to a specified 60~ flexion, followed by the second stage of motion subsequently to deep flexion. The finite element simulation results also show that the designed hemi-knee prosthesis has the ability to reduce stresses on the joint contact surfaces. Therefore, it is possible for the bipolar hemi-knee prosthesis to provide better biotribological performances because it can reduce stresses and potentially wear on the opposing contacting surface during a gait cycle, orovidin~ a t^romisin~ treatment strate^v in future Joint renair znd renlneement
