Search Results (51)

Introduction: The scapholunate interosseus ligament (SLIL) is critical for wrist stability, with injuries causing carpal instability and potential scapholunate advanced collapse (SLAC). This technical note presents a novel ligament-sparing surgical technique for treating SLIL tears ranging from grade 2 to 4 of the Garcia-Elias classification. Materials and Methods: A retrospective study was performed on ten patients treated with this novel technique. The technique involves a dorsal approach to the wrist through a 5–7 cm incision ulnar to Lister’s tubercle. After exposing the scapholunate joint, reduction is performed using Kirschner wires (K-wires) as joysticks, followed by stabilisation with three K-wires through the scapholunate, scapho-capitate, and radio-lunate joints. Two 2.3 mm suture anchors with double sutures are placed where the reduction K-wires were removed. One pair of sutures connects the anchors and any remaining SLIL tissue, while the second pair create a shoelace-like capsulodesis. Post-operative care includes staged K-wire removal at one and two months, with progressive rehabilitation before returning to weight-bearing activities at six months. Results: All patients improved in pain and function. The technique addresses SLIL injuries by restoring both coronal alignment through ligament repair and sagittal alignment via dorsal capsulodesis. The use of suture anchors and direct repair preserves the native tissue while reinforcing the dorsal capsule–scapholunate septum complex, avoiding the need for tendon grafts or extensive bone tunnelling. Conclusions: This ligament-sparing technique offers several advantages, including absence of donor site morbidity, minimal damage to carpal cartilage and vascularity, and preservation of surgical options should revision be necessary. The procedure effectively addresses both components of scapholunate instability while maintaining a relatively straightforward surgical approach. Full article

Background: Ferrous metals are used extensively in the manufacturing of plates, pins, Kirschner wires (K-wires), and screws, and in the performance of partial and total joint replacement surgeries for the shoulder, elbow, and wrist joints. The primary surgical procedures commonly performed are hip and knee replacement surgeries. Metals possess a combination of high modulus, yield point, and ductility, rendering them well suited for load-bearing applications, as they can withstand significant loads without experiencing substantial deformations or permanent alterations in their dimensions. Application of metals and alloys is of prime importance in orthopedics as they lead the way to overcoming many issues encountered in implant use. In some instances, pure metals are used, but alloys consisting of two or more elements typically exhibit greater material characteristics, including corrosion resistance as well as toughness. The first item to address when selecting a metallic implant material is its biocompatibility. In this regard, three classes of materials are also commonly known as biomedical metals—316L stainless steel, pure titanium, and titanium alloys. Objective: The aim of this work is to create a model describing the material behavior and then simulate the metals under a load of 2300 N, which is equivalent to plastic loading. Methods: Under ten different case studies, a sub-routine was developed to combine the material characteristics of titanium and 316L stainless steel with the software. Results: The outcomes of the research were then investigated. A femur model was created using ANSYS software, and two materials, stainless steel and titanium, were used. The model was then exposed to a force of 2300 N. Full article

Distal radius fractures (DRFs) constitute one of the most prevalent injuries in adults. This study compares the clinical and radiological outcomes of intra- and extra-articular DRFs treated with percutaneous Kirschner wires (PKW) or volar locking plates (VLP). Materials and Methods: A retrospective analysis was conducted on 42 patients (aged 18 to 85) treated between 2017 and 2019 with a minimum follow-up of five years. Outcomes were assessed using radiographic parameters and validated clinical scoring systems such as Disabilities of the Arm, Shoulder, and Hand (DASH), Patient-Rated Wrist Evaluation (PRWE), and Mayo Wrist Score (MAYO). Results: Clinical outcomes were better in the VLP group but not statistically significant (p > 0.05). For extra-articular fractures, DASH were 1.5 (VLP) vs. 6.4 (PKW) (p = 0.5007), PRWE were 1.3 (VLP) vs. 2.9 (PKW) (p = 0.4049), and MAYO were 95 (VLP) vs. 86.1 (PKW) (p = 0.2406). For intra-articular fractures, DASH were 6.6 (VLP) vs. 19.7 (PKW) (p = 0.0981), PRWE 12.9 (VLP) vs. 21.1 (PKW) (p = 0.3661), and MAYO 78.9 (VLP) vs. 72.2 (PKW) (p = 0.4503). Conclusions: PKW and VLP showed satisfactory long-term outcomes. VLP fixation allowed better short-term recovery and anatomical restoration, but long-term functional outcomes were comparable. Full article

Despite advancements in surgical techniques, including the utilization of intra-operative fluoroscopy and custom surgical guides, intra-articular implant placement during the pinning of capital physeal fractures can occur and may result in catastrophic complications. Our objective in this study was to compare the epiphyseal purchase afforded by a linear and triangular pattern of Kirschner wires for stabilizing femoral capital physeal fractures. Archived pelvic limb computed tomography scans of 16 skeletally immature dogs were obtained, from which virtual femoral models were created. Separate linear and triangular arrangements of three virtual 1.6 mm Kirschner wires were centered on the thickest region of the proximal epiphysis. The length of each Kirschner wire implanted within the proximal femoral epiphysis was measured. Kirschner wire placement in triangular and linear patterns resulted in a mean epiphyseal purchase for each wire of 8.4 mm and 8.0 mm, respectively. The cumulative Kirschner wire purchase was greater with the triangular pattern (p = 0.004). The mean difference in the cumulative wire purchase was 1.3 mm. The use of a triangular Kirschner wire pattern resulted in greater implant purchase within the epiphysis compared to the linear pattern. The triangular Kirschner wire pattern may reduce the risk of intra-articular implant placement by more closely centering the wires within the thickest region of the epiphysis. Full article

Supracondylar humeral fractures are the most common type of elbow fractures in children. The treatment methods vary depending on the type of fracture (Gartland classification), which can be conservative or surgical. There is no clear consensus or guidelines to dictate the treatment of complicated supracondylar humeral fractures (Gartland types II and III). Gartland type II and III fractures are most frequently treated with closed reduction and percutaneous Kirchner-wire pinning or open reduction with K-wire pinning, depending on the degree of displacement and the orthopedic surgeon’s preference. Most studies recommend avoiding open reduction because of prolonged hospitalization and higher rates of complications. Orthopedic surgeons have different opinions regarding the Kirschner pin placement technique. Studies suggest that only lateral pinning is safe and effective, but medial and lateral pinning is proven to give more stability; there is always a risk of iatrogenic ulnar nerve damage during surgery. Modern treatment of supracondylar humeral fracture in children should focus on minimally invasive techniques and avoid open reduction, when possible, to ensure the best outcome for the patients. This scoping review’s purpose is to gather the available information on the topic in one place and to underline the lack of clear protocols. Full article

Background: Technological advancements have made three-dimensional printing prevalent in orthopedic surgery. It facilitates the production of customized implants and tailored patient instruments, enhancing surgical planning and results. This review focuses on the uses and effectiveness of patient-specific products manufactured using three-dimensional printing in ankle surgery. Methods: A search of databases—PubMed, Embase, Cochrane Library, and Google Scholar—yielded 41 articles for review. Results: Total talus replacement offers a viable alternative to standard treatments like arthrodesis and total ankle arthroplasty. Custom implants and patient-specific instrumentation in total ankle arthroplasty procedures guarantee a tailored fit and accurate alignment. For arthrodesis, three-dimensional printing enables the production of cages, effectively solving issues associated with conventional bone grafts, such as poor bone quality, significant defects, and nonunion. Additionally, patient-specific instrumentation facilitates the swift and accurate placement of Kirschner wires at the correct sites. When performing supramalleolar osteotomy, patient-specific instrumentation leads to shorter operation times, reduced blood loss, and less radiation exposure. Conclusions: Three-dimensional printing is increasingly employed in ankle surgeries, and as technology advances, it is anticipated to become critical for addressing complex ankle issues. Full article

Objective: This study aims to evaluate and compare the biomechanical performance of two Kirschner (K) wire configurations—the intra-focal and interfragmentary techniques—for the fixation of dorsally displaced distal radius fractures. The study also assesses the impact of K-wire diameter (1.6 mm vs. 2.0 mm) on mechanical stability. Methods: Sixty fresh turkey tarsometatarsus bones were selected and divided into four groups based on the K-wire configuration and diameter used. Fractures were created at standardized locations, and each bone was stabilized using either the intra-focal also known as modified Kapandji (Ka) or interfragmentary technique. Mechanical testing, including axial compression and flexion tests, was performed to assess the biomechanical stability of each configuration. Results: The interfragmentary configuration consistently demonstrated superior biomechanical performance compared to the intra-focal technique. Specifically, the use of 2.0 mm K-wires resulted in significantly higher axial stiffness (13.28 MPa) and load at break (3070 N) compared to the 1.5 mm wires. Confidence intervals further supported the robustness of these findings. The interfragmentary technique, especially with thicker K-wires, provided greater load-bearing capacity and stiffness. Conclusion: The interfragmentary technique with 2.0 mm K-wires offers superior mechanical stability compared to the intra-focal technique, making it the preferred choice for stabilizing comminuted extra-articular distal radius fractures. These findings suggest that adopting this technique may reduce the risk of postoperative complications such as fracture displacement or malunion. Further research involving osteoporotic bone models and clinical trials is recommended to validate these findings in real-world settings. Full article

Background/Objectives: Most metacarpal fractures are isolated, simple, closed, and stable fractures and located distally. They are often caused by accidental falls, strikes by humans, by objects or traffic accidents. The majority can be treated conservatively. When unstable, angulated, malrotated or shortened, a surgical fixation of these frequent fractures is needed. To treat simple, spiral, distal or shaft fractures, intramedullary Kirschner wiring (KW) or intramedullary compression screws (ISs) are used. We wanted to compare the outcomes of those two treatments. Methods: In a retrospective study we analyzed the prospectively collected data of our hospital on the indication factors and outcome factors of selected patients with simple or spiral, distal or shaft metacarpal fractures of the second to fifth finger. Indication factors were sex, age, profession, hand dominance, comorbidities, metacarpal finger number, total active range of motion (TAM), rotation, soft tissue damage, localization, articular involvement, fracture type, dislocation and axial shortening. Outcome factors were TAM, rotation, splint time, return to work, bone healing and complications. Results: Out of 750 patients, 59 fractures could be included in this study, containing 34 in the KW Group and 25 in the IS Group. Only fracture localization and fracture type were significantly different in the two groups, with more shaft and spiral fractures in the IS Group. The primary outcome of TAM and rotation as well as the secondary outcome of splint time, return to work, bone healing and complication rates showed no significant difference. Only a difference in mean follow-up time was seen. Conclusions: Intramedullary screw fixation seems a valid alternative to KW fixation for certain fracture types regarding active range of motion and rotation after treatment, splint time, bone healing and return to work time. Only the tendency of an earlier return to work and a higher rate of full TAM after treatment was seen in favor of intramedullary screws. Full article

Introduction: Despite the rising global awareness and improvement of socioeconomic and living standards, the prevalence of diabetic osteomyelitis (DOM) and its complications has been increasing rapidly. This study aims to investigate the long-term prognosis of DOM of the foot treated using antibiotic-impregnated cement spacer (ACS) and the contributing risk factors for reoperation. Methods and Materials: We retrospectively reviewed the data of 55 diabetic patients with Meggitt-Wagner Grade IIB wounds diagnosed with osteomyelitis of the foot, treated in our institution with excessive debridement, excision of the infected tissue, and implantation of antibiotic-impregnated cement spacer fixed with a Kirschner wire. Descriptive statistics, including patient demographics, were analyzed. Statistical analysis was performed using point-biserial correlation and a Chi-square test with Cramer’s V effect-size estimation to determine the relationship between reoperation and various parameters. Results: 55 patients (36 (65.45%) males and 19 (34.55%) females) with a median age of 64 (39–84) years were thoroughly analyzed throughout a median follow-up of 884 days (2–4671 days). Of the entire cohort, 29 (52.72%) patients achieved primary successful infection eradication without any further intervention, and 8 (14.54%) patients were successfully treated using a secondary procedure. More than half of the reoperated patients underwent the secondary intervention within less than a month after the primary ACS. When assessing correlation, age (r = 0.28, p = 0.04), gender (r = 0.31, p = 0.02), Staphylococcus aureus (r = −0.10, p = 0.04), and the use of gentamicin-only antibiotic cement spacer (r = 0.34, p = 0.01) demonstrated statistically significant correlation to reoperation. 89.18% of the patients who achieved infection eradication did not undergo cement removal. Conclusions: ACS has shown excellent results in eradicating bone infection with up to 7.23 years of follow-up, acting as a structural stabilizer, preventing soft tissue contractures, and delivering highly concentrated local antibiotic treatment both to soft tissue and bone. Regardless, specific factors should be thoroughly evaluated prior to surgery, as advancing age, gender, and the use of gentamicin-only antibiotics appear to be positively associated with a higher likelihood of reoperation. Conversely, infections caused by cultured Staphylococcus aureus seem to be inversely related to reoperation. Full article

Pediatric elbow fractures are quite common, accounting for up to 34% of bone fractures in children. Among these, acute lateral humeral condyle (LHC) fractures represent up to 22%. The accurate diagnosis and early treatment of LHC fractures are crucial due to the potential for abnormal growth and significant long-term impacts on joint motion. With the aim of enhancing the understanding of pediatric LHC fracture management among pediatric healthcare practitioners, we present a literature review combined with our technical recommendations based on our experience. Imaging through AP, lateral, and internal oblique X-rays remains the gold standard for diagnosis, although there is increasing focus on non-irradiating techniques, considering the skeletally immature nature of the patients. Several classification systems aid in fracture assessment, each varying in their simplicity, reproducibility, and inter- and intra-observer correlations. The treatment approaches for LHC fractures include conservative management with immobilization for minimally displaced fractures and surgical intervention for displaced fractures. The surgical options encompass closed and open reductions, using Kirschner wires or cannulated screws for fixation. While both methods show favorable outcomes, recent years have seen a growing interest in expanding the traditional indications for closed approaches. After a period of post-surgical immobilization of the limb, rehabilitation care is recommended to assist in the recovery of the range of motion. During the postoperative period, the most frequent complications are bony overgrowth, malunion, and infection, although with highly variable rates, which typically do not result in functional impairment if managed properly. Regular follow-up and monitoring are essential for optimal recovery and minimizing long-term complications. Full article

Prosthetic joint infections (PJIs) are a serious complication of orthopedic surgery. Bacteriophage (phage) therapy shows promise as an adjunctive treatment but requires further study, particularly in its pharmacokinetics. Consequently, we performed a pharmacokinetic assessment of phage therapy for PJIs using a Staphylococcus epidermidis Kirschner wire-based prosthesis rat model. We used 52 male Sprague–Dawley rats in four groups: negative controls (no phage, sterile implant), PJI controls (bacteria, no phage), sterile phage (phages given, sterile implant), and PJI (bacteria, phages given). The PJI groups were inoculated with ~10⁶ CFU of S. epidermidis. The groups receiving phage were intra-articularly injected with ~10⁸ PFU of vB_SepM_Alex five days post-implantation. The rats were euthanized between 30 min and 48 h post-injection. The measured phage concentrations between the PJI rats and the sterile controls in periarticular tissues were not significantly different. In a noncompartmental pharmacokinetic analysis, the estimated phage half-lives were under 6 h (combined: 3.73 [IQR, 1.45, 10.07]). The maximum phage concentrations were reached within 2 h after administration (combined: 0.75 [0.50, 1.75]). The estimated phage mean residence time was approximately three hours (combined: 3.04 [1.44, 4.19]). Our study provides a preliminary set of pharmacokinetic parameters that can inform future phage dosing studies and animal models of phage therapy for PJIs. Full article

Background/Objectives: The treatment of periarticular distal radius fractures remains challenging. Different surgical treatment options have been proposed as alternatives to conservative treatment. This systematic review aims to compare the functional outcomes, radiological outcomes, and complications among volar locking plates (VLPs), Kirschner-wire fixations, and external fixations (EFs) for distal radius fractures in patients aged 60 years and older. Methods: We conducted a comprehensive search of PubMed, Cochrane, and Science Direct databases assessing the effects of VLP, EF, and K-wire treatments for distal radius fractures in patients aged 60 years and over. The primary outcome was the evaluation of the range of motion (ROM) degrees after three surgical procedures, trying to assess the best treatment option. The secondary outcome included evaluation of the Disabilities of the Arm, Shoulder, and Hand (DASH) score, quick-DASH score, Patient-Rated Wrist Evaluation (PRWE) score, Visual Analog Scale (VAS) score, grip strength, radiographic assessment, and complications comparing VLPs, EFs and K-wires. Results: A total of 23 studies were included, comparing VLP, EF, and K-wire fixation. The overall population comprised 5618 patients, with 4690 females and 1015 males, of which 4468 patients were treated with VLP, 503 with EF, and 647 with K-wire. The most common complications among the VLP group were complex regional pain syndrome (7.5%) and carpal tunnel syndrome (6.8%); for the EF group, infections (9.8%) and carpal tunnel syndrome (6.8%); and for the K-wire group, carpal tunnel syndrome (7.5%) and infections (6.9%). Conclusions: VLP showed better clinical outcomes in the first few months after treatment. However, these differences decreased over time and became similar after one year. EF and K-wire fixations remain easier to manage during surgery. Full article

(1) Background: Our team has previously introduced the Single-Step Pedicle Screw System (SSPSS), which eliminates the need for K-wires, as a safe and effective method for percutaneous minimally invasive spine (MIS) pedicle screw placement. Despite this, there are ongoing concerns about the reliability and accuracy of screw placement in MIS procedures without traditional tools like K-wires and Jamshidi needles. To address these concerns, we evaluated the accuracy of the SSPSS workflow by comparing the planned intraoperative screw trajectories with the final screw positions. Traditionally, screw placement accuracy has been assessed by grading the final screw position using postoperative CT scans. (2) Methods: We conducted a retrospective review of patients who underwent lumbar interbody fusion, using intraoperative 3D navigation for screw placement. The planned screw trajectories were saved in the navigation system during each procedure, and postoperative CT scans were used to evaluate the implanted screws. Accuracy was assessed by comparing the Gertzbein and Robbins classification scores of the planned trajectories and the final screw positions. Accuracy was defined as a final screw position matching the classification of the planned trajectory. (3) Results: Out of 206 screws, 196 (95%) were accurately placed, with no recorded complications. (4) Conclusions: The SSPSS workflow, even without K-wires and other traditional instruments, facilitates accurate and reliable pedicle screw placement. Full article

This study evaluates the impact of Kirschner wire (K-wire) insertion direction on the biomechanical properties of combined tibial plateau leveling osteotomy (TPLO) and tibial tuberosity transposition (TTT) procedures in small-breed dogs with cranial cruciate ligament rupture and medial patella luxation. Twenty-one cadaveric tibiae were divided into two groups; the specimens were divided into two groups; one underwent TPLO-TTT with a proximal pin placement (Group TTP), and the other received TPLO-TTT with a distal pin placement (Group TTD). For both pin placements, two additional subgroups were formed: one with a 0.56 mm tension band (Groups TTP0.56 and TTD0.56) and the other with a 0.76 mm tension band (Groups TTP0.76 and TTD0.76). The tensile force was applied, and failure load and mode were recorded. The distal pin direction in Group TTD0.56 exhibited a significantly higher mean failure load (380.1 N) compared to the proximal pin direction in Group TTP0.56 (302.2 N, p = 0.028). No significant differences were observed among the other groups. This study concludes that distal pin placement can provide similar or improved mechanical stability in cases with limited space for proximal pin placement during combined TPLO and TTT procedures. Full article

Using orthopedic devices or prosthetic joints to treat various conditions is expected in a Traumatology and Orthopedics Unit. Recently, the materials used to build these different devices have evolved; however, pathogens can still infect these materials. Additionally, the immune system has limitations when defending against these pathogens, which results in bacterial infections like Staphylococcus aureus, Methicillin-susceptible Staphylococcus aureus (MSSA) and Methicillin-resistant Staphylococcus aureus (MRSA). A total of 276 patients who attended the Traumatology and Orthopedics Unit of our hospital from 1 June 2018 to 1 June 2019, were included in the present study. Our study analyzed the incidence of S. aureus and other bacterial pathogens in the surgical sites of patients with orthopedic implants, as well as the most used types of implants and implant materials. The specimens obtained from the surgical sites of the patients were cultured in anaerobic and aerobic media for subsequent identification using their phenotypic characteristics. Subsequently, antibiotic susceptibility tests were performed to establish the appropriate treatment. The primary pathogens identified were Staphylococcus aureus (26.4%), followed by Escherichia coli (21.0%) and Staphylococcus epidermidis (15.8%). The most commonly used implants were plates (41.7%), followed by endomedullary nails (20%), Kirschner wires (14.1%), and fixators (10.1%). As for the anatomical regions of the implants, the most frequent sites were the legs, followed by the thighs, wrists, and ankles. The pathogens were more susceptible to ciprofloxacin (95%), clindamycin (89%), and cefotaxime (86%). S. aureus is the primary infectious agent in our hospital, with an incidence of 26.4% after the placement of orthopedic implants. Although its incidence was lower compared to other tertiary hospitals, it is necessary to improve aseptic techniques in such a way as to reduce the incidence of this pathogen further. Full article