Artificial Hip Replacement Research Articles

Artificial Hip Replacement Combined with Proximal Femoral Locking Plate in The Treatment of Intertrochanteric Femur Fracture with Peritrochanteric Fracture

Artificial Hip Replacement Combined with Proximal Femoral Locking Plate in The Treatment of Intertrochanteric Femur Fracture with Peritrochanteric Fracture

Clinical application of LARS tumor tube in joint function reconstruction of tumor type artificial hip replacement.

Proximal femur tumor resection often leads to hip joint instability and functional loss. Various methods have been clinically applied to repair hip joint soft tissue function, but deficiencies remain. This study aims to evaluate the advantages and disadvantages of the ligament advanced reinforcement system (LARS) tumor tube in assisting soft tissue function reconstruction in patients undergoing tumor type artificial hip replacement surgery. This study included 85 patients (41 males, 44 females) with proximal femoral tumors treated at the Xiangya Bone Tumor Treatment Center from January 2012 to January 2022, aged 10 to 79 (38.5±18.2) years. Among them, 13 cases had benign aggressive tumors, 45 had primary malignant bone tumors, and 27 had bone metastases. Clinical data, imaging data, and intraoperative photos were collected. Patients were followed up and postoperative functional evaluations were conducted using the Musculoskeletal Tumor Society (MSTS) scoring system and Harris hip joint scoring system to assess limb function and hip joint function. Preoperative pathological fractures were present in 37 cases (43.5%), with a lesion length of (9.4±2.9) cm. Among non-metastatic tumor patients, 7 experienced postoperative recurrence, including 6 cases of osteosarcoma and 1 case of fibrosarcoma. Pulmonary metastases occurred in 9 osteosarcoma patients. Five patients required reoperation due to postoperative complications, including 3 cases of deep vein thrombosis, 1 case of giant cell granuloma, and 1 case of prosthesis infection. Postoperatively, 5 patients exhibited Trendelenburg gait, and 6 had leg length discrepancies. The postoperative MSTS score was 26.7±1.4, and the Harris score was 89.6±5.3. The LARS tumor tube can effectively assist in reconstructing the soft tissue function of the hip joint and greatly reduce postoperative complications, making it an effective technical improvement in joint function reconstruction in tumor type artificial hip replacement surgery.

Comparison of proximal femoral nail antirotation internal fixation and artificial hip replacement for elderly patients with intertrochanteric fractures.

To compare the effects of proximal femoral nail antirotation (PFNA) internal fixation and artificial hip replacement (AHR) on serum inflammatory factors and hip function recovery in elderly patients with intertrochanteric fractures (IFs). One hundred and thirty patients with IFs who underwent surgery at the People's Hospital of Pingyang between July 2018 and July 2020 were enrolled. Sixty-five patients received PFNA internal fixation (fixation group) and 65 received AHR (replacement group). Surgical indicators and complications were recorded in both groups. The Harris Hip Scale was used to score hip joint function, the Visual Analog Scale (VAS) to assess pain, the MOS 36-Item Short-Form Health Survey (SF-36) to evaluate life quality, and enzyme-linked immunosorbent assay to measure serum tumor necrosis factor-α (TNF-α), interleukin (IL)-6, and IL-1β. The replacement group experienced notably shorter hospitalization times, less complete weight-bearing time, and earlier time to walk compared to the fixation group (all P<0.05). The replacement group also showed a lower incidence of poor fracture healing and complications (both P<0.05). Additionally, on postoperative days 3, 15, and 45, the replacement group had notably lower VAS scores (all P<0.05). Furthermore, the replacement group exhibited higher Harris Hip Scale scores at 1, 2, and 3 months post-surgery (all P<0.05). Higher postoperative SF-36 scores were also observed in the replacement group (P<0.05). On postoperative day 30, both groups presented decreases in TNF-α, IL-6, and IL-1β levels compared to preoperative levels, with even lower levels in the replacement group (all P<0.05). AHR can help elderly patients with IFs ambulate earlier, speed up hip function recovery, reduce inflammation, and improve life quality with fewer postoperative complications, making it worthy of clinical promotion.

A brief commentary on the hot topics in artificial hip replacement

A brief commentary on the hot topics in artificial hip replacement

Comprehensive Review on Biomaterials and Their Inherent Behaviors for Hip Repair Applications.

Developing biomaterials for hip prostheses is challenging and requires dedicated attention from researchers. Hip replacement is an inevitable and remarkable orthopedic therapy for enhancing the quality of patient life for those who have arthritis as well as trauma. Generally, five types of hip replacement procedures are successfully performed in the current medical market: total hip replacements, hip resurfacing, hemiarthroplasty, bipolar, and dual mobility systems. The average life span of artificial hip joints is about 15 years, and several studies have been conducted over the last 60 years to improve the performance and thereby increase the lifespan of artificial hip joints. Present-day prosthetic hip joints are linked to the wide availability of biomaterials. Metals, ceramics, and polymers are some of the most promising types of biomaterials; nevertheless, each biomaterial has advantages and disadvantages. Metals and ceramics fail in most applications owing to stress shielding and the emission of wear debris; ongoing research is being carried out to find a remedy to these unfavorable responses. Recent research found that polymers and composites based on polymers are significant alternative materials for artificial joints. With growing research and several biomaterials, recent reviews lag in effectively addressing hip implant materials' individual mechanical, tribological, and physiological behaviors. This Review comprehensively investigates the historical evolution of artificial hip replacement procedures and related biomaterials' mechanical, tribological, and biological characteristics. In addition, the most recent advances are also discussed to stimulate and guide future researchers as they seek more effective methods and synthesis of innovative biomaterials for hip arthroplasty application.

Assessment of factors impacting outcome of primary total hip arthroplasty

Introduction: Hip replacement is one of the most successful surgeries in the clinic for the removal of painful joints. Hip osteoarthritis and femoral head necrosis are the 2 main reasons for hip replacement. Several factors are associated with the outcomes of surgery. Nonsurgical factors include gender, age, body mass index, prosthetic material, and risk factors. Surgical factors are anesthesia, postoperative complications, and rehabilitation. Considering the increasing demand for hip arthroplasty and the rise in the number of revision operations, it is imperative to understand factor-related progress and how modifications of these factors promotes recovery following hip replacement. In this review, we first summarize recent findings regarding crucial factors that influence the outcomes of artificial hip replacement surgery. These findings not only show the time-specific effect for the treatment and recovery from hip arthroplasty in the clinic, but also provide suitable choices for different individuals for clinicians to consider. This, in turn, will help to develop the best possible postoperative program for specific patients.Material & Methods: Our’s is a Cross-sectional study which included 32 individuals both male and female above the age of 20 years. All the patients who had undergone Primary Total Hip Replacement for isolated hip pathologies at our hospital; and all are evaluated for functional outcome using Harris Hip Score Pre-operatively, at 1 month, at 3 months, at 6 months and compared.Results: In our study there was a statistically significant association between BMI, Waist: Ratio, Comorbidity, Duration of surgery & Age and the outcome, which shows that the outcome is dependent on the BMI, Waist: Ratio, Comorbidity, Duration of surgery & Age of the patients.Conclusion: With the increasing numbers of patients receiving hip replacements every year, it is important to have a knowledge of the possible factors that may influence the outcomes of surgery in individual patients. However, how the novel findings of the factors are associated with the outcomes of surgery and how the variations should be assessed in different individuals are 2 main reasons for us to summarize the literature, and it is imperative to be aware of these factors for designing personalized therapy for individuals in the clinic.

Effect of the clinical nursing pathway on clinical symptoms, hip joint function, and nursing satisfaction in male patients with artificial hip arthroplasty

The purpose of this study is to explore the effect of clinical nursing pathway on the clinical symptoms, hip function and nursing satisfaction of male patients who undergo artificial hip replacement. A total of 102 male patients who had artificial hip arthroplasty and were admitted to the West China Hospital of Sichuan University were recruited. Participants were randomly divided into the study group (given clinical nursing pathway) and the control group (given routine nursing intervention). The hospitalization time, treatment cost, symptom checklist, nursing satisfaction and hip function score of the two groups were observed and compared. The hospitalization time and treatment cost of the study group were significantly lesser than those of the control group (p &lt; 0.05). Both groups showed significant improvement in the scores of the symptom checklist, but the study group had significantly lower scores than the control group. Similarly, on the day of discharge, there was no significant difference in hip joint function scores between the two groups of patients. However, 30 days after surgery, the hip joint function scores of both groups of patients was remarkably improved (p &lt; 0.05), yet, this improvement is significantly higher in the study group. The nursing satisfaction of the study group was higher than that of the control group, and the difference was significant (p &lt; 0.05). The total incidence of complications in the study group was lower than the control group (5.88%, vs. 23.53%, p &lt; 0.05). The clinical nursing pathway could effectively improve the clinical symptoms of male patients undergoing artificial hip arthroplasty, promote the recovery of hip joint function, and significantly improve the clinical nursing satisfaction. Therefore, it is one of the reliable schemes in the clinical practice of patients undergoing artificial hip arthroplasty.

Lubrication Modelling of Artificial Joint Replacements: Current Status and Future Challenges

This paper reviews the recent advancements in computational modelling of the lubrication of hip and knee joint replacements, especially those concerning Professor Duncan Dowson’s contribution. The review starts with the development of modelling the five key parameters that appeared in the pioneered Hamrock–Dowson formula. Then, the theory and approaches for the mixed lubrication in which the artificial hip and knee joint replacements operate are reviewed. We also discuss the current challenges in modelling the lubrication behaviour of joint replacements and how these challenges could be addressed in future studies. These challenges include the mixed lubrication theory, the numerical complexities due to complicated realistic geometry, material and rheology, and individual physiological diversities.

Effect of Rehabilitation Nursing under the Guidance of the Health Action Process Approach Model on Perioperative Nursing Effect of Artificial Hip Arthroplasty: Effect on Promoting Quality of Life and Postoperative Rehabilitation.

Objective To explore the influence of rehabilitation nursing under the guidance of Health Action Process Approach (HAPA) model on the perioperative nursing effect of artificial hip replacement and to analyze the effect of this nursing model on the quality of life and postoperative rehabilitation of patients undergoing artificial hip replacement. Methods A total of 200 patients with hip arthroplasty treated in our hospital from January 2019 to July 2021 were enrolled. The patients were randomly assigned into the control group and study group. The former received routine nursing, and the latter received rehabilitation nursing under the guidance of the HAPA model. Nursing satisfaction, pain score, Harris hip function score, timed stand-up-walk test, MBI score, and quality of life score were compared. Results First of all, we compared the nursing satisfaction. In the study group, 86 cases were very satisfied, 8 cases were satisfied, and 6 cases were general; the satisfaction rate was 100%. In the control group, 48 cases were very satisfied, 22 cases were satisfied, 12 cases were general, and 18 cases were dissatisfied; the satisfaction rate was 82.0%. The nursing satisfaction in the study group was higher compared to that in the control group (P < 0.05). Secondly, we compared the pain scores. Before nursing, there exhibited no significant difference (P > 0.05). After nursing, the pain score of the two groups increased. Moreover, the pain score of the study group at discharge and 1 month, 3 months, and 6 months after operation was lower compared to that of the control group (P < 0.05). Before nursing, there exhibited no significant difference in the Harris hip joint function score (P > 0.05). After nursing, the Harris hip function score increased. Furthermore, the Harris hip function score of the study group at discharge and 1 month, 3 months, and 6 months after operation was higher compared to that of the control group (P < 0.05). In terms of the timed stand-up-walking test, there exhibited no significant difference before nursing (P > 0.05). After nursing, the time of the timed stand-up-walk test in both groups decreased. And the timed stand-up-walk test at discharge and 1 month, 3 months, and 6 months after operation in the study group was lower compared to that in the control group (P < 0.05). Compared with the MBI scores, there exhibited no significant difference before nursing (P > 0.05). After nursing, the MBI scores increased. Of note, the MBI scores of the study group at discharge and 1 month, 3 months, and 6 months after operation were higher compared to those of the control group (P < 0.05). Finally, we compared the scores of life quality. Before nursing, there exhibited no significant difference (P > 0.05). After nursing, the scores of life quality decreased. The scores of physiological function, psychological function, social function, and health self-cognition in the study group were lower compared to those in the control group (P < 0.05). Conclusion The perioperative rehabilitation nursing program of artificial hip replacement for the elderly based on the HAPA model is feasible, which can effectively enhance the functional recovery of hip joint, promote the ability of self-care of daily life, relieve pain and anxiety, and help to achieve dynamic balance and gait stability in the early stage. The rehabilitation program is better than routine nursing. As a new social cognitive model, the HAPA model is applied to the rehabilitation nursing environment of hip replacement from the aspect of social cognitive behavior, which can help to enhance the rehabilitation behavior of elderly patients, playing an important role in the rehabilitation effect of perioperative nursing.

Morphometryic analysis of proximal femoral neck and head of dry femur in Madhya Pradesh

Background: Femur is widely studied in the fields of orthopedics, anthropology, forensic and human kinematics. Mostly femoral fracture of upper end is involved. Most common cause of hip joint failure is osteoarthritis. Other conditions that are rheumatoid arthritis, osteonecrosis, avascular necrosis, trauma, and bone tumors lead to hip replacement surgery. Annually, about 800,000 artificial hip joint replacements are performed across the world. The prosthetic components are used in total hip arthroplasty. The present study was undertaken to investigate the variations in the morphometry of femur. The study was performed to enlighten the orthopedic surgeons and implant manufacturer about the geometry of upper end of femur. Objectives: The objectives of present study to measure the neck and head transverse and vertical diameter of femur. Material and Methods: The present study was performed on 200 dry femora in the department of anatomy RKDF Medical College Hospital &amp; Research Centre, Bhopal, Madhya Pradesh. The measurements were taken of neck and head transverse and vertical diameter of femur by using Vernier Caliper. The mean value and range were calculated by using SPSS software.

Clinical Analysis on Failure of Internal Fixation of Hip Fracture Treated by Artificial Hip Replacement

Clinical Analysis on Failure of Internal Fixation of Hip Fracture Treated by Artificial Hip Replacement

Investigation on the etiology of patients undergoing non-traumatic total hip arthroplasty in China.

China has neither a nationwide joint replacement registry similar to Sweden and New Zealand nor a universal healthcare (medical insurance) registry similar to Hong Kong and Singapore to check. The purpose was to initially understand the distribution characteristics of gender, age and etiology of patients undergoing total hip replacement for non-traumatic reasons nationwide. The clinical data of patients who underwent initial artificial total hip replacement due to non-traumatic reasons in joint surgery of 13 large general first-class hospitals at Grade 3 in northern, western, eastern, southern, and southwestern China were collected. After the classification of patients by gender, the etiological characteristics and age distribution of male and female patients were compared, as well as male to female ratio and disease composition ratio of patients of different ages, distribution of causes in different regions, composition ratio, and age distribution characteristics of patients of different ethnic groups. In this study, the data of a total of 7663 patients in joint surgery of 13 general first-class hospitals at Grade 3 from 2015 to 2017 were collected, and 7622 patients were finally included in the study after excluding missing age, gender and some foreign patients. The main causes of diagnosis in male patients were AVN, DDH, and OA, and top 3 causes in female patients were DDH, AVN, and OA. This study initially understand the distribution characteristics of gender, age and etiology of patients undergoing total hip replacement for non-traumatic reasons nationwide, and further guide the clinical diagnosis, early prevention and treatment of the disease and provide data.

Impact of combined nerve blocks on the outcome of hip replacement in elderly patients with acute cerebral infarction

Objective: To investigate the impact of ultrasound-guided lumbar plexus, sciatic nerve and L1 paravertebral combined nerve blocks on the outcomes of elderly acute cerebral infarction patients with femoral neck fracture who underwent hip replacement. Methods: The clinical data of 114 elderly acute cerebral infarction patients with femoral neck fracture and underwent artificial hip replacement surgery from May 2013 to September 2018 in Renmin Hospital of Wuhan University were retrospectively analyzed. The patients were divided into two groups based on the different anesthetic methods they received: general anesthesia (G group, n=48), lumbar plexus, sciatic nerve and L1 paravertebral combined nerve blocks (N group, n=66). The operation time, anesthesia time, blood loss, urine volume, norepinephrine dose, length of intensive care unit (ICU) stay, hospital mortality and postoperative 6-month mortality were observed and compared between the two groups. The mini-mental state examination (MMSE) scores and the national institute of health stroke scale (NIHSS) scores were evaluated, respectively. Meanwhile, plasma D-Dimer and S100β levels were measured 1 d before surgery, 3 d and 7 d after surgery. Results: There were no significant differences in the baseline characteristics, operation time, anesthesia time, blood loss and length of ICU stay between the two groups (all P>0.05). Compared with group G, the dosage of norepinephrine [(86±23) μg vs (184±28) μg], hospital mortality [7.6% (5/66) vs 25.0% (12/48)] and postoperative 6-month mortality [12.1% (8/66) vs 31.3% (15/48)] were significantly decreased in group N, while the urine volume [(265±58) ml vs (160±55) ml] was significantly increased (all P<0.01). The MMSE scores (9.9±3.0 vs 14.6±2.4) in group N were significantly higher than those in the group G 3 d after surgery, while the NIHSS scores (15.3±3.2 vs 9.9±3.5), plasma D-Dimer [(10.8±2.5) mg/L vs (7.3±2.2) mg/L] and S100β levels [(326±35) ng/L vs (276±29) ng/L] were significantly lower than those in group G (all P<0.01). Conclusion: Combined nerve blocks can reduce the mortality of acute cerebral infarction patients undergoing hip replacement surgery, and improve the brain function and prognosis of the patients.

Bilateral femoral head osteonecrosis in a patient with metastatic breast cancer receiving long‑term zoledronic acid treatment: A case report

Bone-modifying agents (BMAs), including bisphosphonate and anti-receptor activator of NF-κB ligand (RANKL) antibodies, are effective in treating bone metastases. The present study is a case report on the efficacy and side effects of long-term treatment with zoledronic acid, a BMA, in a 57-year-old woman. The patient was diagnosed with concurrent stage IV triple-negative breast cancer and stage II colon cancer. The patient experienced complete remission of both these cancers following chemotherapy, zoledronic acid treatment and irradiation for breast cancer and surgery for colon cancer. The patient received long-term zoledronic acid treatment and has survived >7 years after her initial diagnosis. The patient subsequently reported bilateral hip pain that was diagnosed as osteonecrosis of the femoral head, after the presence of bone metastases was ruled out using magnetic resonance imaging. The patient underwent bilateral artificial hip joint replacements. After orthopedic surgery, the multiple distant metastases, including a brain metastasis, remained in complete remission. It is well established that BMAs, such as zoledronic acid, increase the risk of osteonecrosis of the jaw, but it is not well understood if they can increase this risk in other anatomical locations. The findings of the present case study suggested that while long-term use of BMAs may be effective in managing bone metastases, it may increase the risk of osteonecrosis in anatomical locations other than the jaw.

Significance of spinal sagittal balance for guiding acetabular prosthesis positioning

Since the concept of "safe area" put forward by Lewinnek, it has been widely recognized. While in recent years, many scholars have found that even if the acetabular prosthesis was placed on the "safe area", there were still many unexplained dislocation after total hip arthroplasty. And scholars began to question whether the "safe area" is really suitable for all patients. Spinal degeneration, deformity, lumbar fusion, etc. will lead to spine sagittal imbalance and changes in pelvic activity, which could lead to changes in acetabular orientation, and ultimately lead to edge loading, wear, impact, and even dislocation after total hip replacement. From the perspective of wear, impact and dislocation, it is determined by the functional positioning of the acetabular cup, not the anatomical positioning. The anatomical positioning and functional positioning of the neutral pelvic acetabular cup in the standing position can be considered equivalent. For pelvic rotation more than 20°, functional placement needs to be considered. In recent years, as the understanding of the internal relationship between the spine-pelvis-hip joint has become more and more profound, some scholars further classify the hip-spine relationship according to whether the spine is stiff or deformed, and propose corresponding acetabulums according to different types of hip-spine relationships The function of placement, so as to achieve a stable artificial hip joint. Therefore, it is of great significance to fully assess whether the patient's sagittal plane is balanced before surgery to guide artificial hip replacement surgery.

Effects of UHMWPE viscoelasticity on the squeeze‐film lubrication of hip replacements

AbstractMany studies have been performed to analyse the lubrication of artificial joints since the pioneer work by the late Professor Duncan Dowson. However, the viscoelastic deformation of one of the most widely used bearing materials, ultra‐high‐molecular‐weight polyethylene (UHMWPE), has only been considered recently. The described study attempted to investigate the effect of UHMWPE viscoelasticity on the elastohydrodynamic lubrication of such a soft artificial hip replacement under squeeze‐film motion. A transient viscoelastic squeeze‐film lubrication model of a typical hip implant was developed and solved to obtain the film thickness and pressure distributions. A boundary film thickness was adopted to consider the direct and indirect lubricant contact conditions. The results showed that the viscoelasticity had marked effects on the squeeze‐film lubrication performance of UHMWPE artificial hip joints. The minimum film thickness in the viscoelastic model was smaller than that of the elastic model, causing an earlier direct contact. However, the film thickness within the central contact region in the viscoelastic model was greater than that of the elastic model due to the restricted flow of the lubricant, therefore enhancing the lubricating effect and particularly with a short relaxation time and mechanical loss factor.

Characterization of UHMWPE- HAp coating produced by dip coating method on Ti6Al4V alloy

In the present study, the surface of Ti6Al4V alloy was coated with UHMWPE-HAp composite film by dip coating for hip joint material. Ti6Al4V alloy surfaces were firstly roughened by anodic oxidation to provide adhesion of the polymer coating on it. Scanning Electron Microscope (SEM) and Field Emission Scanning Electron Microscope (FE-SEM) results showed that the UHMWPE-HAp composite film was coated homogenously on the substrate and HAp particles were well bonded to the matrix. Functional groups and bond types of the composite coatings were detected by Fourier-transform Infrared Spectroscopy (FTIR). The melting temperature T m and the enthalpy of fusion (ΔH f ) of the UHMWPE and UHMWPE-HAp composite coatings were measured by differential scanning calorimetry (DSC). The crystallinities were calculated as 24.5% for pure UHMWPE and increased to 54.2% by addition of 1 wt%HAp particles into the UHMWPE matrix. Dry sliding wear properties of coatings against alumina ball were tested by a ball-on-disc tribometer in linear mode. Wear results revealed that UHMWPE-HAp composite coating on anodic oxidized Ti6Al4V alloy has an ultra-low friction coefficient of 0.06 compared to the friction coefficient of anodic oxidized Ti6AlV4 alloy at of 0.8 and with a favorable wear resistance 84% higher than oxide coated ones. This newly developed composite coating material shows potential use for artificial hip joint replacements. • Ti6Al4V alloy surfaces were coated by combination of porous TiO 2 layer and UHMWPE-HAp composite • Crystallinity of pure UHMWPE increased by 121% by incorporating of 1 wt.% HAp • Extreme increase in crystallinity provided excellent wear resistance with ultra low friction coefficient of 0.06 • No pilling -up of polymer film was observed after scratch test that is mainly due to the high sticking force of polymer film to the substrate. • UHMWPE-HAp composite coating on Ti6Al4V alloy has potential for application on acetabular cup of artificial hip joint replacements.

Investigation The Effect of Clearance and Body Weight on The Contact Pressure of Metal on PCU Hip Prosthesis using Finite Element Method

A common problem with artificial hip replacements is increased wear of the material in contact. Materials that are in contact result in contact pressure caused by the patient's daily activities so that it triggers wear. This study adopts a finite element method (FEM) to predict wear of the artificial hip joint, by studying the behavior of a hip joint prosthesis that has clearance under a certain load. The aim of this study was to observe contact as a function of clearance and body weight. The modeling uses metal as femoral head and polycarbonate urethane (PCU) material as the acetabular cup. Contact modeling as a hard material in contact with a deformable material. Four variations of clearance (0.001, 0.005, 0.01, 0.016) and three variations of body weight (500N, 700N, and 1000N) were used in this study. The simulation results show that the lower the distance and weight, the lower the contact pressure.

Position and Stability of the Prosthesis in Severely Deformed DDH Artificial Total Hip Replacement

Objectives: To analyze the correlation of prosthesis position selection during total hip replacement with clinical short and middle-term effects of Crowe III and Crowe IV hip dislocation. Methods: Clinical data of 28 cases of dysplasia and dislocation of the hip joint combined with severe osteoarthritis were retrospectively analyzed. During 2-year follow-up, patients were rechecked by imaging regularly to analyze the imaging changes of acetabulum prosthesis position and bone graft fusion. Harris hip score was used to assess the recovery of hip function. The correlation of prosthesis position and short and middle-term effects was analyzed. Results: The filling rate of medullary cavity of prosthesis was above 75%. The initial position was fixed and stable. The stability rate of femur-prosthesis interface reached 100%. Compared with pre-replacement, hip function was significantly improved at 6 months post surgery (p &lt; 0.05). Conclusion: These results indicate that total hip replacement for Crowe III and Crowe IV hip dislocation can effectively reconstruct the acetabulum, recover hip function, and stabilize prosthesis. Total hip replacement is characterized by good filling rate, high stability of femoral prosthesis interface, and stable initial fixation. The clinical repair effect is strongly associated with the position of the prosthesis.

Clinical Outcomes of Artificial Total Hip Arthroplasty for Proximal Femoral Bone Tumors

Objective: To investigate the clinical outcome of artificial hip replacement for proximal femoral bone tumors. Methods: One hundred patients with proximal femur bone tumors admitted to the hospital for treatment from June 2018 to May 2020 were selected and divided into a control group and an experimental group of 50 patients each using central randomization. The control group received conventional treatment and the experimental group underwent artificial total hip arthroplasty, and the results of treatment were compared between the two groups. Results: The operative time and hospitalization time of the experimental group were shorter than that of the control group, and the blood loss was less than that of the control group; after the replacement surgery, the range of flexion and extension, internal and external rotation activity and abduction activity scores were better than those of the control group; and the total incidence of adverse reactions in the experimental group was 6.0%, which was significantly lower than that of the control group (14.0%). By comparing the treatment effects of the two groups, the differentiation was significant, and P&lt;0.05 was statistically significant. Conclusion: Artificial hip arthroplasty can effectively treat proximal femoral tumors, shorten operative time, hospitalization time and intraoperative bleeding, and alleviate patients' therapeutic pain, which has good promotion value in clinical practice.