Advances in Orthopedics最新文献

{"title":"Recent Biomimetic Approaches for Articular Cartilage Tissue Engineering and Their Clinical Applications: Narrative Review of the Literature","authors":"Hamza Abu Owida","doi":"10.1155/2022/8670174","DOIUrl":"https://doi.org/10.1155/2022/8670174","url":null,"abstract":"Since articular cartilage is lacking blood vessels and nerves, its capacity to heal is extremely limited. This means that ruptured cartilage affects the joint as a whole. A health issue known as osteoarthritis can develop as a result of injury and deterioration. Osteoarthritis development can be speeded up by the widespread deterioration of articular cartilage, which ranks third on the list of musculoskeletal disorders requiring rehabilitation, behind only low back pain and broken bones. The current treatments for cartilage repair are ineffective and rarely restore full function or tissue normalcy. A promising new technology in tissue engineering may help create functional cartilage tissue substitutes. Ensuring that the cell source is loaded with bioactive molecules that promote cellular differentiation and/or maturation is the general approach. This review summarizes recent advances in cartilage tissue engineering, and recent clinical trials have been conducted to provide a comprehensive overview of the most recent research developments and clinical applications in the framework of degenerated articular cartilage and osteoarthritis.","PeriodicalId":7358,"journal":{"name":"Advances in Orthopedics","volume":"2022 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41345665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical Outcomes and Predictors of Patients with Fracture in Debre Markos Comprehensive Specialized Hospital, North West Ethiopia: A Prospective Cohort Study","authors":"Beminet Yimenu, Belayneh Mengist","doi":"10.1155/2022/3747698","DOIUrl":"https://doi.org/10.1155/2022/3747698","url":null,"abstract":"Background Fracture continues to be a major public health concern in many parts of the developing world that results in several consequences and complications including lifelong morbidity and mortality. This study aimed to assess clinical outcomes of patients following fracture in Debre Markos Comprehensive Specialized Hospital, North West Ethiopia. Methods An institution-based prospective cohort study was conducted from November 2020 to July 2021 among 207 fracture patients (69 visited traditional bone setter and 138 did not visit traditional bone setter). Data were collected through face-to-face interviews, physical examinations, and radiological investigations. Data were entered using Epi-Data version 3.1 and analysis was done using STATA 14 statistical software. Descriptive statistics were summarized using mean, median, standard deviation, and percentage and presented in tables and figures. The generalized linear model was fitted to identify the risks of the outcome variable. Risk Ratio with its 95% confidence interval was used and factors with a P-value less than 0.05 were considered as a statistically significant association. Result The mean age of the participants was 37.5 ± 13.6 years and two-thirds of the participants were males. Nearly half of the patients 92 (44%), 50 (54%) from the exposed and 42 (46%) from the nonexposed group, were delayed getting treatment from the hospital. The majority of the patients had been treated with Plaster of Paris immobilization (55%) followed by fixation (15%) and a combination of both (12%). Nearly half of the participants (48%), 74% from the exposed and 35% from the nonexposed group, developed complications during the follow-up period. The commonest complication was joint stiffness (45%) followed by osteoarthritis (21%). The risk of fracture-related complications among patients who did not visit traditional bone setter was decreased by 54% as compared to visitors (RR 0.46; 95% CI: (0.35, 0.60)) Conclusion The magnitude of complications following the fracture is found to be high and the risk of complications among patients who visited traditional bone setters increased significantly. Therefore, prevention measures should be strengthened and integration between hospitals and traditional bone setters should be made so that basic training on fractures management will be given.","PeriodicalId":7358,"journal":{"name":"Advances in Orthopedics","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49334265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Patellofemoral Pain Syndrome in Young Female Athletes: A Case-Control Study","authors":"V. Pavone, A. Vescio, Flora Maria Chiara Panvini, Ludovico Lucenti, Alessia Caldaci, M. Sapienza, F. Canavese, G. Testa","doi":"10.1155/2022/1907975","DOIUrl":"https://doi.org/10.1155/2022/1907975","url":null,"abstract":"Background Patellofemoral pain syndrome (PFPS) is the most common cause of anterior knee pain in children and adolescents, and it is characterized by highly limiting, recurrent, frontal pain. Objectives The purpose of the study is to assess the incidence and onset of PFPS in the young female athletes and to compare it to healthy individuals. Methods Between 2017 and 2019, 51 subjects were reviewed and divided in three groups: rhythmic gymnastics athletes (RG; 21 individuals, mean age: 13.8 ± 3.6 years), basketball athletes (BG; 17 individuals, mean age: 14.2 ± 3.1 years), and control group (CG; 13 individuals, mean age: 14.5 ± 4.3 years). All patients underwent physical examination including patellar glide, tilt, grind and apprehension tests, tiptoe and jack tests, Coleman block, and navicular drop tests. The clinical and functional outcomes of the subjects were assessed using the Kujala patellofemoral score (KPS). Results In RG patients were recorded 66.7% of normal footprint (NF), 9.5% of cavus feet (FCF), and 23.8% of flatfeet (FFF); 14.8% patellar positive tests, KS = 98.6 ± 13.7. BG patients had 70.6% of NF, 11.8% FCF, and 17.6% of FFF; 23.5% patellar positive tests, KS = 98.3 ± 12.4. CG patients had 61.5% of NF, 7.7% of FCF and 30.8% of FFF; 15.4% patellar positive tests, KPS = 98,9 ± 15.3. No statistically significance was found between the three cohorts of patients. Conclusions PFPS is a common pathology; muscular imbalance and overuse could exacerbate pain and discomfort in young female athletes. Our findings show high type and level of sport activity are not related to increase frequency of clinical symptoms related to PFPS.","PeriodicalId":7358,"journal":{"name":"Advances in Orthopedics","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42494331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fixator-Assisted Nailing for Femur Neck Fracture Nonunion: A Case Series Study","authors":"Majdi Hashem, Mohammad S. Al-Tuwaijri","doi":"10.1155/2022/5676144","DOIUrl":"https://doi.org/10.1155/2022/5676144","url":null,"abstract":"Background Femoral neck fractures in young adults tend to be a result of high-energy trauma with a common pattern of Pauwels type III fracture, and they require timely and meticulous diagnosis and management. The objective of this study was to assess the clinical and radiological outcomes of the fixator-assisted nailing technique for managing femur neck fracture nonunion. Methods. This was a case series study of 16 patients with nonunion femoral neck fractures treated via a fixator-assisted nailing technique. Our inclusion criteria comprised the inclusion of any patient between the ages of 14 and 60 years old with a neglected neck of femur fracture or nonunion of the femur neck. In addition, we only included patients without further posttreatment trauma and without known metabolic diseases. The conditions that were excluded from this study included hip joints with preexisting osteoarthritis, radiographic evidence of avascular necrosis of the femoral head, and associated ipsilateral acetabulum fracture or fracture-dislocation. The fracture characteristics that were selected for the fixator-assisted nailing (FAN) technique were clear signs of pseudoarthrosis (such as sclerosis, clear fracture line defects, and failure of implants), in addition to evidence of varus malalignment. All fractures were Pauwels type III. Radiographs of the pelvis with both hips and a posteroanterior (PA) view of the injured hip were taken. Full weight bearing was allowed in all the patients from the first day postoperatively. Physical therapy was started for pain reduction modalities, stretching, and abductor strengthening. Results Union of the femur neck fracture and osteotomy site was achieved in all patients. An excellent functional status after four months of follow-up was found based on a modified Harris hip score questionnaire. At follow-up, no patient was suffering from pain or flexion contracture. Preoperative limb length discrepancy (LLD) (cm) was 1.8 ± 0.8 cm and postoperative was 0 ± 0.1 cm, p < 0.001. Preoperative neck-shaft angle (NSA) (o) was 85.6 ± 4.4 and postoperative was 126.9 ± 2.5, p < 0.001. Preoperative Pauwels angle (o) was an average of 50.4 ± 5.9 and postoperative was 31.3 ± 2.5, p < 0.001. Conclusion Our study indicates that FAN has a high success rate in young patients with nonunited femoral neck fractures.","PeriodicalId":7358,"journal":{"name":"Advances in Orthopedics","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48887315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Satisfactory Functional Outcome and Significant Correlation with the Length of Haglund's Deformity after Endoscopic Calcaneoplasty: A Minimum 4-Year Follow-Up Study","authors":"Hossam Fathi Mahmoud, Walid Feisal, Fahmy Samir Fahmy","doi":"10.1155/2022/7889684","DOIUrl":"https://doi.org/10.1155/2022/7889684","url":null,"abstract":"Background Haglund's syndrome is a posterosuperior calcaneal prominence with posterior heel pain causing functional disability to the patient. Operative treatment is indicated after failure of conservative measures and includes resection of the bony hump along with retrocalcaneal bursectomy. This study aimed to evaluate the functional outcome and degree of patient satisfaction after endoscopic resection of Haglund's deformity with assessment of correlation with the length of bony exostosis. Methods Seventeen patients (21 feet) with a mean age of 44.7 ± 5.1 years were included in this study. Six females and 11 males underwent endoscopic calcaneoplasty. Clinical outcome evaluation included the assessment of the visual analog scale (VAS) and the American Orthopedic Foot and Ankle Society score (AOFAS). The preoperative and postoperative lengths of bony exostosis were measured radiologically. The paired t test and the Wilcoxon signed-rank test compared the preoperative and final postoperative means. P < 0.05 was considered statistically significant. Results The mean follow-up period was 56.4 ± 5.1 months. Statistically significant improvements in the preoperative mean of AOFAS (from 55.7 ± 9.3 to 94.3 ± 7.1) and VAS (from 8.1 ± 1.4 to 0.7 ± 1.04) at the final follow-up were noted (P < 0.0001). There was a statistically significant correlation between clinical scores (AOFAS and VAS) and the final postoperative length of the bone above parallel pitch lines (PPLs). The patients were satisfied and returned to their previous activities without reporting major morbidities except one patient who had mild pain with exertion. Conclusion Endoscopic calcaneoplasty is a safe, less invasive surgical procedure for the management of Haglund's syndrome after failure of conservative treatment. It provided a satisfactory clinical result without serious complications at a minimum 4-year follow-up.","PeriodicalId":7358,"journal":{"name":"Advances in Orthopedics","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48464138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Humeral Capitellum Fractures in Adolescents: A Study of 6 Cases Treated by Open Reduction and Internal Fixation with Bioabsorbable Nails","authors":"Łukasz Wiktor, R. Tomaszewski","doi":"10.1155/2022/4012125","DOIUrl":"https://doi.org/10.1155/2022/4012125","url":null,"abstract":"Purpose The purpose of our study was to evaluate the clinical outcome following open reduction and internal fixation of humeral capitellum fractures in adolescents and to assess the usefulness of bioresorbable implants in that procedure. Due to the rarity of these fractures, there are not many studies dealing with the problem in the literature. Methods We retrospectively evaluated a group of 6 skeletally immature patients aged 10.6–15.3 treated at our department from January 2015 to December 2021. Four type I and two type IV were diagnosed based on the Bryan and Morrey classification. Our patients underwent an open reduction and internal fixation of coronal shear fractures with the use of SmartNail®. Results All patients were satisfied with the treatment outcome and had full pronation and flexion after surgery. Two patients presented minor deficits of extension and supination compared with the contralateral elbow. At the one-year follow-up, all patients scored 100 on the Mayo Elbow Performance Score. Conclusions Correct diagnosis and early surgical intervention in humeral capitellum fractures are crucial. That fractures should be anatomically reduced with no articular cartilage damage in order to prevent osteoarthritis. Based on our experience, SmartNail® implant is accurate for the osteochondral fragment fixation.","PeriodicalId":7358,"journal":{"name":"Advances in Orthopedics","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44514340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Cost-Utility Analysis of Robotic Arm-Assisted Total Hip Arthroplasty: Using Robotic Data from the Private Sector and Manual Data from the National Health Service","authors":"N. Clement, P. Gaston, D. Hamilton, A. Bell, P. Simpson, G. Macpherson, J. Patton","doi":"10.1155/2022/5962260","DOIUrl":"https://doi.org/10.1155/2022/5962260","url":null,"abstract":"Purpose The aim was to assess the cost-effectiveness of robotic arm-assisted total hip arthroplasty (rTHA) compared with manual total hip arthroplasty (mTHA) and to assess the influence of annual volume on the relative cost-effectiveness of rTHA. Methods A database of both rTHA (n = 48 performed in a private centre) and mTHA (n = 512 performed in the National Health Service) was used. Patient demographics, preoperative Oxford hip score, forgotten joint score, EuroQol 5-dimensional 3-level (EQ-5D), and postoperative EQ-5D were recorded. Two models for incremental cost-effectiveness ratios using cost per quality-adjusted life year (QALY) for rTHA were calculated based on a unit performing 100 rTHAs per year: 10-year follow-up and a lifetime time horizon (remaining life expectancy of a 69-year-old patient). Results When adjusting for confounding factors, rTHA was independently associated with a 0.091 (p=0.029) greater improvement in the EQ-5D compared to mTHA. This resulted in a 10-year time horizon cost per QALY for rTHA of £1,910 relative to mTHA, which increased to £2,349 per QALY when discounted (5%/year). When using the 10-year time horizon cost per QALY was approximately £3,000 for a centre undertaking 50 rTHAs per year and decreased to £1,000 for centre undertaking 200 rTHAs per year. Using a lifetime horizon, the incremental unadjusted cost per QALY gained was £980 and £1432 when discounted (5%/year) for rTHA compared with mTHA. Conclusions Despite the increased cost associated with rTHA, it was a cost-effective intervention relative to mTHA due to the associated greater health-related quality of health gain, according to the EQ-5D outcome measure.","PeriodicalId":7358,"journal":{"name":"Advances in Orthopedics","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41572345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sacroiliitis: A Review on Anatomy, Diagnosis, and Treatment.","authors":"Anderson Lee,&nbsp;Monik Gupta,&nbsp;Kiran Boyinepally,&nbsp;Phillip J Stokey,&nbsp;Nabil A Ebraheim","doi":"10.1155/2022/3283296","DOIUrl":"https://doi.org/10.1155/2022/3283296","url":null,"abstract":"<p><strong>Introduction: </strong>Sacroiliitis is an inflammation of one or both of the sacroiliac (SI) joints, most often resulting pain in the lower back that can extend down the legs. Pain arising from the SI joint can be difficult to diagnose and treat due to the intricate surrounding ligamentous structure, nerve innervation, and its role in transferring weight from the upper body to the lower limbs. SI joint dysfunction accounts for up to 25% of cases of lower back pain and has a debilitating effect on patient functionality. This review aims to provide comprehensive coverage of all aspects of SI joint pain, with a specific focus on differential diagnosis and treatment.</p><p><strong>Methods: </strong>Current literature on SI joint pain and inflammation, other etiologies of lower back pain, and new treatment options were compiled using the databases PubMed and Cochrane and used to write this comprehensive review. There were no restrictions when conducting the literature search with regard to publication date, study language, or study type.</p><p><strong>Results: </strong>The diagnosis protocol of SI joint pain arising from sacroiliitis usually begins with the presentation of lower back pain and confirmatory diagnostic testing through fluoroscopy joint block. Reduction in pain following the anesthetic is considered the golden standard for diagnosis. The treatment begins with the conservative approach of physical therapy and analgesics for symptom relief. However, refractory cases often require interventional methods such as corticosteroid injections, prolotherapy, radiofrequency ablation, and even SI joint fusion surgery.</p><p><strong>Conclusion: </strong>SI joint pain is a complex problem that can present with varying patterns of pain due to uncertainty regarding its innervation and its prominent surrounding structure. It is therefore especially important to obtain a thorough history and physical on top of diagnostic tests such as a diagnostic block to properly identify the source of pain. Conservative treatment options with physical therapy and analgesics should be attempted first before interventional strategies such as ablation, injections, and prolotherapy can be considered. SI joint fusion surgery is a solution to cases in which previous methods do not provide significant relief.</p>","PeriodicalId":7358,"journal":{"name":"Advances in Orthopedics","volume":"2022 ","pages":"3283296"},"PeriodicalIF":1.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9812593/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10507396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of the Hook Plate versus TightRope System in the Treatment of Acute Type III Acromioclavicular Dislocation.","authors":"Abdulrahim Dündar,&nbsp;Deniz İpek","doi":"10.1155/2022/8706638","DOIUrl":"https://doi.org/10.1155/2022/8706638","url":null,"abstract":"<p><strong>Introduction: </strong>The objective of this study is to compare the effectiveness of the clavicular hook plate (HP) technique and the minimally invasive coracoclavicular (CC) fixation with a TightRope (MITR) procedure in treating acute unstable distal clavicle dislocation.</p><p><strong>Method: </strong>MITR (minimally invasive TightRope) group had 21 patients, and the open reduction and internal fixation (HP) group included 23 patients. Researchers compared MITR and HP (hook plate) outcomes for the treatment of acute type III AC joint dislocation in a retrospective analysis. The patients were followed up at 1 3, 6, and 12 months postoperatively. Complications were analyzed such as redislocation, fractures, implant-related complications, or subacromial erosion. For the clinical outcomes, the visual analog scale (VAS) (0: no pain, 10: worst possible pain), Constant-Murley score (CMS) (100: no pain, 0: maximum pain), the average satisfaction score with their current shoulder function (range: 0-10), and the University of California at Los Angeles Shoulder score (UCLA) (>27 good/excellent <27 fair/poor) were recorded at the last follow-up.</p><p><strong>Result: </strong>There were 21 sufferers in the MITR group, which comprises 19 males and 2 females and 23 individuals in the HP group (20 men and 3 women), with average ages of 43.9 and 39.2, respectively. Age, sex, laterality, and the interval between injury and surgery did not significantly differ between the two groups (0.357, 0.792, 0.432, and 0.55, respectively). No statistically significant difference was found between the groups in terms of the VAS score and CMS score at one year postoperatively. The mean CCD at the initial trauma and last follow-up was not significantly different between the MITR and HP groups (<i>p</i>=0.365, <i>p</i>=0.412 respectively).</p><p><strong>Conclusion: </strong>For treating acute type III AC dislocations, the minimally invasive TightRope (MITR) system and the hook plate technique were great options. However, the minimally invasive TightRope system showed further benefits such as reduced reoperation for implant removal and reduced risk of subacromial distal clavicle osteolysis.</p>","PeriodicalId":7358,"journal":{"name":"Advances in Orthopedics","volume":"2022 ","pages":"8706638"},"PeriodicalIF":1.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9744602/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10363067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kinematic and Radiographic Evaluation of Acromioclavicular Reconstruction with a Synthetic Ligament.","authors":"Rafael F Escamilla,&nbsp;Chad Poage,&nbsp;Scott Brotherton,&nbsp;Toran D MacLeod,&nbsp;Charles Leddon,&nbsp;James R Andrews","doi":"10.1155/2022/7144209","DOIUrl":"https://doi.org/10.1155/2022/7144209","url":null,"abstract":"<p><strong>Purpose: </strong>The optimal surgical technique for unstable acromioclavicular (AC) and coracoclavicular (CC) joint injuries has not yet been established. The biomechanical and radiographic effect of the LockDown device, a synthetic ligament for AC joint reconstruction, was evaluated to assess the optimal surgical technique for unstable AC and CC joint injuries. It was hypothesized that the LockDown device would restore AC joint kinematics and radiographic stability to near native values.</p><p><strong>Methods: </strong>Three fresh frozen cadaveric torsos (6 shoulders) modelled CC joint motion in their \"native,\" \"severed,\" and \"reconstructed\" states. The effects of stressed and unstressed native, severed, and reconstructed conditions on AC separation and CC distances in anteroposterior, mediolateral, and inferosuperior directions during shoulder abduction, flexion, and scaption were assessed. The analysis of variance (<i>p</i>, 0.05) was used to compare CC distance and peak AC distance in anteroposterior, mediolateral, and inferosuperior directions during shoulder flexion, abduction, and scaption measurements among native, severed, and reconstructed states with unstressed and stressed Zanca radiographic views.</p><p><strong>Results: </strong>From radiographic analyses, the CC distance was significantly greater (<i>p</i>=0.001) across the surgical state in stressed versus unstressed views. Mean difference between stressed and unstressed views was 1.8 mm in native state, 4.1 mm in severed state, and 0.9 mm in reconstructed state. The CC distance was significantly greater in the \"severed\" state (10.4 mm unstressed; 14.5 mm stressed) compared to the \"native\" state (<i>p</i>=0.016) (6.5 mm unstressed; 8.3 mm stressed) and compared to the \"reconstructed\" state (<i>p</i>=0.005) (3.1 mm unstressed; 4.0 mm stressed) and significantly less (<i>p</i>=0.008) in the \"reconstructed\" state compared to the \"native\" state. CC distances decreased from native to reconstructed, an average of 3.3 mm for unstressed and 4.3 mm for stressed. On average, peak AC joint separation distance in anteroposterior, mediolateral, and inferosuperior directions during shoulder-abduction, flexion, and scaption was shown to be restored to 11.5 mm of native values after reconstruction with LockDown device.</p><p><strong>Conclusion: </strong>Reconstruction of AC joint with LockDown synthetic ligament restores motion of clavicle and acromion to near native values, thereby decreasing scapular dyskinesis and enhancing AC joint stability.</p>","PeriodicalId":7358,"journal":{"name":"Advances in Orthopedics","volume":"2022 ","pages":"7144209"},"PeriodicalIF":1.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9167124/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10601616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}