Are Generative Pretrained Transformer 4 Responses to Developmental Dysplasia of the Hip Clinical Scenarios Universal? An International Review.

OBJECTIVE: There is increasing interest in applying artificial intelligence chatbots like generative pretrained transformer 4 (GPT-4) in the medical field. This study aimed to explore the universality of GPT-4 responses to simulated clinical scenarios of developmental dysplasia of the hip (DDH) across diverse global settings. METHODS: Seventeen international experts with more than 15 years of experience in pediatric orthopaedics were selected for the evaluation panel. Eight simulated DDH clinical scenarios were created, covering 4 key areas: (1) initial evaluation and diagnosis, (2) initial examination and treatment, (3) nursing care and follow-up, and (4) prognosis and rehabilitation planning. Each scenario was completed independently in a new GPT-4 session. Interrater reliability was assessed using Fleiss kappa, and the quality, relevance, and applicability of GPT-4 responses were analyzed using median scores and interquartile ranges. Following scoring, experts met in ZOOM sessions to generate Regional Consensus Assessment Scores, which were intended to represent a consistent regional assessment of the use of the GPT-4 in pediatric orthopaedic care. RESULTS: GPT-4's responses to the 8 clinical DDH scenarios received performance scores ranging from 44.3% to 98.9% of the 88-point maximum. The Fleiss kappa statistic of 0.113 ( P = 0.001) indicated low agreement among experts in their ratings. When assessing the responses' quality, relevance, and applicability, the median scores were 3, with interquartile ranges of 3 to 4, 3 to 4, and 2 to 3, respectively. Significant differences were noted in the prognosis and rehabilitation domain scores ( P < 0.05 for all). Regional consensus scores were 75 for Africa, 74 for Asia, 73 for India, 80 for Europe, and 65 for North America, with the Kruskal-Wallis test highlighting significant disparities between these regions ( P = 0.034). CONCLUSIONS: This study demonstrates the promise of GPT-4 in pediatric orthopaedic care, particularly in supporting preliminary DDH assessments and guiding treatment strategies for specialist care. However, effective integration of GPT-4 into clinical practice will require adaptation to specific regional health care contexts, highlighting the importance of a nuanced approach to health technology adaptation. LEVEL OF EVIDENCE: Level IV.

An Eastern Europe and Middle East multinational expert Delphi consensus study on the prevention, diagnosis, and treatment of developmental dysplasia of the hip before walking age.

PURPOSE: The incidence of developmental dysplasia of the hip (DDH) is higher in Eastern Europeans and Middle Easterners. This study aimed to establish consensus among experts in this geographical area on the management of DDH before walking age. METHODS: Fourteen experienced orthopedic surgeons agreed to participate in a four-round online consensus panel by the Delphi method. The questionnaire included 31 statements concerning the prevention, diagnosis, and treatment of DDH before walking age. RESULTS: Consensus was established for 26 (84%) of 31 statements. Hip ultrasonography is the proper diagnostic tool under six months in DDH; universal newborn hip screening between three and six weeks is necessary; positive family history, breech presentation, female gender, and postnatal swaddling are the most important risk factors; Ortolani, Barlow tests, and limitation of abduction are the most important clinical findings; Pavlik harness is the first bracing preference; some Graf type IIa hips and all Graf type IIb and worse hips need abduction bracing treatment; the uppermost age limit for closed and open reductions is 12 months and 12-24 months, respectively; anatomic reduction is essential in closed and open reductions, postoperative MRI or CT is not always indicated; anterior approach open reduction is better than medial approach open reduction; forceful reduction and extreme positioning of the hips (> 60° hip abduction) are the two significant risk factors for osteonecrosis of the femoral head. CONCLUSION: The findings of the present study may be useful for clinicians because a practical reference, based on the opinions of the multinational expert panel, but may not be applicable to all settings is provided.

Multicenter Series of Deformity Correction Using Guided Growth in the Setting of Osteogenesis Imperfecta.

BACKGROUND: The mainstay of deformity correction and fracture prevention for patients with osteogenesis imperfecta (OI) includes osteotomies and intramedullary rodding. Guided growth, described in the setting of skeletal dysplasias, offers a less invasive means of deformity correction. We report a multicenter case series of guided growth procedures in the setting of OI. METHODS: We retrospectively reviewed patients with OI at three institutions from April 2012 to April 2019: 18 patients underwent guided growth for angular deformity correction with minimum 1-year follow-up or full deformity correction and removal of guided growth hardware. Clinical characteristics, deformity measurements, and complications were collected. Distal femoral and proximal tibial hemiepiphysiodesis was performed using figure-of-eight plates and screws, and distal tibial medial hemiepiphysiodesis with cannulated screws. Preoperative and postoperative lateral distal femoral angle, medial proximal tibial angle, and lateral distal tibial angle were measured. Frequency and descriptive statistics were completed. RESULTS: Eighteen patients with OI (five-I, four-III, six-IV, three-V) underwent 33 guided growth procedures with mean follow-up of 3.09 years; all received routine bisphosphonate treatment. Preoperative and postoperative mean joint angles were measured. The location for hemiepiphysiodesis included 8 distal femoral medial, 2 distal femoral lateral, 8 proximal tibial medial, 3 proximal tibial lateral, and 12 distal tibial medial. Twelve of the 33 procedures were in patients who had an intramedullary rod; 1 demonstrated backout of the epiphyseal and metaphyseal screws of a distal femoral medial figure-of-eight plate. It was revised to a larger plate with longer screws and removed upon completion of deformity correction. CONCLUSION: Guided growth may be used as an effective means of angular deformity correction with dysplastic OI bone. Having an intramedullary rod did not preclude the use of a guided growth technique. One procedure demonstrated screw backout. Given the short stature associated with OI, performing a guided growth procedure at an early enough age to allow time for correction should be considered. LEVEL OF EVIDENCE: Level IV-case series.

Knee orthopedic problems in newborns and infancy: a review.

PURPOSE OF REVIEW: We present the reader with insight on the most common disorders of the knee in newborns and infants. Knee issues in this population may confuse the first contact physicians due to certain peculiarities of the immature immune system, small size and underdevelopment of joint anatomy. Data presented here are recent and significant, and something to bear in mind when caring for children of this age. RECENT FINDINGS: With the advent of new diagnostic methods, a shift in the causative agent of pediatric knee infections has been noted. Minimally invasive methods such as arthrocentesis and arthroscopy are successfully employed in treatment of knee problems in newborns and infants. A trial of conservative therapy in congenital patellar instability can give good results, and obviate the need for surgery in some cases. Various syndromes that affect the knee have specific characteristics that need to be recognized early to avoid problems in the future. SUMMARY: Although rare, knee problems in infants can and do occur. Their cause varies significantly and good outcomes require a multidisciplinary approach. Early diagnosis, referral and initiation of treatment protocols can significantly influence the fate of the joint and with it the patients' functional status for life.

Personalized surgery approach in severe form of osteogenesis imperfecta type III: point of view.

Osteogenesis imperfecta (OI) is a genetic disorder characterized by fragile bones. It is our aim to illustrate variability in clinical presentation of severe form of OI. As an example of personalized surgery approach we present an 11-year-old girl with OI type III. Prior to referral to our hospital, she was treated with 18 cycles of bisphosphonates as well as with several different surgical procedures. Due to no improvement in her mobility status she underwent two additional surgeries at our hospital with a 5-month interval between them. Prior to the surgery, molecular genetic analysis was performed and the clinical diagnosis of OI was confirmed. Using the Fassier-Duval intramedullary telescoping nail, we performed correction osteotomies of both femurs and lower legs in two separate settings, with a very good final result. According to our experience, the Fassier-Duval nailing system is good option, but one should pay attention to many details while performing surgery. Thus, making treatment of OI patients very personalized. In this paper we present a unique personalized approach in OI: firstly, diagnosing COL1A1 gene mutations and secondly, performing a complex two-part surgery.

Longitudinal Epiphyseal Bracket of the First Metatarsal Bone: Three Case Reports and a Review of the Literature.

Longitudinal epiphyseal bracket (LEB) is a rare bone dysplasia of the tubular bones. Owing to an abnormal secondary ossification center, the affected bones can develop progressive shortening and angular deformity. The aim of our study was to provide an overview of the reported data regarding epidemiology and surgical procedures available for LEB of the first metatarsal bone in a pediatric population combined with a small case series. We report a retrospective case series of 3 nonsyndromic pediatric patients with different ages and with confirmed dysplasia of the first metatarsal bone. All patients presented with unilateral congenital hallux varus deformity and underwent surgical treatment. The radiographs and medical records were reviewed to evaluate the deformity characteristics, treatment, and clinical results. The mean patient age at initial surgery was 34 (range 12 to 63) months, and the median follow-up period was 46 (range 31 to 75) months. Almost all specific radiographic measurements showed correction of the deformity, and each foot demonstrated functional and cosmetic improvement. A standardized literature search was performed to obtain studies of LEB of the first metatarsal bone in the pediatric population. From on our results and the current data available, surgical treatment should be tailored to the patient's age and radiographic stage of LEB. However, monitoring until skeletal maturity of the feet is necessary to assess the final results.

Does timing of surgery influence the long-term results of foot polydactyly treatment?

BACKGROUND: There is an evident lack of research on timing of polydactyly surgery and its effects on treatment results. METHODS: Retrospective comparative study on foot polydactyly patients treated at our department from 1995 to 2009. Patients were divided into 2 groups, group A - under the age of 5 at surgery, and group B - 5 years and older. RESULTS: There were 24 patients (8 male, 16 female), 30 feet. Median age at surgery was 1 year (range, 9 months-4.5 years) for group A, and 8.5 years (range, 6-37 years) for group B. Median follow-up was 16.2 years (range, 7-21 years). There were 16 postaxial and 8 preaxial cases. At the last follow-up 12 patients' feet were "excellent" and 12 "good". No significant differences were identified between the two groups at final follow-up. CONCLUSIONS: Timing of surgery for foot polydactyly is not crucial for final results.

Correction of lower extremity angular deformities in skeletal dysplasia with hemiepiphysiodesis: a preliminary report.

BACKGROUND: Lower extremity angular deformities are common in children with skeletal dysplasia and can be treated with various surgical options. Both acute correction by osteotomy with internal fixation and gradual correction by external fixation have been used with acceptable results. Recently, the Guided Growth concept using temporary hemiepiphysiodesis for correction of angular deformities in the growing child has been proposed. This study presents the results of temporary hemiepiphysiodesis using eight-Plates and medial malleolus transphyseal screws in children with skeletal dysplasia with lower extremity angular deformities. METHODS: Twenty-nine patients (50 lower extremities) with skeletal dysplasia of different types were treated for varus or valgus deformities at 2 centers. The mean age at the time of hemiepiphysiodesis was 10±2.9 years. A total of 66 eight-Plates and 12 medial malleolus screws were used. The average follow-up time between the index surgery and the latest follow-up with the eight-Plate in was 25±13.4 months. Erect long-standing anteroposterior and lateral view radiographs were obtained for deformity planning before the procedure. Angular deformities on radiograph were evaluated by mechanical axis deviation, mechanical lateral distal femoral angle, medial proximal tibial angle, and lateral distal tibial angle. Mechanical axis deviation was also expressed as a percentage to one half of the width of the tibial plateau, and the magnitude of the deformity was classified by determining the zones through which the mechanical axis of the lower extremity passed. Four zones were determined on both the medial and lateral side of the knee and the zones were labeled 1, 2, 3, and 4, corresponding to the severity of the deformity. A positive value was assigned for valgus alignment and a negative for varus alignment. RESULTS: Patients were analyzed in valgus and varus groups. There was correction in 34 of 38 valgus legs and 7 of 12 varus legs. In the valgus group, the mean preoperative and postoperative mechanical lateral distal femoral angles were 82.1±3.7 and 91.1±4.9 degrees, respectively (P<0.001). The mean preoperative and postoperative medial proximal tibial angles were 98.5±8 and 87.8±7.1 degrees, respectively (P<0.001). Six patients with bilateral ankle valgus deformities (12 ankles) underwent single-screw medial malleolus hemiepiphysiodesis. The mean preoperative and postoperative lateral distal tibial angles were 73.9±8.7 and 86.1±6.8 degrees, respectively (P<0.001). The numbers of plates in each anatomic location were not enough to make statistical conclusions in varus legs. Four patients in the valgus group and 3 patients in the varus group did not benefit from the procedure. Mechanical axes were in zone 2 or over in 94% of the legs preoperatively, whereas postoperatively, only 23% of the legs had mechanical axes in zone 2 or over in varus and valgus groups. CONCLUSIONS: Growth modulation with an eight-Plate is a relatively simple surgery and has low risk of mechanical failure or physeal damage. It can be performed in very young patients, which is an important advantage in skeletal dysplasia. Screw purchase is reliable even in the abnormal epiphysis and metaphysis. Our results show that Guided Growth using eight-Plates in skeletal dysplasia is safe and effective. LEVEL OF EVIDENCE: Level IV.

[Characteristics of anesthesia in patients with osteogenesis imperfecta undergoing orthopedic surgical procedures]. / Osobitosti anestezije kod ortopedskih zahvata u bolesnika s osteogenesis imperfect.

The aim is to show our experience in anesthesia of patients with osteogenesis imperfecta (OI) who have undergone orthopedic surgical procedures. This is a retrospective analysis of OI patients treated at our Department from 1980 to 2012. We analyzed demographics, comorbidities, preoperative characteristics, anesthesia types, anesthetics and intraoperative and postoperative complications. In the given period, 26 OI patients were treated, using 103 surgeries, and 103 anesthesia procedures. Most procedures, a total of 68, were used in children aged 0-10 years. According to the diagnosis, OI type III was mostly encountered. The rating of the American Society of Anesthesiologist (ASA) physical status was II in most cases, a total of 99. General anesthesia was used in 89 cases, and regional anesthesia in 14. Fourteen intraoperative complications were seen, mostly difficult intubation, and six postoperative cardiovascular instability cases. With careful preparation, and knowledge of pitfalls, anesthesia in these patients should be a safe procedure.

Differential expression of proteins with heparin affinity in patients with rheumatoid and psoriatic arthritis: a preliminary study.

OBJECTIVES: Using proteomic approach in this study, we sought to identify proteins with heparin affinity associated with rheumatoid arthritis (RA), psoriatic arthritis (PsA) and non-inflammatory arthritis (NIA). METHODS: Plasma samples from adult RA, PsA and NIA patients, 20 of each, were collected. After enrichment of proteins with heparin affinity, SDS-PAGE and in-gel digestion with trypsin were performed. Peptides were concentrated, micro-purified, separated and measured by nano-scale HPLC system coupled to a mass spectrometer. Peak lists were generated from raw spectra and searched against human complete proteome set by MaxQuant software. Statistical analysis of protein relative expression levels was done in IPython interactive Python shell using NumPy and Matplotlib libraries. Individual protein impact on the whole dataset correlation was done by excluding one protein at a time and calculating the correlation coefficient of remaining data points. RESULTS: Three hundred and eighty-four different proteins were identified keeping false discovery rate to 1%, from which 163 were identified in all three conditions. The plasma proteome showed a good correlation between rheumatoid (RA) and psoriatic arthritis (PsA). Out of 10 proteins whose impact on the correlation coefficient fell outside of two standard deviations from the mean, four were up-regulated (complement factor I, complement component C8 beta, glyceraldehyde-3-phosphate dehydrogenase and inter-alpha-trypsin inhibitor heavy chain H1), and two were down-regulated (immunoglobulin heavy chain V-III region BRO, and immunoglobulin J chain), both in PsA and RA by a similar ratio when compared to NIA. The remaining four proteins (Serpin A11, complement factor H-related protein 5, cartilage acidic protein 1 and coagulation factor IX) were down-regulated in PsA and up-regulated in RA when compared to NIA. CONCLUSIONS: We found differently expressed proteins in patients with inflammatory and non-inflammatory rheumatic conditions. Out of 384 proteins with heparin affinity four proteins should be further validated as potential diagnostic biomarkers in patients with RA and PsA.

Long-term follow-up of congenital distal tibiofibular diastasis: a report of two female patients.

Congenital diastasis of the inferior tibiofibular joint is an extremely rare variant of dysplastic tibial anomaly, which is usually associated with significant shortening of the lower leg and ipsilateral foot deformity due to talus incarceration in the distal tibiofibular mortise. The purpose of this study was to present the long-term results of reconstructive treatment and the functional outcome after a follow-up of 11-16 years. The principles of extremity preservation and reconstruction with the Ilizarov frame have shown a stable ankle joint, a plantigrade foot, and fully independent outdoor ambulation in both patients at the final follow-up. We concluded that amputation should not be performed under this condition.

[Treatment of langerhans cell histiocytosis in children]. / Lijecenje histiocitoze langerhansovih stanica u djece.

Langerhans' cell histiocytosis (LCH) is a disease characterised by pathologic accumulation and proliferation of histiocytes, cells from the monocyte-macrophage system, in various tissues and organs. In this retrospective study we analyzed patients charts treated in the Department of pediatric hematology and oncology at the University Hospital Zagreb with the diagnosis of LCH. Twenty-two children were diagnosed between January 1st 1996 and December 31st 2010, and all were treated with chemotherapy. 19 patients survived (86%) and the remaining 3 (14%), all under the age of 2 with multisystem disease, died. At the time of diagnosis 12 children (55%) presented with single-system disease, the most common were bone lesions in 8 children (36%). All children were treated according to protocols LCH-I and LCH -III. Eight children had mild complications of treatment and the disease itself. Diabetes insipidus remains in 4 children.

Radical prostatectomy in a patient with osteogenesis imperfecta: a possible surgical trap.

An exceedingly rare case of a patient with osteogenesis imperfecta and prostate cancer is reported. The patient underwent radical prostatectomy, which had to be stopped due to the extremely narrow space for surgical manipulation. The clinical, diagnostic and operative peculiarities of the case are presented and the relevant literature reviewed.

[Emergencies in paediatric orthopaedics]. / Hitna stanja u djecjoj ortopediji.

Emergencies in pediatric orthopaedics surgery comprise a wide spectrum of diseases and injuries which demand fast diagnosis and appropriate treatement. If certain diagnostic and therapeutic measures are not undertaken punctual, in diseases like septic arthritis of the hip, acute haematogenous osteomyelitis, acute slipped capital femoral epiphysis, changes that can give arise to permanent consequences and disabilities will be developed. Well knowing of clinical features, using of ultrasound, diagnostic punctures and if necesarry using other investigations are essential for the fast diagnosis of acute infections of the locomotor system, and along with antibiotics, methodes of decompression are basics of the treatment.