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Article in Chinese | WPRIM | ID: wpr-879342


OBJECTIVE@#To investigate how to place the anteversion of acetabular prosthesis more reasonably in patients with lumbar degenerative kyphosis.@*METHODS@#A total of 122 patients with degenerative kyphosis of lumbar spine who underwent total hip arthroplasty from December 2017 to October 2019 were included and divided into experimental group and control group, 61 cases in each group. In experimental group, there were 25 males and 36 females, with a median age of 67.0 years;the median course of disease was 46.0 months;the functional pelvic plane with acetabular anteversion was set according to different types of pelvic anterior plane bracket. In control group, there were 27 males and 34 females, with a median age of 67.0 years;the median course was 42.0 months;in control group, the anteversion was set by the traditional method. The patients were followed up for 3 months. The operation time and blood loss were recorded. The incidence of infection and dislocation within 3 months was counted. Harris score before and 3 months after operation was recorded. Functional anteversion angle of standing position was measured 3 months after operation.@*RESULTS@#Compared with control group, there was no difference in operation time and blood loss between the two groups (P=0.918, 0.381);there was no infection between two groups within 3 months after operation;there was 1 case of hip joint dislocation in the control group and no dislocation in experimental group. There was no significant difference in Harris score before and after operation. Three months later, reexamination of pelvic standing radiographs showed that the number of patients with functional anteversion of acetabular prosthesis outside the safe area was less in experimental group thanin control group (@*CONCLUSION@#According to the preoperative evaluation and classification of patients, better functional anteversion of acetabular prosthesis can be obtained with the help of pelvic anterior plane reference bracket in hip arthroplasty with lumbar degenerative kyphosis.

Acetabulum/surgery , Aged , Arthroplasty, Replacement, Hip , Female , Hip Dislocation/surgery , Hip Joint , Hip Prosthesis , Humans , Kyphosis , Male , Retrospective Studies
Article in Chinese | WPRIM | ID: wpr-879340


OBJECTIVE@#To investigate the influence of total hip arthroplasty on the changes of spine pelvic parameters in patients with hip spine syndrome.@*METHODS@#From January 2013 to October 2014, 22 patients (26 hips) with hip spine syndrome accompanied by necrosis of femoral head, hip osteoarthritis and congenital dysplasia of hip were treated with total hip arthroplasty. There were 12 males and 10 females with an average age of 58.4 years (range, 45 to 76 years). The course of disease was 1.5 to 25 years with an average of 12.8 years. Before and after the operation, the anteroposterior, full length radiographs of both lower limbs, thoracolumbar spine and pelvis in standing position were routinely taken. The balance parameters of spine pelvis coronal plane and sagittal plane before and after the replacement were measured. Visual analogue scale (VAS), Oswestry Disability Index (ODI) and Harris score were performed before and after the operation.@*RESULTS@#All cases were followed up for 21 to 52 (32±8) months. No infection, prosthesis subsidence, loosening, prosthesis dislocation were found in the last follow up. After total hip arthroplasty, sagittal vertical axis(SVA), thoracic kyphosis(TK), lumbar lordosis(LL), pelvic tilt (PT) were significantly reduced(@*CONCLUSION@#After total hip arthroplasty, the coronal and historical balance parameters of spine and pelvis are significantly improved, and the short term and medium-term effects are satisfactory.

Aged , Arthroplasty, Replacement, Hip/adverse effects , Female , Follow-Up Studies , Humans , Lumbar Vertebrae/surgery , Male , Middle Aged , Patients , Pelvis , Retrospective Studies , Spine