Objective To evaluate the clinical valueof the revision of total hip replacement(THR), to analyse the reason of the rev isions, and to discuss the main difficulties and measures to manage it.Methods From June 1998 to January 2002, 15 cases (15 hips) were revised on totalhip replacement. The reasons for revision in the cases were as follows:failure of primary operative techenique, loosening and sinking of the components, displacement of the prosthesis, erosion of the acetabulum, as well as fracture of the femoral stem. The main difficulties of the revision were:poor health condition of the patients; the remove of the prosthesis of the primary THR,especially the broken femoral stem and the cements; the loss of localbone. The measures to remove the broken femoral stem were described.ResultsAll cases were followed up 2.4 years on average: 2 patients died from heart disease and cerebrovascular disease respectively, while the good results were achieved in the others.No infection, dislocation, loosening, and other complications occurred. The good effects were related with following factors:mild degree of illness; no severe bone defect; most of the first femoral head replacement.Conclusion The revision of THRis a more difficult operation, so that the special instrument and equipment andoperative experience are required.
fter total hip replacement ,massive bone defect occured freqently due to wearing and loosening of the prcathesis.The use of deep-freezing allograft to su pport a new implant was an attractive solution. Deep-freezing decreased the immune antigenicity of the transplanted allograft.From 1972 to 1990. the deep-freezing allografts were used in rcvision total hip replacement in 212 cases,in which 187 cases(198 hips) were followed-up for over 1 year.The general effective rate was 85%....
【Abstract】 Objective To investigate the protective effect of early motion on articular cartilage after joint allograft by performing a controlled trial between different post-operation strategies after joint allograft in an animal model. Methods Twenty hemi-knee joints were harvested from 10 6-month-old New Zealand white rabbits (male or female, weighing 2.5-3.0 kg); 10 hemi-knee joints by deep frozen treatment (donors) were transplanted to unilateral knee joints (recipients) of 10 6-month-old Chinchilla rabbits (male or female, weighing 2.5-3.0 kg), which were divided into early motion group (n=5) and sustained fixation group (n=5); and 10 hemi-knee joints were used as blank control (n=5) and frozen control (n=5). The articular cartilage of allogenic joints was detected by X-ray film, gross, and histology at 6 weeks after operation. Results Gross observation: no obvious limitation of joint movements was observed in early motion group, but obvious limitation in sustained fixation group. X-ray films: the bone ends between donor and recipient healed well with good paraposition and alignment on the operation day and 2 weeks after operation; at 6 weeks, angulation deformity was observed in early motion group of 3 rabbits, and paraposition and alignment were satisfactory in sustained fixation group. Histological observation: HE staining showed that the chondrocytes had normal quantity and morphology with few nuclear fragmentation and karyolysis in early motion group, but the quantity of chondrocytes sharply decreased with dissolved nuclei and numerous fibrous tissues in the cartilage matrix in sustained fixation group. The cell survival rate of the early motion group (49.66% ± 2.15%) was significantly higher than that of the sustained fixation group (20.68% ± 1.24%) (P lt; 0.05). Scanning electron microscopy observation: nuclear membrane was intact with chromatin condensation and edema of mitochondria and rough surfaced endoplasmic reticulum in early motion group, and that the membrane of chondrocyte vanished with blurring border between chondrocyte and matrix, rupture of nuclear membrane and the disappearance of chromatin and organelles could be found in sustained fixation group. Conclusion Early motion has protective effect on articular cartilage after joint allograft, but cannot completely prevent degeneration of the allogenic articular cartilage.
Objective To evaluate the effectiveness of posterior malleolus fixation on the function of ankle in patients with ankle fracture. Methods Between June 2007 and June 2009, 110 patients with ankle fracture were treated with posteriormalleolus fixation in 59 patients (fixation group) or without fixation in 51 patients (non-fixation group). In fixation group, there were 31 males and 28 females with an average age of 62.6 years (range, 19-75 years); the causes of injury included traffic accident (20 cases), falling (18 cases), and sprain (21 cases) with a disease duration of 1-3 days (2.2 days on average); and the locations were left ankle in 32 cases and right ankle in 27 cases, including 6 cases of type I, 23 of type II, 19 of type III, and 11 of type IV according to the ankle fracture clssification. In non-fixation group, there were 38 males and 13 females with an average age of 64.5 years (range, 16-70 years); the causes of injury included traffic accident (15 cases), falling (12 cases), and sprain (24 cases) with a disease duration of 1-3 days (2.5 days on average); and the locations were left ankle in 22 cases and right ankle in 29 cases, including 8 cases of type I, 16 of type II, 19 of type III, and 8 of type IV according to the ankle fracture clssification. There was no significant difference in general data between 2 groups (P gt; 0.05). Results All patients of 2 groups achieved wound heal ing by first intention. The patients were followed up 12-18 months (16 months on average). X-ray films showed that fractures healed at 8-12 weeks (10 weeks on average) in fixation group and at 10-14 weeks (12 weeks on average) in non-fixation group. There were significant differences in the cl inical score (89.28 ± 8.62 vs. 86.88 ± 9.47, P lt; 0.05), postoperative reposition score (33.34 ± 2.15 vs. 31.24 ± 2.89, P lt; 0.05), and osteoarthritis score (13.22 ± 1.66 vs. 12.46 ± 2.03, P lt; 0.05) according to Phill i ps ankle scoring system between 2 groups at last follow-up. There was no significant difference in cl inical score of type I and II patients between 2 groups (P gt; 0.05), but significant differences were found in cl inical score and osteoarthritis score of type III and IV patients between 2 groups (P lt; 0.05). There were significant differences in the postoperative reposition score between 2 groups in all types of fractures (P lt; 0.05). Conclusion The posterior malleolus fixation may provide satisfactory cl inical functional outcomes for ankle fracture. Proper fracture classification and correct method of internal fixation are important for achieving good reduction and improving the long-term results.
Objective To discuss the clinical application of preserving femoral neck in total hip arthroplasty and to analyze the early stage results.Methods From January 1999 to June 2001, 12 patients underwent total hip arthroplasty with preservation of femoral neck. We cut off the femoral head in infra-head position with improved Moore micro-incisions to reserve intact neck of femur. Thensuitable size of extra cup was selected and placed at 55° eversion angle. The internal cup, made from ultra high polymer poly thene and with ultra radius design, was placed at 45°eversion angle. Harris scores were recorded before operation, after operation and during the follow-up. During the follow-up, the X-rayfilms were taken to assess position, loosening of the prosthesis and ectopic ossification.Results All 12 patients were followed up 2-4.5years with an average of 3.1 years. The mean Harris score of hip elevated from 54 scores before operation to 92 scores of the last follow-up. Mild ectopic ossification occurred in 3 cases. There was no prosthesis loosening and femoral prosthesis setting, and only onepatient had mild bone absorption around femoral prosthesis.Conclusion Total hip arthroplasty with femoral neck preservation is a good option for the patients who need total hip arthroplasty for variable reasons, which is indicated for the patients whose femoral neck is intact with no osteoporosis.
Objective To explore the techenique of fusing the reconstructed titanic plate, the C2 pedical screws, and the autogenous granulated cancellous bone graft in the occipitocervical region. Methods From April 2002 to January 2005, 19 patients aged 31-67 years with occipitocervical instability underwent the occipitocervical fusion using the reconstructed plate, C2 pedical screws, and autogenous granulated cancellous bone graft. Of the patients, 8 had complex occipitocervical deformity，8 had old atlantoaxial fracture and dislocation，2 had rheumatoid arthritis and anterior dislocation of the atlantoaxial joint, and 1 had cancer of the dentoid process of the axis． Results No complication occurred during and after operation．The follow-up for an average of 16 months in 19 patients showed that all the patients achieved solid bony fusion in the occipitocervical region．There was no broken plate, broken screw, looseness of the internal fixation or neurovascular injury. Conclusion The fixation of the C2 pedical screws with the reconstructed titanic plate is reliable, the insertion is easy, and the autogenous granulated cancellous bone graft has a high fusion rate, thus resulting in a satisfactory effect in the occipitocervical fusion.
Objective To investigate the effect of microsurgical repair of refractory bone defects and nonunion in distal humers. Methods Twelve cases of bone defects and nonunion indistal humerus wererepaired with free vascularised fibular graft and fixed with the anatomical bone plate. Of the 12 cases, 8 had pseudarthrosis, and 4 had bone defects 3-5 cm. Fibular graft ranged from 5-15 cm, 8.5 cm in average. Results After a follow-up of 3-18 months, 8.5 months in average, all cases of free vascularised fibular graft healed within 38 months. The fibular graft thickenedas time passed. Normal recessive osseous elbow joint, improvement in the inflection and extension of elbow joint, and normal revolving of antebrachium were attained. The short of limbs were corrected. Satisfactory functions of supporting and fine operation were attained. Conclusion With the support of anatomical bone plate, the fibular graft can help the recovery of joint functionand repair bone defects and nonunion as to avoid joint replacement with prosthesis.
Objective To explore the nursing quality standards of joint surgery based on “structure-process-outcome” three-dimensional quality evaluation model, and provide a reference for improving the quality of joint surgery nursing. Methods From March to July 2023, based on the “structure-process-outcome” three-dimensional quality structure model as the theoretical framework, combined with systematic literature review and semi-structured interviews, the quality standards of joint surgery specialist nursing were preliminarily formulated. The Delphi method was used for screening, demonstration, and correction, then the analytic hierarchy process was used to determine the weights. Results The recovery rates of the two rounds of expert letter consultation were 93.75% and 100.00%, respectively. The expert authority coefficients of both rounds were 0.95. The positive coefficients of experts in the two rounds were 0.93 and 1.00, respectively. The coefficients of variation after the second round of correspondence were 0-0.20. In the second round of correspondence inquiry, the Kendall harmony coefficients of primary standards, secondary standards and tertiary standards were 0.156, 0.115 and 0.285, respectively, with statistical significance (P<0.05). Finally, the quality standards of joint specialty nursing included 3 primary standards, 23 secondary standards and 99 tertiary standards. Conclusion The construction process of nursing quality standards of joint surgery specialty based on “structure-process-outcome” three-dimensional quality structure model is scientific and reliable, the index evaluation results are less volatile, and the opinions are concentrated, which can provide a basis for comprehensively, accurately and pertinently improving the quality of joint surgery specialty nursing.
ObjectiveTo investigate the clinical outcome of application of joint prosthesis in limb salvage treatment of mildmalignant tumor at the articular ends of femurs, with severe osteolysis. Methods The treatment of 15 cases of mildmalignant tumor at the articular ends of femurs with severe bone destruction, from 1978 to 1999, was reviewed. There were 10 cases of giant-cell bone tumor and 5 cases of chondrosarcoma, among which there were 5 cases at the stage ofⅠA, 9 cases at ⅠB, and 1 case at ⅡA, with 4 cases at the proximal end and 11cases at the distal end. The tumor was totally removed, with a massive bone defect left at the foci, and then the prosthesis replacement was performed to reconstruct the articular joint. All of the 15 patients were followed up for 9 monthsto 20 years, 4 years and 3 months on average, before clinical evaluation. Results All of the wound healed well, with primary healing. Local relapse occurred in one case and the patient died of lung metastasis; the amputation of the replaced knee joint was performed in one case due to severe infection after trauma; radiograph showed there was slight sunk of the prosthesis in 2 cases after replacement. The other 11 cases recovered well with satisfactory function. Conclusion The limb salvage treatment of mildmalignant tumor at the articular ends of femurswould be available, especially for those with massive bone destruction, when the tumor is removed by whole and rationally marginal resection, followed by properlyutilization of prosthesis and general post-operative exercise.
Objective To investigate the effect of ultrasound-guided intra-articular injection of shoulder joint combined with hydraulic dilatation in the treatment of frozen shoulder in different clinical stage. Methods The clinical data of patients with frozen shoulder diagnosed in Zigong Fourth People’s Hospital from January 2020 to January 2021 were collected retrospectively. The patients were divided into three groups according to the clinical stage of frozen shoulder (stage Ⅰ, stage Ⅱ and stage Ⅲ). All patients volunteered to receive ultrasound-guided intra-articular injection of shoulder joint combined with hydraulic dilatation for 3 consecutive times, with a 2-week interval for each treatment, and followed up for 6 months. Before treatment and 2 weeks, 4 weeks, 2 months, 4 months and 6 months after treatment, the patients were scored with Visual Analog Scale (VAS) and Active Range of Shoulder Motion (AROM), and the capsule thickness of shoulder were measured, respectively. Results A total of 150 patients were included, including 61 patients in stage Ⅰ, 74 patients in stage Ⅱ and 15 patients in stage Ⅲ. The thickness of shoulder joint capsule on the affected side was thicker than that on the healthy side (t=24.384, P<0.001). After treatment, the thickness of shoulder joint capsule and VAS score decreased (P<0.05), and the AROM score increased (P<0.05). Before treatment, the thickness of shoulder joint capsule in stageⅡpatients was higher than that in stageⅠand Ⅲ patients [(4.3±1.0) vs. (2.9±0.5) vs. (3.1±0.4) mm; F=57.195, P<0.001]. Four weeks, 2 months, 4 months and 6 months after treatment, the decrease of shoulder joint capsule thickness was the largest in stageⅡpatients (P<0.05). Compared with stageⅡand Ⅲ patients, stageⅠpatients had the highest VAS score before treatment (7.7±0.7 vs. 5.1±0.8 vs. 4.5±0.7; F=233.560, P<0.001). There was no significant difference in VAS scores among the three groups 4 weeks (F=1.679, P=0.190), 4 months (F=1.348, P=0.263) or 6 months (F= 0.940, P=0.393) after treatment, while there were significant differences in VAS scores among the three groups 2 weeks (F=66.924, P<0.001) and 2 months (F=9.598, P<0.001) after treatment. Compared with stageⅠand Ⅲ patients, stageⅡpatients had the lowest AROM score before treatment (15.2±1.8 vs. 23.5±1.9 vs. 26.1±3.5; F=343.718, P<0.001). Four weeks (F=0.034, P=0.967), 2 months (F=0.222, P=0.801), 4 months (F=0.634, P=0.532) or 6 months (F=0.001, P=0.999) after treatment, there was no significant difference in AROM scores among the three groups, while there was significant difference in AROM scores among the three groups 2 weeks after treatment (F=177.135, P<0.001).Conclusions Ultrasound-guided intra-articular injection of shoulder joint combined with hydraulic dilation has good efficacy in the treatment of frozen shoulder in different clinical stage. Early injection treatment can shorten the course of the disease and relieve the pain of patients during the course of the disease.