Outcomes of spring-locking plate fixation method using locking mesh plate/box plate for posterior wall fractures of the acetabulum: a retrospective single-centre study.

INTRODUCTION: This retrospective study evaluated the outcomes of variable-angle locking compression plate, mesh plate, or footplate box fixation for posterior acetabular wall fractures. PATIENTS AND METHODS: The study included nine patients with unstable posterior acetabular wall fractures who underwent internal fixation with the "spring-locking plate fixation method" between January 2015 and December 2019. Patient demographics, fracture classifications, surgical details, radiological and clinical evaluations, and complications were collected from electronic medical records. Statistical analyses were performed to assess the relationship between preoperative and postoperative dislocations. RESULTS: The mean age of the patients was 46 years, and the majority were men (88.9%). Fracture types included posterior wall fractures and posterior column plus posterior wall fractures. The mean operative time was 246 min and the mean blood loss was 663 mL. The surgical approaches included the Kocher-Langenbeck, Ganz trochanteric flip, and transtrochanteric approaches. Variable-angle locking compression plate mesh plates and footplate box type implants were used for fixation. The mean preoperative dislocation was 23 mm, which was significantly reduced to 1 mm immediately post-operation and at the final observation. The bone fusion rate was 100% and radiological and clinical evaluations revealed favourable outcomes. Complications were minimal, with mild heterotopic ossification observed in four patients. CONCLUSION: The spring-locking plate fixation method demonstrated satisfactory outcomes for the treatment of posterior acetabular wall fractures. This technique provides rigid fixation. Furthermore, the use of variable-angle locking screws minimizes the risk of intra-articular perforations. Despite limitations such as a small sample size and the absence of a control group, the results suggest that the spring-locking plate fixation method may be valuable in managing these fractures.

Clinical Study of 14 Cases of Bone Augmentation with Selective Laser Melting Titanium Mesh Plates.

Additive manufacturing techniques are being used in the medical field. Orthopedic hip prostheses and denture bases are designed and fabricated based on the patient's computer-aided design (CAD) data. We attempted to incorporate this technique into dental implant bone augmentation. Surgical simulation was performed using patient data. Fourteen patients underwent bone augmentation using a selective laser melting (SLM) titanium mesh plate. The results showed no evidence of infection in any of the 14 patients. In 12 patients, only one fixation screw was used, and good results were obtained. The SLM titanium mesh plate was good adaptation in all cases, with bone occupancy greater than 90%. The average bone resorption of the marginal alveolar bone from the time of dental implant placement to the time of the superstructure placement was 0.69 ± 0.25 mm. Implant superstructures were placed in all cases, and bone augmentation with SLM titanium mesh plates was considered a useful technique.

Sternal closure with sandwiched three-piece bioresorbable mesh reduces postoperative hemorrhage: a retrospective study.

BACKGROUND: Median sternotomy is the most performed procedure in cardiac surgery; however, sternal displacement and bleeding remains a problem. This study aimed to investigate whether sternal reconstruction using a sandwiched three-piece bioresorbable mesh plate can prevent postoperative sternal displacement and bleeding more than a bioresorbable pin. METHODS: Patients (n = 218) who underwent median sternotomy were classified according to whether a sandwiched three-piece bioresorbable mesh plate and wire cerclage (group M, n = 109) or a bioresorbable pin and wire cerclage (group P, n = 109) were used during sternal reconstruction. The causes of postoperative sternal displacement and bleeding with computed tomography data were analyzed and compared between the groups. RESULTS: The preoperative patient characteristics did not significantly differ between the groups. However, the evaluation of sternal and substernal hematoma on postoperative day 5 using computed tomography showed sternal displacement in 4 (4%) and 22 (20%) patients, and substernal hematoma in 17 (16%) and 41 (38%) patients in groups M and P, respectively; this difference was significant. Furthermore, the amount of bleeding at 6 h postoperatively was lower in group M than in group P (235 ± 147 vs. 284 ± 175 mL, p = 0.0275). Chest reopening, intubation time, and length of intensive care unit and hospital stays did not differ between the groups. The evaluation of substernal hematoma based on computed tomography yielded a significantly lower for group M than for group P, revealing that the mesh plate was an independent predictor of substernal hematoma prevention. CONCLUSION: Sternal fixation with a three-piece bioresorbable mesh plate could prevent postoperative sternal displacement, bleeding, and substernal hematoma more than sternal fixation with a pin.

Adjunct neutralization plating in patella fracture fixation: a technical trick.

Patella fracture outcomes are positive overall; however, in some cases, traditional fixation methods result in complications, including loss of fixation and irritable hardware requiring removal. We present a technique of plate fixation that we believe has the potential to improve stability and is less offensive in more comminuted fracture patterns. Improved stability should allow unfettered advancement of rehabilitation without concern for loss of fixation. Lower profile fixation offers a potential for diminishing the presence of irritating hardware requiring removal. We present our technique for using plate fixation to augment more complex patella fracture patterns.

Uso de placa malla en el manejo de fracturas conminutas de patela: reporte de caso / Use of mesh plate for the treatment of comminuted patellar fractures: case report

OBJETIVOS Describir la técnica quirúrgica para el uso de placa malla en un caso de fractura conminuta de patela y sus resultados en el seguimiento a mediano plazo. MATERIALES Y MÉTODOS Presentamos un caso de fractura conminuta de patela manejada con el uso de una placa malla y un tornillo canulado asociado, evitando de esta forma la patelectomía parcial y sus posibles complicaciones. RESULTADOS El paciente presentó una evolución satisfactoria, con rango de movimiento de rodilla completo y en condiciones de alta laboral a los cuatro meses desde la cirugía, sin complicaciones ni reintervenciones. DISCUSIÓN El uso de placas malla permite el manejo de fracturas conminutas de patela preservando stock óseo y restaurando la indemnidad del aparato extensor, con una osteosíntesis estable y poco prominente. Casos en que antiguamente la única alternativa era la patelectomía parcial y reinserción del tendón patelar ahora tienen etas placas como opción de manejo. CONCLUSIÓN El uso de placas malla en fracturas conminutas de patela es una alternativa atractiva por la estabilidad que brindan, la capacidad de reservar stock óseo, y la baja tasa de reintervenciones

OBJETIVE To describe the surgical technique for the use of a mesh plate in a case of comminuted patellar fracture and the mid-term follow up outcomes. MATERIALS AND METHODS We present a case of comminuted patella fracture managed with the use of a mesh plate and an associated cannulated screw, thus avoiding partial patellectomy and its possible complications. RESULTS Four months postoperatively, the patient presented full knee range of motion and could be discharged to return to work, with no complications or reinterventions. DISCUSSION The use of mesh plates enables the management of comminuted patellar fractures preserving bone stock and restoring the extensor mechanism with a stable and little prominent osteosynthesis. Cases which previously would only have been treated by partial patellectomy and patellar tendon reinsertion can be treated with these plates. CONCLUSION The use of mesh plates for comminuted patellar fractures is an attractive option due to their stability, their ability to preserve bone stock, and the low rates of reintervention.

Surgical fixation of ulnar coronoid process fractures via mesh plate: A case report.

Introduction: The coronoid process of the ulna is the primary stabilizer of the elbow joint. There has not yet been an accurate off-the-shelf dedicated implant because fragments of coronoid process fractures are often small and diverse. The variable angle locking compression mesh plate 2.4/2.7 (Depuy Synthes, West Chester, PA, USA) acts as a versatile, low-profile implant that can be cut to suit the specific fracture pattern and fits anatomically. Case presentations: We report two cases of Regan-Morrey type II ulnar coronoid process fractures in terrible triad elbow injuries. In both cases, persistent instability was fluoroscopically diagnosed after repair of the lateral structures. We performed osteosynthesis for the ulnar coronoid process fractures using a mesh plate, which we cut into a rhombus-like shape and used as a buttress plate. Here we report the good results obtained thereof. Conclusion: Considering our positive experience with using mesh plates, the mesh plate may be a good method of fixation for ulnar coronoid process fractures.

Surgical fixation by mesh plate and intraoperative safe techniques for the manubrium sterni.

Plate osteosynthesis for oblique fracture of the manubrium sterni is quite rare. We present a case of a 37-year-old man with oblique fracture of the manubrium sterni caused by a traumatic injury. He was operated on using a variable-angle locking compression plate Mesh Plate 2.4/2.7 and had a good postoperative result. We also discuss intraoperative safe techniques such as use of a cement spatula for reduction support tools and depth-limited drilling to prevent excess drilling of the opposite cortex.

Repair of unilateral combined orbital floor and medial wall fracture using two titanium mesh plates: a modified technique.

BACKGROUND: Compared to isolated orbital wall fracture, combined orbital floor and medial wall fractures are more likely to be required surgical correction due to a higher possibility of complications. However, it remains a challenge to repair concomitant orbital fracture using a one-piece implant due to the complex anatomic structures of the orbit. Aiming to reduce surgical difficulties and enhance therapeutic effects, we repaired unilateral combined orbital floor and medial wall fractures using two separated modified titanium mesh plates in this study. METHODS: A retrospective study was conducted on 21 consecutive patients who presented with unilateral combined orbital floor and medial wall fractures in Tianjin Medical University General Hospital between November 2010 and January 2016. The orbital fractures were repaired with two separated titanium mesh plates. The corner at the transition zone area between the orbital floor and the medial wall was reconstructed simultaneously through a combined transcaruncular and inferior subciliary approach with lateral canthotomy. The pre- and post-operative functions and aesthetic results were evaluated. RESULTS: Preoperatively, all patients presented with 3.5-6.5 mm enophthalmos, five patients presented with diplopia with ocular motility limitation in injured eyes, and six patients presented with hypoglobus ranging from 1.5 to 3.5 mm. Orbital floor and medial wall fractures of all patients were successfully repaired with two separated titanium mesh plates. Postoperatively, enophthalmos was improved in all patients, which was less than 2 mm on the last follow-up day. Hypoglobus was disappeared in all six patients postoperatively. Diplopia was resolved in five patients within 3 months post operation, and was reduced in one patient. CONCLUSIONS: In cases of unilateral concomitant orbital floor and medial wall fractures, two titanium mesh plates implantation is a safe and effective procedure. It is worthwhile to take the technique into account when the key points to consider when applying this method include reconstruction of the special orbital shape and the complete return reposition of prolapsed intraorbital soft tissues were intended.

Plate fixation of acromion fracture using a mesh plate.

In several cases of treatment of acromion fractures of the scapula, plate fixation provides more rigidity to the fractured area. However, no specific plates are available for the acromion because of high interindividual variation in the shape of the acromion. We report two cases of acromion fractures operated using a mesh plate (Depuy Synthes, West Chester, PA, USA), which acts as a versatile, low-profile implant, being cut according to the specific fracture pattern and anatomical fitting. Our positive experiences with using a mesh plate may help to establish it as the operative procedure of choice in cases of acromion fracture.

Comminuted patellar fractures: The role of biplanar fixed angle plate constructs.

BACKGROUND: Comminuted patellar fractures represent a challenging clinical problem. Treatment aims to restore the integrity of the extensor mechanism and the congruity of patellofemoral joint. Controversy exists regarding the ideal fixation method. Metallic constructs aiming to convert pulling forces on the anterior aspect of the patella into compression forces across the fracture site are the standard of care. More recently, low profile plates have been described in the management of comminuted patellar fractures. The aims of this study were to (1) develop a novel unstable patellar fracture model and (2) to compare biomechanically three different constructs for fixation comminuted patellar fractures. We hypothesized that an orthogonal biplanar disposition of the screws within an anteriorly placed locking plate provides the best biomechanical properties in the management of comminuted fractures. METHODS: Six-part complex AO 34-C3 patella fractures were simulated in 18 human cadaveric knees by means of osteotomies including comminution around the distal patellar pole. The specimens were randomly assigned to 3 fixation techniques (n â€‹= â€‹6) for either anterior plating, antero-lateral plating, or tension band wiring (TBW). Biomechanical testing was performed over 5000 cycles in active extension and passive flexion, followed by ultimate destructive quasi-static testing. Interfragmentary movements were captured by means of optical motion tracking. RESULTS: Displacement between the proximal and distal medial patella fragments was lower after anterior plating compared to both antero-lateral plating (P â€‹= â€‹0.084) and TBW (P â€‹< â€‹0.001). Moreover, displacement between the proximal and distal lateral fragments was significantly lower after anterior plating compared to both other techniques (P â€‹≤ â€‹0.032). In addition, it was significantly lower for antero-lateral plating versus TBW (P â€‹< â€‹0.001). Rotation around the medio-lateral axis between the proximal and distal medial fragments was significantly lower after anterior plating compared to TBW (P â€‹= â€‹0.017). CONCLUSIONS: Anterior mesh plating with biplanar placement of locking screws provides superior stability for fixation of comminuted patellar fractures when compared to both antero-lateral mesh plating and TBW. The latter is associated with considerably inferior performance.

Contourable craniofacial mesh plate osteosynthesis of patellar fractures: A new, low-profile fixation technique.

PURPOSE: Patellar fractures are challenging orthopaedic injuries that can be difficult to treat due to the complexity of fracture patterns, the high stresses at the patellofemoral joint, and subcutaneous location of the patella. Hardware prominence and need for hardware removal are two of the most common complications after surgical fixation of patellar fractures. There is an ever present need for low profile fixation constructs that are also biomechanically stable. MATERIALS AND METHODS: We present an alternative technique of patella fixation with a low profile titanium mesh plate typically used in craniofacial skeletal trauma. Four patients at our institution underwent mesh plate fixation of patella fractures. RESULTS: All four patients had union without any post-operative complications. All four patients regained preoperative range of motion without residual pain or disability. CONCLUSIONS: Mesh plate fixation of patellar fractures is an alternative to standard tension band technique, especially in comminuted fractures. The craniofacial mesh plate is very low profile, provides stable fixation that allows for early range of motion, and has the potential to reduce post-operative complications like hardware removal.

Orbital wall restoring surgery with resorbable mesh plate.

BACKGROUND: Orbital resorbable mesh plates are adequate to use for isolated floor and medial wall fractures with an intact bony buttress, but are not recommended to use for large orbital wall fractures that need load bearing support. The author previously reported an orbital wall restoring surgery that restored the orbital floor to its prior position through the transnasal approach and maintained temporary extraorbital support with a balloon in the maxillary sinus. Extraorbital support could reduce the load applied on the orbital implants in orbital wall restoring surgery and the use of resorbable implants was considered appropriate for the author's orbital wall restoring technique. METHODS: A retrospective review was conducted of 31 patients with pure unilateral orbital floor fractures between May 2014 and May 2018. The patients underwent transnasal restoration of the orbital floor through insertion of a resorbable mesh plate and maintenance of temporary balloon support. The surgical results were evaluated by the Hertel scale and a comparison of preoperative and postoperative orbital volume ratio (OVR) values. RESULTS: The OVR decreased significantly, by an average of 6.01% (p< 0.05) and the preoperative and postoperative Hertel scale measurements decreased by an average of 0.34 mm with statistical significance (p< 0.05). No complications such as buckling or sagging of the implant occurred among the 31 patients. CONCLUSION: The use of resorbable mesh plate in orbital floor restoration surgery is an effective and safe technique that can reduce implant deformation or complications deriving from the residual permanent implant.

Orbital wall restoring surgery with resorbable mesh plate

BACKGROUND: Orbital resorbable mesh plates are adequate to use for isolated floor and medial wall fractures with an intact bony buttress, but are not recommended to use for large orbital wall fractures that need load bearing support. The author previously reported an orbital wall restoring surgery that restored the orbital floor to its prior position through the transnasal approach and maintained temporary extraorbital support with a balloon in the maxillary sinus. Extraorbital support could reduce the load applied on the orbital implants in orbital wall restoring surgery and the use of resorbable implants was considered appropriate for the author’s orbital wall restoring technique. METHODS: A retrospective review was conducted of 31 patients with pure unilateral orbital floor fractures between May 2014 and May 2018. The patients underwent transnasal restoration of the orbital floor through insertion of a resorbable mesh plate and maintenance of temporary balloon support. The surgical results were evaluated by the Hertel scale and a comparison of preoperative and postoperative orbital volume ratio (OVR) values. RESULTS: The OVR decreased significantly, by an average of 6.01% (p < 0.05) and the preoperative and postoperative Hertel scale measurements decreased by an average of 0.34 mm with statistical significance (p < 0.05). No complications such as buckling or sagging of the implant occurred among the 31 patients. CONCLUSION: The use of resorbable mesh plate in orbital floor restoration surgery is an effective and safe technique that can reduce implant deformation or complications deriving from the residual permanent implant.

An alternative technique for greater tuberosity fractures: use of the mesh plate.

INTRODUCTION: Isolated greater tuberosity (GT) fractures (AO 11-A1) tend to occur in the younger patient population and are poorly managed by most precontoured proximal humerus locking plates. The goal of this study was to identify and assess an alternative treatment strategy for greater tuberosity fractures. MATERIALS AND METHODS: A retrospective review of all cases of isolated greater tuberosity fractures treated with a 2.4/2.7 mesh plate (Synthes) between 2010 and 2015 was conducted. Patient demographics, operative reports, and clinical notes were reviewed. The time to radiographic union was assessed. Clinical outcomes were retrieved from patients at their follow-up visits or via mailed Disabilities of the Arm, Shoulder, Hand (DASH) questionnaires. RESULTS: Ten patients with isolated GT fractures treated with mesh plating were identified with an average age of 47.1 years. The average radiographic follow-up was 7.2 months and the average clinical follow-up was 8.0 months. The mean time to union was 8.5 weeks. Two patients underwent elective hardware removal. The mean DASH at final follow-up was 28.2 (±22.4), while the mean DASH work was 13.6 (±19.1). CONCLUSION: We have identified a viable alternative treatment option for the surgical management of isolated greater tuberosity fractures using a mesh plate that can be contoured to the patient's anatomy. Surgeons should be aware of this option for select patients.

Outcome of low profile mesh plate in management of comminuted displaced fracture patella.

PURPOSE: To assess the clinical results of using mesh plate in management of displaced comminuted fracture patella. PATIENTS AND METHODS: Between January 2014 and October 2015, nine patients with closed displaced comminuted fracture patella were fixed using mesh plate and 2mm mini screws. RESULTS: All fractures united after an average of 10 weeks. At final follow-up of an average 19.6 months, average postoperative Lysholm score was 89.1±4.9, and average Postoperative Böstman scale was 27.2±3.1. No hardware related complications were recorded. CONCLUSION: Low profile mesh plate is a good option in management of comminuted fracture patella with good clinical outcome. This new surgical technique may be particularly useful in comminuted fractures when patellectomy would otherwise be considered.

Endonasal management of pediatric congenital transsphenoidal encephaloceles: nuances of a modified reconstruction technique. Technical note and report of 3 cases.

OBJECTIVE Congenital transsphenoidal encephaloceles are rare malformations, and their surgical treatment remains challenging. This paper reports 3 cases of transsphenoidal encephalocele in 8- to 24-month-old infants, who presented mainly with airway obstruction, respiratory distress, and failure to thrive. METHODS The authors discuss the surgical management of these lesions via a minimally invasive endoscopic endonasal approach, as compared with the traditional transcranial and transpalatal approaches. A unique endonasal management algorithm for these lesions is outlined. The lesions were repaired with no resection of the encephalocele sac, and the cranial base defects were reconstructed with titanium mesh plates and vascular nasoseptal flaps. RESULTS Reduction of the encephalocele and reconstruction of the skull base was successfully accomplished in all 3 cases, with favorable results. CONCLUSIONS The described endonasal management algorithm for congenital transsphenoidal encephaloceles is a safe, viable alternative to traditional transcranial and transpalatal approaches, and avoids much of the morbidity associated with these open techniques.

Cranioplasty and Duraplasty with Transcranial Color-Coded Duplex Sonography after Aneurysmal Subarachnoid Hemorrhage.

BACKGROUND: Transcranial color-coded duplex sonography (TCCS) is a noninvasive technique for monitoring of cerebral vasospasm after neurosurgery for aneurismal subarachnoid hemorrhage. In this surgery, surgical materials are used. The goal of the study was to identify materials that can be used with ultrasound and to propose methods for cranioplasty and duraplasty using materials that permit TCCS. METHODS: The chosen neurosurgical materials were titanium mesh plate (TMP), Gore-tex, SEAMDURA, gelatinous sponge, and oxidized cellulose. B-mode imaging was recorded with the materials placed between urethane resin 10 mm in diameter and the urethane phantom model. TCCS was performed to detect middle cerebral artery flow through TMP and Gore-tex. RESULTS: TMP and SEAMDURA permitted penetration of ultrasound in B-mode and Doppler imaging, but the other materials did not do so. CONCLUSIONS: A postcraniotomy window (PCW) on a line extending from the horizontal portion of M1 using only TMP permitted flow imaging with TCCS. In external decompression, TCCS was effective only without use of Gore-tex around the postcraniotomy window. This method allows the middle cerebral artery flow to be detected easily.

A simple method for the repair of frontal sinus fracture: the bone mesh pull-up technique.

Accurate reduction and stable fixation are important in the treatment of frontal sinus fracture. In this article, we introduce a rapid and simple method for the treatment of frontal fractures and restoration of normal forehead contour, named the "bone mesh pull-up technique" (BMPUT). We describe our experience with this technique in frontal trauma cases, with emphasis on the technical aspects and clinical results of this simple method. Postoperative computed tomography scans showed adequate reduction of displaced bone fragments in all cases. Esthetic results were satisfactory and no complications related to this procedure, such as uncontrollable sinus bleeding, infection, and posterior table and brain injuries, were observed. Follow-ups ranged from 1 to 24 months, with an average of 12 months. Contour deformities were effectively restored and cosmetic results were very good. The BMPUT is a safe procedure that can be performed with minimal morbidity and offers, good access, and excellent esthetic results.

Reconstruction of Orbital Medial Wall Fracture with Absorbable and Non-Absorbable Orbital Implant: Comparative Study

PURPOSE: To compare the surgical results and complications of medial wall fracture reconstruction using non-absorbable porous polyethylene implants (Medpor(R), Stryker Instruments, Kalamazoo, Michigan, USA) and an absorbable polymer of polyglycolic acid (PGA) and polylactic acid (PLA) (Mesh plate(R), Inion Ltd, Tampere, Finland). METHODS: We retrospectively reviewed the data of patients who underwent reconstruction of medial wall fracture between January 2007 and June 2012 and divided them into 2 groups according to orbital implant type (Medpor(R), Mesh plate(R)). RESULTS: Among the 86 patients, 37 were treated with Medpor(R) and 49 with Mesh plate(R). There was no statistically significant difference in limitation of motion or diplopia score between the 2 groups at postoperative 6 months (Fisher's exact test, p = 0.192, p = 0.128, respectively). Mean postoperative exophthalmometry differences between the eyes were 0.49 +/- 1.04 mm and 0.37 +/- 0.62 mm in Medpor(R) and Mesh plate(R) groups, respectively, showing no statistically significant difference (independent t-test, p = 0.512). Postoperative complications such as inflammation or implant malposition were observed only in 3 patients in the Medpor(R) group. CONCLUSIONS: No difference was observed between Medpor(R) and Mesh plate(R) in terms of surgical results during the postoperative 6 month period after reconstruction of orbital medial wall fracture. However, postoperative complications were observed in 3 patients in the Medpor(R) group.