Application of the Locking Compression Plate (LCP)

Richardson, Dean W.

doi:10.1002/9781119108757.ch10

Cited by 7 publications

(3 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All screws extended two to three threads beyond the far cortex to ensure full engagement of the screws. After all screws had been placed, the screws were tightened using a digital hand‐held torque measuring device (Cedar DID‐4 Digital Torque Screwdriver, Sugisaki Meter CO) with the insertion torque limited to 400 N‐cm as recommended for 4.0 mm locking screws by the manufacturer and previous reports 19,21,22 . Peak insertion torque (PIT) was recorded in the computer software (Microsoft Office Professional Plus 2016, Microsoft) for all placed screws.…”

Section: Methodsmentioning

confidence: 99%

Effect of cyclic loading on the stability of screws placed in the locking plates used to bridge segmental bone defects

Grzeskowiak

Freeman

Harper

et al. 2020

Journal Orthopaedic Research

View full text Add to dashboard Cite

The objective of this study was to evaluate the ex vivo effect of cyclic loading on the stability of screws placed in locking plates used to bridge segmental bone defects. The primary interface stability was assessed using peak reverse torque. Eighteen, 8‐hole stainless‐steel 4.5 mm locking plates and 4.0‐mm self‐tapping locking‐head screws were used to stabilize 40‐mm segmental defects in goat tibiae. Treatment groups included control constructs without cyclic loading (n = 6) and constructs tested to 5000 (n = 6) and 10,000 cycles (n = 6) of 600 N compressive axial loading. The insertion of all screws was standardized to 400 N‐cm insertion torque. Peak reverse torque was measured immediately after screw placement (control), or after the completion of the respective loading cycles. The difference between treatment groups was compared using univariate analysis of variance. The analysis revealed a significant difference in peak reverse torque of the screws among the treatment groups (p = .000). The mean reverse torque values equaled 343.5 ± 18.3 N‐cm for non‐cycled controls, 303.3 ± 25.9 and 296.0 ± 42.9 N‐cm after 5000 and 10,000 cycles, respectively. Among all treatment groups, screws placed in the distal bone segment tended to have lesser peak reverse torque reduction than those placed in the proximal segment and the difference was proportional to the number of cycles (p = .562; p = .255; p = .013 in control, and after 5000 and 10,000 cycles, respectively). Cyclic loading may have a negative effect on the primary stability of screws placed in locking plate constructs used to bridge segmental bone defects and could contribute to the risk of screw loosening.

show abstract

Section: Methodsmentioning

confidence: 99%

Effect of cyclic loading on the stability of screws placed in the locking plates used to bridge segmental bone defects

Grzeskowiak

Freeman

Harper

et al. 2020

Journal Orthopaedic Research

View full text Add to dashboard Cite

show abstract

“…Locking compression plates consist of a combihole that has threaded screw holes adjacent to conventional screw holes. The threaded screw holes are used for locking screws with the presence of threads on screw head, and conventional screw holes are used for conventional (standard) screws (Richardson, 2019). Small locking compression plates do not require precise contact of bone plate with bone that aids in maintaining flow of blood underneath bone plate.…”

Section: Introductionmentioning

confidence: 99%

Parametric experimental investigation of additive manufacturing-based distal ulna bone plate: a response surface methodology-based design approach

Sharma

Gupta

Mudgal

2023

RPJ

View full text Add to dashboard Cite

Purpose The implications of metallic biomaterials involve stress shielding, bone osteoporosis, release of toxic ions, poor wear and corrosion resistance and patient discomfort due to the need of second operation. This study aims to use additive manufacturing (AM) process for fabrication of biodegradable orthopedic small locking bone plates to overcome complications related to metallic biomaterials. Design/methodology/approach Fused deposition modeling technique has been used for fabrication of bone plates. The effect of varying printing parameters such as infill density, layer height, wall thickness and print speed has been studied on tensile and flexural properties of bone plates using response surface methodology-based design of experiments. Findings The maximum tensile and flexural strengths are mainly dependent on printing parameters used during the fabrication of bone plates. Tensile and flexural strengths increase with increase in infill density and wall thickness and decrease with increase in layer height and wall thickness. Research limitations/implications The present work is focused on bone plates. In addition, different AM techniques can be used for fabrication of other biomedical implants. Originality/value Studies on application of AM techniques on distal ulna small locking bone plates have been hardly reported. This work involves optimization of printing parameters for development of distal ulna-based bone plate with high mechanical strength. Characterization of microscopic fractures has also been performed for understanding the fracture behavior of bone plates.

show abstract

“…5 Finally, the LCP combi-hole can accept both cortical or locking-head screws, allowing the surgeon to utilize both the interfragmentary compression afforded by conventional compression plating and stability provided by the locking mechanism. 6 There are some disadvantages to use of the LCP. Though absolute contouring to the bone surface is not necessary, significant bending is still required to match the plate to the steep angle of the mandible.…”

Section: Introductionmentioning

confidence: 99%

Internal Fixation of a Complicated Mandibular Fracture in a Filly Using a String-of-Pearls Locking Plate Assisted by a 3D Printed Model

et al. 2020

View full text Add to dashboard Cite

Objective The aim of this study was to describe the successful surgical treatment of a complicated mandibular fracture with a 3.5 mm string-of-pearls (SOP) locking plate in a 5-month-old Appaloosa filly presenting with neurological signs. Study Design This is a case report. Results The neurological signs were due to severe head trauma and stabilized with medical treatment. Financial concerns initially prevented advanced imaging; radiographs identified a mandibular symphysis fracture, a fracture of the left vertical ramus that originated at the junction between the horizontal and vertical ramus and extended toward the coronoid process and rostral maxillary fractures. Following intra-dental wiring of the symphysis fracture, a lateral malocclusion developed. Computed tomography additionally identified fractures of the right wing of the basisphenoid bone, right zygomatic arch, left paracondylar process and the lateral body of the mandible. The vertical ramus fracture was repaired utilizing a 20-hole 3.5 mm SOP plate contoured to the ventral aspect of the angle of the mandible. A scaled (1:4) three-dimensional printed model aided pre- and intra-operative surgical planning. The filly was comfortable and eating well at the 4-week recheck. Radiographs showed good callus formation at the maxilla, healing of the mandibular symphysis and ramus. Just prior to the 10-week recheck, the filly suffered severe enterocolitis and was euthanatized. Conclusion The locking function of the SOP plate provided adequate stability for the fracture to heal without the expense of locking screws. The three-dimensional printed model aided in navigation of the complex fracture without the availability of fluoroscopy.

show abstract

Application of the Locking Compression Plate (LCP)

Cited by 7 publications

References 21 publications

Effect of cyclic loading on the stability of screws placed in the locking plates used to bridge segmental bone defects

Effect of cyclic loading on the stability of screws placed in the locking plates used to bridge segmental bone defects

Parametric experimental investigation of additive manufacturing-based distal ulna bone plate: a response surface methodology-based design approach

Internal Fixation of a Complicated Mandibular Fracture in a Filly Using a String-of-Pearls Locking Plate Assisted by a 3D Printed Model

Contact Info

Product

Resources

About