Aims

It remains unclear which factors influence overgrowth of the tibia, resulting from the metaphyseal hole created during anterior cruciate ligament (ACL) reconstruction in skeletally immature patients. This study aimed to investigate the effects of growth stimulation by creating a metaphyseal hole in a rabbit model, based on its distance from the physis and type of interposition material.

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Reconstruction of soft tissues and preservation of the extensor mechanism integrity provide a major challenge following resection of the proximal tibia tumours. We propose a novel surgical technique for neopatellar ligament reconstruction using hamstring tendon in proximal tibia tumour cases. This study details the surgical technique, early clinical and radiological outcomes, and the potential long-term benefits of this innovative reconstructive approach following proximal tibia megaprosthesis implantation.

Aims. This study investigates the effectiveness and adequacy of the informed consent process for patients undergoing hip fracture surgery. While informed consent is a legal and ethical responsibility, factors in the trauma setting can impair patients’ understanding and retention of information. This study seeks to evaluate patients’ recall of perioperative complications and explore their perceptions of the consent process. Methods. A mixed-methods, multicentre cohort study will be conducted in the Southeast of Scotland. Adult patients with hip fractures will be recruited via consecutive sampling. An information recall questionnaire will be administered within 36 hours of admission to assess unprompted and prompted recall of complications. A subset of participants will then undergo a semi-structured qualitative interview postoperatively to explore their experiences and perceptions of the consent process. Data will be analyzed using a social constructivist grounded theory to assess their perceptions of consent. Ethical approval has been granted by the East of England Research Ethics Committee (reference 23/EE/0233). Conclusion. Findings will be disseminated through peer-reviewed publications and presentations at national and international conferences. The study results will identify challenges in the consent process, particularly in how risks are communicated and understood. The data are expected to inform the development of information aids and enhance the ability of orthopaedic surgeons to provide comprehensive, patient-centred consent. Cite this article: Bone Jt Open 2025;6(3):336–341

Aims. Nonoperative treatment for developmental dysplasia of the hip (DDH) typically involves numerous in-person clinic visits, which can place a significant burden on healthcare services and patients’ families. We therefore aimed to establish and validate a pilot hybrid-virtual clinic to evaluate the clinical outcomes with the delivery of a comprehensive nonoperative treatment protocol for infant DDH to streamline care and minimize in-person visits. Methods. This was a prospective, single-centre, quality improvement (QI) study of infants with DDH who underwent a comprehensive nonoperative treatment protocol in a unified multidisciplinary infant hip clinic from December 2022 to October 2023. Practice changes were made to our published nonoperative treatment protocol, where specific in-person follow-up visits were replaced with virtual appointments, and a dedicated institutional infant hip clinic email was created for caregiver inquiries. Results. Of all interim follow-up visits, 53% (77/144) occurred virtually; 94% (48/51) of infants successfully completed brace treatment. No failures of treatment occurred during the virtual follow-up period. In total, 8% (4/51) of infants experienced brace-related complications, including only one during the virtual phase; 10% (5/51) of infants made unplanned visits to the hip clinic, including two infants who attended for brace check and adjustments during the virtual phase. One unplanned ultrasound examination occurred during the virtual phase upon request of a caregiver, which did not alter the course of treatment. No infants required bracing for an extended time due to virtual visits. Overall, 92% (47/51) of caregivers reported awareness of the hip clinic email and 33% (17/51) used this resource. No urgent inquiries were received during the virtual phase. Conclusion. Our hybrid-virtual infant hip clinic has shown comparable outcomes to the historic norms of our in-person infant hip clinic. This model of care can improve the efficiency of standardized DDH treatment protocols while maintaining excellent clinical outcomes. Cite this article: Bone Jt Open 2025;6(3):321–327

Aims. Diagnostic wrist arthroscopy is considered the gold standard for evaluating wrist joint complaints. Although this tool is often used to diagnose and stage scapholunate ligament (SLL) lesions, reports about the possible findings and their clinical relevance are scarce. Therefore, this study describes the patient characteristics, arthroscopic findings, and treatment of patients who underwent diagnostic arthroscopy for suspected SLL injury. Methods. We conducted a retrospective cohort study of patients who underwent diagnostic wrist arthroscopy due to suspicion of a SLL lesion based on medical history, physical examination, and imaging. We systematically gathered arthroscopic findings and complications. Results. This study included 324 patients, predominantly male (55%), with a median age of 44 years (IQR 29 to 54) and symptom duration of ten months (IQR 5 to 24). The indication of SLL injury was arthroscopically confirmed in 253 patients (78%). Isolated SLL injuries were found in 92 patients (28%) (Geissler I/II: 32%; III: 37%; IV: 32%). SLL lesions and SLL-associated cartilage damage were discovered in 31 patients (10%). Additional findings were found in 181 patients (56%), such as triangular fibrocartilage complex lesions (36%), lunotriquetral ligament lesions (7%), and radioscaphocapitate ligament lesions (11%). No pathology was found in 20 patients (6%). In 27 patients (8%), complications occurred due to wrist arthroscopy. The most common follow-up surgeries were 3LT (40%), salvage procedures (9%), and ulnar shortening osteotomy (6%). Conclusion. While diagnostic wrist arthroscopy commonly confirms the suspected SLL lesions and their severity, it often reveals additional pathologies (un)related to the suspected pathology. It is essential to perform the procedure thoroughly to establish all possible pathologies. Determining the appropriate treatment for these additional findings is not always straightforward and needs further investigation. Cite this article: Bone Jt Open 2025;6(3):312–320

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Periprosthetic joint infections (PJIs) pose significant challenges to patients and healthcare systems worldwide. The aim of this study was to estimate the health-economic burden of reimbursement payment in Europe for PJIs following primary hip and knee arthroplasty.

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Prevalence of artificial intelligence (AI) algorithms within the Trauma & Orthopaedics (T&O) literature has greatly increased over the last ten years. One increasingly explored aspect of AI is the automated interpretation of free-text data often prevalent in electronic medical records (known as natural language processing (NLP)). We set out to review the current evidence for applications of NLP methodology in T&O, including assessment of study design and reporting.

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Paediatric pelvic ring fractures are rare but severe injuries, presenting significant treatment challenges. This study aimed to analyze patient characteristics and explore trends in incidence, treatment methods, and mortality associated with these injuries.

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The diagnosis of periprosthetic joint infection (PJI) remains a challenge, as no single diagnostic test shows high diagnostic accuracy. Recently, the measurement of synovial biomarkers has shown promising results. The aim of this study was to present a novel multiplex micro-enzyme-linked immunosorbent assay (ELISA) method for the rapid and simultaneous measurement of alpha-defensin, interleukin (IL)-6, and calprotectin developed in a model buffer system and human spiked synovial fluid.

Aims. The risk of mortality after a hip fracture has been extensively investigated, but there is little high-quality information available dealing with the overall risk of complications. The aim of this study was to report the risk of complications in the first 120 days after a hip fracture. Methods. This was a multicentre, prospective cohort study of patients aged > 60 years with a hip fracture, involving 77 hospitals in England, Wales, and Northern Ireland, between January 2015 and 2022. The primary outcomes of interest were mortality and surgery-specific and general complications, at 120 days postoperatively. Results. A total of 24,523 patients with a hip fracture were enrolled. The 120-day risk of mortality was 12.4% (95% CI 12.0 to 12.8). The 120-day risks of surgery-specific complications were: for dislocation, 1.5% (95% CI 1.3 to 1.7); failure of fixation, 1.0% (95% CI 0.8 to 1.2); for peri-implant or periprosthetic fracture, 0.3% (95% CI 0.3 to 0.4); for reoperation for any indication, 2.7% (95% CI 2.5 to 2.9); and for surgical site infection, 3.4% (95% CI 3.2 to 3.6). The 120-day risks of general complications were: for acute kidney injury, 3.4% (95% CI 3.1 to 3.6); for the requirement of a blood transfusion, 7.0% (95% CI 6.7 to 7.3); for lower respiratory tract infection, 9.1% (95% CI 8.7 to 9.4); for urinary tract infection, 7.0% (95% CI 6.7 to 7.3); for cerebrovascular accident, 0.7% (95% CI 0.6 to 0.8); for myocardial infarction, 0.7% (95% CI 0.6 to 0.9); and for venous thromboembolism, 1.8% (95% CI 1.6 to 2.0). Conclusions. Although the risk of mortality has declined in recent years, older patients with a hip fracture remain at a high risk of surgery-specific and general complications. Cite this article: Bone Joint J 2025;107-B(3):362–367

Aims. Adult spinal deformity (ASD) surgery can reduce pain and disability. However, the actual surgical efficacy of ASD in doing so is far from desirable, with frequent complications and limited improvement in quality of life. The accurate prediction of surgical outcome is crucial to the process of clinical decision-making. Consequently, the aim of this study was to develop and validate a model for predicting an ideal surgical outcome (ISO) two years after ASD surgery. Methods. We conducted a retrospective analysis of 458 consecutive patients who had undergone spinal fusion surgery for ASD between January 2016 and June 2022. The outcome of interest was achievement of the ISO, defined as an improvement in patient-reported outcomes exceeding the minimal clinically important difference, with no postoperative complications. Three machine-learning (ML) algorithms – LASSO, RFE, and Boruta – were used to identify key variables from the collected data. The dataset was randomly split into training (60%) and test (40%) sets. Five different ML models were trained, including logistic regression, random forest, XGBoost, LightGBM, and multilayer perceptron. The primary model evaluation metric was area under the receiver operating characteristic curve (AUROC). Results. The analysis included 208 patients (mean age 64.62 years (SD 8.21); 48 male (23.1%), 160 female (76.9%)). Overall, 42.8% of patients (89/208) achieved the ideal surgical outcome. Eight features were identified as key variables affecting prognosis: depression, osteoporosis, frailty, failure of pelvic compensation, relative functional cross-sectional area of the paraspinal muscles, postoperative sacral slope, pelvic tilt match, and sagittal age-adjusted score match. The best prediction model was LightGBM, achieving the following performance metrics: AUROC 0.888 (95% CI 0.810 to 0.966); accuracy 0.843; sensitivity 0.829; specificity 0.854; positive predictive value 0.806; and negative predictive value 0.872. Conclusion. In this prognostic study, we developed a machine-learning model that accurately predicted outcome after surgery for ASD. The model is built on routinely modifiable indicators, thereby facilitating its integration into clinical practice to promote optimized decision-making. Cite this article: Bone Joint J 2025;107-B(3):337–345

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To evaluate patient-reported outcomes three months after treatment of metacarpal and phalangeal fractures or dislocations, and to identify factors that are associated with worse patient-reported outcomes.

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Osseous invasion exhibited in soft-tissue sarcoma (STS) is recognized as a prognostic risk factor. Achieving a wide margin is the default surgical approach for local control. However, for STSs where the tumour is in contact with the adjacent cortex but without clear evidence of osseous invasion, such as medullary invasion, the question of whether bone resection can provide better local control or survival than more conservative sub-periosteal excision remains controversial. The aim of this study was to assess whether bone resection for thigh STS with cortical contact of the adjacent bone results in better local control and survival compared to sub-periosteal dissection, and to investigate the prognostic factors for clinical outcomes in STS.

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Fracture-related infections (FRIs) are a major concern for patients and healthcare systems, yet their impact on mental health has been largely overlooked. This study aimed to assess the longitudinal impact of FRI on patients’ quality of life.

Aims. The conversion of previous hip fracture surgery to total hip arthroplasty (CTHA) can be surgically challenging with unpredictable outcomes; reported complication rates vary significantly. This study aimed to establish the medium-term survival and outcomes of CTHA performed following a previous hip fracture surgery. Methods. All CTHAs performed at our tertiary orthopaedic institution between January 2008 and January 2020 following previous ipsilateral hip fracture surgery were included. Patients were followed up clinically using Oxford Hip Scores (OHS), and radiologically until death or revision surgery. Postoperative complications, radiological implant failure, and indications for revision surgery were reviewed. Results. A total of 166 patients (167 hips) were included in the study, with a mean age of 71 years (42 to 99). Of these, 113 patients (67.7%) were female. CTHA followed cannulated screw fixation in 75 cases, hemiarthroplasty in 18, dynamic hip screw fixation in 47, and cephalomedullary nail in 27 cases. Patients were followed up for a mean of four years (0.1 to 9.3). During the follow-up period, 32 patients (19.2%) died. Overall, 14 patients (8.4%) suffered a complication of surgery, with intraoperative fractures (4.2%) and dislocations (3.6%) predominating. The survival probability was 96% at 9.53 years in the cemented group and 88% at 9.42 years in the uncemented group (p = 0.317). The median OHS improved from 13 (IQR 7.75 to 21.25) preoperatively to 39 (IQR 31 to 45) postoperatively in the uncemented group, and from 14 (IQR 10.5 to 22) to 38 (IQR 27 to 45) in the cemented group. Conclusion. This study highlights that CTHA from hip fracture surgery is associated with higher complication rates than conventional THA, but good medium-term results can be achieved. Their classification within the NJR requires review, acknowledging the increased potential for complications. Cite this article: Bone Jt Open 2025;6(2):195–205

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Revision hip arthroplasty for femoral stem loosening remains challenging due to significant bone loss and deformities requiring specialized revision stems. The aim of this study was to evaluate the clinical and radiological outcomes, and survival, of a consecutive series of femoral revisions performed using a primary cementless stem with tapered geometry and rectangular cross-section at medium-term follow-up.

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Valgus subsidence of uncemented tibial components following medial unicompartmental knee arthroplasty (UKA) poses a challenge in the early postoperative phase, necessitating a comprehensive understanding of its prevalence, risk factors, and impact on patient outcomes.

Aims. Unicompartmental knee arthroplasty (UKA) is associated with an accelerated recovery, improved functional outcomes, and retention of anatomical knee kinematics when compared to manual total knee arthroplasty (mTKA). UKA is not universally employed by all surgeons as there is a higher revision risk when compared to mTKA. Robotic arm-assisted (ra) UKA enables the surgeon to position the prosthesis more accurately when compared to manual UKA, and is associated with improved functional outcomes and a lower early revision risk. Non-randomized data suggests that, when compared to mTKA, raUKA has a clinically meaningful greater functional benefit. This protocol describes a randomized controlled trial that aims to evaluate the clinical and cost-effectiveness of raUKA compared to mTKA for individuals with isolated medial compartment osteoarthritis (OA). Methods. The total versus robotic-assisted unicompartmental knee arthroplasty (TRAKER) trial is a patient- and assessor-blinded, pragmatic parallel two-arm randomized superiority trial of adults undergoing elective primary knee arthroplasty for primary medial compartment OA at a single NHS hospital (ClinicalTrials.gov NCT05290818). Participants will be randomly allocated on a 1:2 basis to either raUKA or mTKA, respectively. The primary analysis will compare the Oxford Knee Score (OKS) six months after surgery. Secondary outcomes measured at three, six, and 12 months include the OKS, Forgotten Joint Score, patient expectations, EuroQol five-dimension questionnaire (EQ-5D), and EQ-visual analogue scale (EQ-VAS), patient satisfaction, range of motion, postoperative complications, need for further surgery, resource use, and financial costs. Cost-effectiveness will be measured over a ten-year time span. A total of 159 patients will be randomized (n = 53 raUKA vs n = 106 mTKA) to obtain 80% power to detect a five-point difference in OKS between the groups six months after surgery. Conclusion. The trial findings will provide evidence about the clinical and cost-effectiveness of raUKA compared to mTKA in patients with isolated medial compartment OA. This will inform future National Institute for Health and Care Excellence guidelines on primary knee arthroplasty in the UK. Cite this article: Bone Jt Open 2025;6(2):164–177

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In our previous research, we have found that melatonin (MEL) affects the osteoporotic process. By balancing bone remoulding, autophagy is involved in age-related bone loss. However, as a regulator of autophagy, whether MEL influences senile osteoporosis via regulating autophagy remains unclear.