Orthopaedic Institute Research Articles

Patients' experience on waiting for spinal arthrodesis: a qualitative study.

A number of studies have explored patients' subjective experience of waiting for spinal surgery, however, they did so through an investigation conducted post-operatively. Thus, the aim of this study was to explore the experience of patients while still on the waitlist for lumbar spinal arthrodesis. This qualitative study of semi-structured interviews was conducted at an orthopedic research institute in Italy. The interview track was developed by a team of professionals (physiotherapists, orthopedic surgeon, psychologist) and consisted of 40 questions. Fifteen patients, 10 females and 5 males aged between 23 and 80years, waiting for spinal arthrodesis were interviewed. The interviews were performed, transcribed and analyzed by the multiprofessional team through thematic analysis using a reflexive approach. Five main themes were generated: (1) Impact of persistent pain on patients' physical and psychological functioning; (2) Fear of the unknown and uncertainties; (3) Hope and regaining normality; (4) The impact of the unpredictability of the waiting time; (5) Need for better communication and information on the care pathway. Two minor themes were also produced. These findings highlighted that patients on the waiting list for spinal arthrodesis need more certainty about waiting times, better communication with hospital staff, more thorough information about their care pathway. This could help patients feel more confident and may lead to more adequate expectations before surgery. The study protocol was registered on ClinicalTrials.gov database on 14/03/2022 with ID number NCT06323694.

3D Surgical Planning for Customized Devices in Orthopaedics: Applications in Massive Hip Reconstructions of Oncological Patients

This study investigates the morphological impact of using three-dimensional (3D) printed custom implants in surgical hip reconstruction compared to the conventional bone graft and standard size implant methods. An amount of 16 patients at the Rizzoli Orthopaedic Institute who underwent hip reconstruction surgery for tumors involving the P2 pelvis region were selected using stratified sampling. Half of them were randomly selected to receive 3D-printed implants, and the other half were selected to receive standard implants with bone grafts. Six months post-surgery, computed tomography (CT) scans were used to identify the hip joint center of rotation and to measure greater the trochanter offset and acetabular inclination angle. These CT scans were also used to construct a 3D model of the pelvis for 3D measurements. The results show no significant differences in accuracy, using Student’s T-test and Mann–Whitney U-test (p-value > 0.05), between the two methods for reconstructing the hip joint center of rotation or greater trochanter offset. However, 3D-printed implants showed statistically significant greater precision, using Student’s T-test (p-value < 0.05), in reconstructing the acetabular inclination angle compared to the conventional bone graft and standard-sized off-the-shelf implants. This superior precision reduces the risk of impingement of the femur implant neck with the acetabulum implant cup, which directly relates to improved implant survivorship. These findings support the continued exploration of 3D printing technology for personalized orthopedic solutions.

EL HÁBITO DE FUMAR Y SU INFLUENCIA EN LA CONSOLIDACIÓN ÓSEA: UNA REVISIÓN INTEGRADORA

Smoking is considered one of the risk factors for various diseases, not only related to the respiratory system but also influencing the physiological processes of various organs and body systems. This article aims to deepen the understanding of the effects of smoking on bone healing by analyzing its molecular, cellular, and clinical bases. This process is subject to possible direct or indirect interferences from chemical substances such as nicotine. It is important to note that, besides conventional cigarettes, there is also indiscriminate use of electronic cigarettes, which, according to an analysis conducted by Pérez and Duarte (2022), have considerably higher nicotine levels than traditional cigarettes. Another study conducted by González et al. (2021) highlights the increasing popularity of these devices among young people, underscoring the importance of preventive measures. According to the National Institute of Traumatology and Orthopedics (INTO), inhaling tobacco smoke increases bone tissue healing time by 60%, thus delaying the body's ability to heal injuries and compromising bone absorption. The clinical repercussions of smoking on the quality and speed of bone recovery after fractures and orthopedic procedures are identified to improve understanding and develop specific clinical strategies and interventions for smoking patients. The specific objectives of this research were to: investigate the molecular and cellular mechanisms of the bone healing process, analyze the effects of smoking on the quality of the formed tissue, evaluate the influence of smoking on the bone healing time in patients after fracture or orthopedic surgery, and finally propose therapeutic strategies and preventive measures to improve bone healing. To this end, a bibliographic search was conducted on articles relevant to the topic using various means. The selection of articles was based on three stages, choosing those that met the inclusion criteria. During the development of this article, it is observed that smoking is an extended and ancestral practice, being a constant and emerging health problem. Additionally, it is considered a modifiable risk factor for decreasing bone density. In conclusion, the need for specific strategies to address complications in bone healing in smoking patients is highlighted.

Factors associated with favourable short-term non-operative treatment outcomes among patients with degenerative cervical spine disease at Muhimbili Orthopaedic Institute

Factors associated with favourable short-term non-operative treatment outcomes among patients with degenerative cervical spine disease at Muhimbili Orthopaedic Institute

Orthopaedic surgical treatment waiting time for acute musculoskeletal trauma patients attended at Muhimbili Orthopaedic Institute, Dar-Es-Salaam

Orthopaedic surgical treatment waiting time for acute musculoskeletal trauma patients attended at Muhimbili Orthopaedic Institute, Dar-Es-Salaam

Treatment of a patient with Ollier’s disease

The objective was to demonstrate a clinical case of an adult patient with Olier’s disease (enchondromatosis), severe hand deformity, and its treatment in orthopedic department. Patient K., 71 years old, was treated with severe deformation of the left hand due to Ollier’s disease in Ya. L. Tsiv’yan Novosibirsk Research Institute of Traumatology and Orthopedics in 2017. The patient underwent a one-stage multi-stage surgical intervention with removal of the endochondromas of the 1st, 2nd, 4th and 5th fingers, bone and tendon grafting of the defects.In 5 years after surgery, patient notes a high degree of satisfaction with the treatment. At the control visit, the preservation of the intraoperatively achieved result was established without signs of recurrence of the process or signs of malignancy. The achieved result led to the improvement of motor skills, restored a number of social self-service functions.Due to the high risks of recurrence and malignancy of the process, patients with Olier’s disease require close monitoring by clinicians. Surgical treatment of benign forms of the disease involves the implementation of an organ-preserving intervention with the reconstruction of bone and tendon ligament defects. The main goals of the intervention in this case were a removing of the pathological substrate and the improvement of hand function.

Comments on "Readability Analysis of Patient Education Material on Rotator Cuff Injuries From the Top 25 Ranking Orthopedic Institutions".

Comments on "Readability Analysis of Patient Education Material on Rotator Cuff Injuries From the Top 25 Ranking Orthopedic Institutions".

Vittorio Putti's decalogue of fractures: a historical perspective in orthopaedic trauma practice.

This article explores the historical significance and lasting impact of Vittorio Putti's "Decalogue of Fractures" in the field of orthopedic trauma. Putti served as director of the Rizzoli Orthopedic Institute in Bologna from 1915 until his death in 1940 and was one of the founding members of the "Société Internationale de Chirurgie Orthopédique et de Traumatologie" (SICOT). He also played a key role in organizing the third SICOT World Congress, held in Bologna in 1936.The "Decalogue" distills Putti's extensive clinical experience and remains a cornerstone of modern traumatology. He developed the *Decalogue* to enhance the principles of fracture treatment, addressing what he viewed as suboptimal outcomes. This article examines each of the tenets, emphasizing their influence on contemporary fracture management and the evolution of orthopaedic trauma care. It also reflects on Putti's forward-thinking vision for a comprehensive trauma network, underscoring his belief in the critical importance of specialization and centralization to ensure efficiency, quality, and consistency, principles that continue to shape orthopaedic practice today.

Identifying Predictors of Successful Conversion from OREF Grants to Extramural Federal Funding Among Orthopaedic Surgeons

Background: Musculoskeletal diseases are a major contributor to global human disability, but research in this area of medicine contends with chronic underfunding in the United States, receiving <2% of the National Institutes of Health (NIH) budget. The Orthopaedic Research and Education Foundation (OREF) serves as a vital nongovernmental organization, providing essential support for orthopaedic research. This study investigated the translation of various OREF grants into successful extramural federal funding discerning the clinician demographics and OREF award characteristics associated with increased chances of securing federal grants. Methods: We included OREF data from 1994 to 2020, and federal funding from the NIH, the U.S. Department of Defense (DoD), the National Science Foundation (NSF), and the Agency of Healthcare Research and Quality (AHRQ) was queried using publicly available databases: the NIH RePORTER, the DoD Defense Technical Information Center, the NSF search engine, and the AHRQ search engine. Clinician demographics and training were collected from the American Academy of Orthopaedic Surgeons roster and institution departmental websites. The successful translation of OREF grants into federal awards was assessed based on clinician gender, training, and specialty, as well as OREF grant mechanisms and characteristics; multivariable logistic regression was used to determine the likelihood of federal translation based on these predictor variables. Results: Three hundred and forty-eight OREF grants were awarded to 319 different clinicians, 23.5% of whom successfully translated their award into a federal grant. Notably, recipients of the OREF Career Development Grant (CDG) demonstrated a 48.4% translation rate to federal funding. The federal return on investment for all of the OREF grants averaged 503%, translating approximately $34 million in OREF awards into >$200 million in federal funding. Logistic regression revealed that recipients who received CDG funding, as well as orthopaedic oncologists, were more than 3 times as likely to secure federal funding than those who received grants with other mechanisms and those in other subspecialties. Conclusions: OREF fills a vital role in supporting budding orthopaedic research careers, ensuring the field’s competitiveness for federal awards on a national scale. The success rates, particularly for CDG recipients, highlight OREF’s effectiveness in identifying promising surgeon-scientists.

Impacting trauma care in resource-limited settings: Lessons learned from Tanzania's web-based trauma registry initiatives.

Trauma significantly impacts Tanzanian healthcare. Lacking standardized hospital-based minimal trauma data sets places further challenges for policymakers. In other resource-limited countries, implementing trauma systems and registries has reduced injury mortalities. In 2013, we introduced an electronic trauma registry, iTRAUMATM at the Tanzanian Muhimbili Orthopedic Institute (MOI) but noted several drawbacks. In 2023, we introduced a robust web-based trauma registry platform. This study assesses the feasibility and utility of implementing the platform at MOI and summarizes challenges, lessons, and results compared to existing systems. This prospective observational study involved clinicians collecting data directly on the platform at the point-of-care, following specific training. Semi-structured interviews with local stakeholders identified challenges and areas for improvement. Data were reported from July to December 2023. Data from 2930 patients showed 59% of injuries were from road traffic collisions (RTCs), with 43% of patients arriving at MOI by non-ambulances. Our findings show that non-ambulance arrivals were associated with higher injury severity (p<0.026), mortalities (p<0.017), and delayed hospital arrival (p<0.004), underscoring the critical role of prompt transport in trauma management. The new platform identified trauma care gaps, with a mean arrival-to-care time of 29.89min, prompting trauma training at MOI to enhance clinician capacities. It also demonstrated superiority over existing systems by improving data completeness, timeliness, and usability. Challenges included gaining support for the platform's functionality, technology integration, and navigating administrative changes. With continued communication, stakeholder acceptance and support were achieved. The web-based platform has become MOI's standard trauma database, demonstrating its feasibility and utility. It overcame the existing challenges of data completeness, timeliness, and usability for policymaking. Positive feedback has prompted plans to expand the platform to other hospitals, benefiting clinical benchmarking and trauma preventive efforts. Ensuring sustainability requires involvement from the Ministry of Health, ongoing training, functionality enhancements, and strengthened global partnerships.

Enhancing the Efficiency of Scientific Activities in a Medical Organization within the Scope of the Process Approach

The article substantiates the principal trends of research optimization in medical organizations with the use of process-oriented management methods (the case of Ya.L.Tsivyan Novosibirsk Research Institute of Traumatology and Orthopedics). The research is based on the principle of the process approach. It is one of the fundamental principles of the total quality management model that is the most effective management concept based on quality. When developing a system for organizing scientific workflows based on the process approach, planning as well as a methodology of academic research play the key role. For all stages of research activities, processes of planning tasks, their fulfilment and reporting with the determination of responsibility for all types of work being performed and with the development of forms of necessary documents used in the organization of scholarly activities have been framed; approaches to the output of scientific products have been standardized and process regulations have been developed for each of its types. The development of processes is carried out on the basis of the requirements of regulatory documentation, taking into account modern approaches to the organization of research activities. Moreover, all documents containing requirements for processes are reviewed and updated at regular intervals, taking into account changes in regulatory guidance. The development and implementation of a system for organizing scientific activities based on the process approach allow a scientific medical institution to achieve compliance with modern requirements for conducting academic research, as well as to improve the quality and efficiency of scientific activities. The accumulated successful experience can be used in organizations that seek to increase the effectiveness of their scientific activities and meet contemporary requirements for their results.

Revision Knee Arthroplasties Done at Muhimbili Orthopaedic Institute, Tanzania, between 2007 and 2018

Revision Knee Arthroplasties Done at Muhimbili Orthopaedic Institute, Tanzania, between 2007 and 2018

Radial nerve injuries in humeral fractures: case series and medico-legal implications

IntroductionRadial nerve injury following humeral fracture is the most common peripheral nerve injury associated with long bone fractures. The purpose of this study is to analyse our treatment protocols and long-term outcomes of humeral fractures associated with radial nerve injury which were surgically treated at the I.R.C.C.S. Orthopaedic Institute Galeazzi (Milan, Italy). Materials and MethodsThe study was designed to evaluate retrospectively 30 patients, 15 men and 15 women, affected by humeral fracture associated with radial nerve palsy, treated at Orthopaedic Institute Galeazzi (Milan, Italy) from 1st January 2012 to 31st December 2022. Radial nerve injury was diagnosed based on the clinical evaluations of the neurological deficit. The cases were analyzed for any documented sensory impairment, wrist extensor weakness and/or finger weakness, with or without a “drop-hand” posture described in the patient's medical record at admission or throughout the hospital stay. Patients with pathological humeral shaft fractures were excluded. All patients, accounted for the study, were operated under general anaesthesia, and no peripheral nerve block was performed. ResultsThe treatment of this clinical condition represents a challenge for orthopaedic surgeons. Most patients (86.7%, 26 patients) experienced total recovery of the radial nerve function during the follow-up period, whereas only 4 patients achieved a partial nerve function recovery, with lingering weakness when extending the fingers. ConclusionsThe chronic outcomes arising from surgical treatment of the humeral fracture with related radial nerve injury can lead to impairment sequelae of greater clinical-functional significance, with possible medico-legal implications. Radial nerve injury constitutes one of the most common complications arising from humeral fracture. The course of the nerve and its close relationship with the humerus are likely to entail a high risk of injury with shaft fractures. A treatment algorithm should be recommended for the management of radial nerve injury associated with humeral shaft fracture.

OUTCOMES OF SHOULDER JOINT ENDOPROSTHETICS AFTER REMOVAL OF TUMORS IN THE HUMERUS

Introduction. The use of endoprostheses of the shoulder joint is possible with primary and secondary (metastatic) tumor lesions of the proximal part of the humerus. The possibility of using both individual oncological endoprostheses and modular oncological endoprostheses for tumors of the proximal part of the humerus is reported. Aim. To assess the effectiveness of restoring the function of the shoulder joint and upper limb and improving the patient's quality of life after shoulder joint arthroplasty for tumors of the proximal part of the humerus. Materials and methods. The results of the treatment of 27 patients who underwent shoulder arthroplasty in the conditions of the clinical departments of the "Institute of Traumatology and Orthopedics of the National Academy of Medical Sciences of Ukraine" for tumors of the proximal part of the humerus from 2014 to 2024 were evaluated. Endoprosthesis was performed in 22 (81.5%) patients with primary tumors of the proximal part of the humerus and in 5 (18.5%) with metastatic tumors. Endoprosthesis of the shoulder joint was performed with individual oncological endoprostheses in 24 (88.9%) patients and modular oncological endoprostheses in 3 (11.1%) patients. Arthroplasty was primary in 25 (92.6%) patients and secondary in 2 (7.4%) patients. Results. During follow-up, 3 (11.1%) patients died with an average follow-up period of 10.3±1.9 months, the other 24 (88.9%) were alive, with an average follow-up period of 88.1±8.7 months. The overall frequency of complications in our study was 6 (22.2%) cases, 3 (11.1%) patients had an infectious complication in the late postoperative period after 12, 24 and 36 months, 1 (3.7%) patient had aseptic loosening of the leg of the endoprosthesis after 36 months, in 2 (7.4%) patients after 5 and 6 months, dislocation of the head of the endoprosthesis from the joint cavity was noted. Local tumor recurrence was observed in 2 (7.4%) patients. The overall mean MSTS total limb functional outcome after shoulder arthroplasty for all 27 patients was 74.2%, and of the 24 patients who survived, the mean limb functional outcome after shoulder arthroplasty was 78.4%. The patients' quality of life (according to the EORTQ-QLQ-С30 questionnaire) increased from 32 points in the preoperative period to 78 points after shoulder joint replacement. Conclusions. Endoprosthetics is a modern method for reconstructing bone segments in the surgical treatment of tumors of long bones in the limbs. This method allows for the replacement of bone defects of any size (volume) and length. Shoulder joint endoprosthetics within the framework of combination and multimodal treatment of primary and metastatic tumors of the proximal part of the humerus provides restoration of both shoulder joint functions and the upper limb as a whole, thereby improving the quality of life for this group of patients.

Open vs. Percutaneous Achilles Tendon Repair: Experience of Single Orthopedic Institute with Long-Term Follow-Up.

Background and Objectives: There are numerous techniques for the surgical treatment of Achilles tendon lesions described in the literature, and it is possible to distinguish repair techniques as either open surgery or percutaneous repair techniques. Both approaches have advantages and disadvantages. With this retrospective study, we aim to analyze the incidence of re-ruptures and other complications, return to sport and overall quality of life at a long-term follow-up in the treatment of acute ATRs, comparing the results of percutaneous repair with those of open repair. Materials and Methods: This is a retrospective study on a consecutive series of patients with complete tear of the AT who were managed through a surgical approach by the Operative Unit of Orthopaedics and Traumatology of Sant'Anna University Hospital (Ferrara, Emilia-Romagna, Italy) between April 2014 and December 2021. Patients were treated with a percutaneous or an open technique according to the surgeon's preference without randomization. Results: We considered 155 patients who met the established inclusion criteria. Of these, 103 (66.45%) patients underwent percutaneous treatment with the Tenolig® system, and 52 (33.55%) underwent open surgery, with an average ATRS in the first group of 92.5 compared to an average ATRS value of 82 in patients treated with the open technique. Conclusions: In our experience, following overlapping rehabilitation protocols in all patients included, we observed that the Tenolig® repair system led to a better ATRS at long-term follow-up, with comparable complication rates to open surgery.

Coccygeal tumours unveiled: a retrospective cohort analysis from a tertiary referral centre.

Isolated tumours affecting the coccyx are infrequent, with only a handful of documented cases in the literature. Herein, we highlight the most extensive consecutive case series involving various isolated coccyx tumours with varied clinical presentations and imaging features. A retrospective search of our tertiary Orthopaedic oncology institute's oncology and Radiology database [Radiology Information System, Picture Archiving and Communication System, and Computerised Radiology Information System] for the keyword "Coccyx" and "Tumour" was performed over 15 years (between December 2007 and August 2022). Data collected was correlated with local histopathology and laboratory records. Patient demographics, clinical characteristics, and complementary imaging findings were recorded for analysis. One hundred and three lesions originating in the coccyx with a mean age of 62 years (range 25-90 years) were identified. There was a male preponderance with 59 male and 44 female patients (1.3:1.0). The most typical tumour noted was chordoma. Other lesions included a dermoid cyst, a myxopapillary ependymoma, a notochordal remnant, an osteochondroma, an Ewing sarcoma, and a teratoma. Our analysis suggests that most of the tumours involving coccyx are chordomas with a few rarely encountered benign and malignant tumours. Radiological imaging plays a vital role in characterising isolated tumours affecting the coccyx and guiding appropriate patient management. This is the largest reported series of coccygeal tumours. Chordoma is the commonest coccygeal tumour. Patients with unexplained coccydynia should undergo detailed investigations, preferably with cross-sectional imaging.

Digitizing operating theater data in resource-limited settings: Understanding surgical care delivery post-implementation at Tanzanian referral hospital.

Digitizing surgical data infrastructure is critical for policymakers to make informed decisions. The implementation of the first web-based operating theater (OT) recordings at Muhimbili Orthopedic Institute (MOI) represents significant advancements in data management for Tanzania. This study aims to share post-platform implementation outcomes, challenges, and insights gained offering guidance to settings facing similar data repository challenges. In July 2023, after training clinicians, the platform was deployed at MOI operating theaters (OTs) to facilitate prospective data entry following procedures, ensuring timely updates of perioperative outcomes. Semi-structured interviews were conducted with key stakeholders to gather insights into the platform's functionality and efficient data management systems. We presented data from August 2023 to February 2024 along with platform insights. Over 4449 procedures were conducted, comprising 1321 emergencies and 3128 electives, with orthopedics/trauma accounting for the majority (3606). Trauma-related emergencies (921) predominate among interventions. General anesthesia was prevalent; 60.56% in emergencies and 44.51% in electives. Orthopedics/trauma utilized 90.91% of assigned operating days in electives, while neurosurgery utilized 93.39% (p<0.011). The cancellation rate was 7.5%, primarily due to emergency interferences (32%). Of procedures, 96.76% were discharged, while 2.81% died. Challenges encountered during platform implementation included securing local support, integrating technology, and navigating administrative adjustments. Lessons learned emphasized continuous communication for stakeholder buy-in and training for platform familiarity. The web-based OT recordings at MOI succeeded with local support and showed promise for wider scalability. To ensure sustainability, ongoing follow-up, monitoring of platform functionality, local funding establishment, and strengthening global partnerships are recommended.

Extraskeletal Ewing Sarcoma of the Extremities and Trunk: A Retrospective Analysis of a Mono-Institutional Series

Introduction: Extraskeletal Ewing sarcoma (EEwS) is a rare malignant tumor, and current international recommendations indicate systemic and local treatment like bone Ewing sarcoma (BEwS); to the best of our knowledge, very few studies tried to explore the clinical and genetic characteristics of this tumor, and the most appropriate treatment strategy remains uncertain. Methods: We reviewed 35 EEwS cases enrolled at Rizzoli Orthopedic Institute in Bologna, Italy, between 1988–2022. We performed RNA sequencing in 18 Ewing sarcoma cases, including 12 BEwSs and 6 EEwSs. We analyzed overall survival (OS), local relapse-free survival (LRFS), and metastasis-free survival (MFS) and the risk factors associated to survival. Results: Unsupervised hierarchical clustering showed no differences in the transcriptional profile between EEwS and BEwS. Five-year OS was 67% (95% confidence interval [CI]: 47–80), 5-year LRFS was 61% (95% CI: 43–75), and 5-year MFS was 55% (95% CI: 38–70). Recurrent tumors, larger than 8 cm, and elevated lactate dehydrogenase (LDH) serum value resulted to be negative prognostic factors. Conclusions: The finding/detection of a genetic profile that is indistinguishable between EEwS and BEwS confirms the view that the two subgroups belong to the same tumor entity and supports the use of a single therapeutic approach for Ewing sarcoma, regardless of the site of origin. Statistical evaluation showed that size bigger than 8 cm, elevated LDH, and recurrent tumors had a worse prognosis, suggesting a risk-stratification method for identifying patients for specific therapy treatment. However, larger, multicenter, prospective trials are called for to validate our findings.

Electronic documentation burden among outpatient rehabilitation therapists: a qualitative descriptive study and quality improvement initiative.

Outpatient rehabilitation (rehab) physical, occupational, and speech therapists use electronic health records (EHR), yet their documentation experiences, including any documentation burden, are not well researched. Therapists are a growing portion of the U.S. healthcare workforce, whose need is critical to the health of an aging population. We aimed to describe outpatient rehab therapists' documentation experiences and identify strategies for mitigating any documentation burden. We used qualitative descriptive methodology to conduct 4 focus groups with outpatient rehab therapists at Hospital for Special Surgery, a multi-site orthopedic institution. Transcripts were inductively coded to identify themes and actionable strategies for improving the therapists' documentation experiences. Therapists provided feedback and prioritization of proposed strategies. A total of 13 therapists were interviewed. Five themes and 10 subthemes characterize the therapists' documentation experience by a feeling that documentation inhibits clinical care and work/life balance, a perceived lack of support and efficiencies, the desire to document to communicate clinical care, and a design vision for improving the EHR. Top prioritized strategies for improvement included use of timesaving templates, expanding dictation, decluttering the EHR interface, and support for free texting over discrete data capture. Outpatient rehab therapists experience documentation burden similar to that documented of physicians and nurses. Manual data entry imposes burden on therapists' time and clinical care. A multi-faceted approach is needed for improving therapists' experiences including EHR redesign, technology supporting dictation and narrative to discrete data capture, and support from leadership and regulators.

Complications of revision knee arthroplasty

Due to the growing scale of arthroplasty and the widening of indications for knee joint replacement, the durability of joint functioning has become a critical issue. Untimely diagnosis and inadequate treatment of patients with endoprosthesis component loosening leads to major bone defects. This problem arises from repeated joint interventions, large bone defects and duration of revision surgeries, that is fraught with catastrophic consequences for patients – revision prosthesis removal or even limb amputation. The project aims to improve the treatment for patients with instability of components after knee joint arthroplasty. The aim of the study is to analyze the results of revision knee arthroplasty and identify the causes of mistakes and complications of revision arthroplasty with the intention of prevention. Materials and methods. A retrospective analysis of 50 revision knee arthroplasties performed at the Centre for Arthroplasty of the State Institution “Institute of Traumatology and Orthopedics of the National Academy of Medical Sciences of Ukraine” was conducted. Clinical and radiological findings were evaluated for all patients. All revision prostheses used in this study were of the semi-constrained type. Cementation technique was used for all implants. In the revision of the septic complication group, a full cementation technique with antibiotics according to a sensitivity profile were used, while in the aseptic complication group, a surface cementation technique with antibiotics according to sensitivities were used. Results. The authors of the project have analyzed the results of treatment of 50 revision arthroplasty procedures performed between 2013 and 2022 for instability of the endoprosthesis components. The structure of complications has been examined and the causes of failure in revision knee arthroplasty have been identified. This study has shown promise in preventing complications and developing personalized approaches to revision arthroplasty. Conclusions. The analysis of revision knee arthroplasty failure has shown the prevalence of septic complications (56.0 %). In the case of septic complications after revision arthroplasty, Staphylococcus aureus prevailed (57.1 %), gram (-) microorganisms were causative agents in other cases. Factors resulting in aseptic complications included those associated with the surgical intervention (81.8 %), the patient (45.4 %) and the combination thereof (72.7 %). Significant causes of the femoral revision component loosening were residual valgus deformity, medial instability in the frontal plane; significant causes of the tibial component loosening were residual varus deformity and lateral instability in the frontal plane.