Minimally invasive lag screw fixation of sacroiliac luxation/fracture using a dedicated novel instrument system: Apparatus and technique description

2017 ◽  
Vol 47 (1) ◽  
pp. 93-103 ◽  
Author(s):  
Loïc M. Déjardin ◽  
Albane H. Fauron ◽  
Laurent P. Guiot ◽  
Reunan P. Guillou
Keyword(s):  
Minimally Invasive ◽  
Screw Fixation ◽  
Lag Screw

Comparison between posterior sacral plate stabilization versus minimally invasive transiliac-transsacral lag-screw fixation in fractures of sacrum: a single-centre experience

2018 ◽  
Vol 43 (1) ◽  
pp. 177-185 ◽  
Author(s):  
Francesco Liuzza ◽  
Noemi Silluzio ◽  
Michela Florio ◽  
Omar El Ezzo ◽  
Gianpiero Cazzato ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Screw Fixation ◽  
Single Centre ◽  
Lag Screw ◽  
Single Centre Experience

Comparison of open reduction versus minimally invasive surgical approaches on screw position in canine sacroiliac lag-screw fixation

2016 ◽  
Vol 29 (04) ◽  
pp. 290-297 ◽  
Author(s):  
Danielle Marturello ◽  
Laurent Guiot ◽  
Reunan Guillou ◽  
Charles DeCamp ◽  
Loïc Déjardin
Keyword(s):  
Minimally Invasive ◽  
Open Reduction ◽  
Screw Fixation ◽  
Screw Placement ◽  
Surgical Approaches ◽  
Minimally Invasive Osteosynthesis ◽  
Pilot Hole ◽  
Lag Screw ◽  
Multiplanar Reconstructions ◽  
Minimally Invasive Surgical

Summary Objective: To compare accuracy and consistency of sacral screw placement in canine pelves treated for sacroiliac luxation with open reduction and internal fixation (ORIF) or minimally invasive osteosynthesis (MIO) techniques. Methods: Unilateral sacroiliac luxations created experimentally in canine cadavers were stabilized with an iliosacral lag screw applied via ORIF or MIO techniques (n = 10/group). Dorsoventral and craniocaudal screw angles were measured using computed tomography multiplanar reconstructions in transverse and dorsal planes, respectively. Ratios between pilot hole length and sacral width (PL/SW-R) were obtained. Data between groups were compared statistically (p <0.05). Results: Mean screw angles (±SD) were greater in ORIF specimens in both transverse (p <0.001) and dorsal planes (p <0.004). Mean PL/SW-R was smaller (p <0.001) in the ORIF group, yet was greater than 60%. While pilot holes exited the first sacral end-plate in three of 10 ORIF specimens, the spinal canal was not violated in either group. Conclusions: This study demonstrates that MIO fixation of canine sacroiliac luxations provides more accurate and consistent sacral screw placement than ORIF. With proper techniques, iatrogenic neurological damage can be avoided with both techniques. The PL /SW-R, which relates to safe screw fixation, also demonstrates that screw penetration of at least 60% of the sacral width is achievable regardless of surgical approach. These findings, along with the limited dissection needed for accurate sacral screw placement, suggest that MIO of sacroiliac luxations is a valid alternative to ORIF.

scholarly journals Biomechanical Evaluation of Tarsometatarsal Fusion Comparing Crossing Lag Screws and Lag Screw With Locking Plate

2021 ◽  
pp. 107110072110335
Author(s):  
Sarah Ettinger ◽  
Lisa-Christin Hemmersbach ◽  
Michael Schwarze ◽  
Christina Stukenborg-Colsman ◽  
Daiwei Yao ◽  
...  
Keyword(s):  
Locking Plate ◽  
Screw Fixation ◽  
Operative Procedure ◽  
Fixation Technique ◽  
Lag Screw ◽  
Group 15 ◽  
Fresh Frozen ◽  
Biomechanical Evaluation ◽  
The Stability ◽  
End Stage

Background: Tarsometatarsal (TMT) arthrodesis is a common operative procedure for end-stage arthritis of the TMT joints. To date, there is no consensus on the best fixation technique for TMT arthrodesis and which joints should be included. Methods: Thirty fresh-frozen feet were divided into one group (15 feet) in which TMT joints I-III were fused with a lag screw and locking plate and a second group (15 feet) in which TMT joints I-III were fused with 2 crossing lag screws. The arthrodesis was performed stepwise with evaluation of mobility between the metatarsal and cuneiform bones after every application or removal of a lag screw or locking plate. Results: Isolated lag-screw arthrodesis of the TMT I-III joints led to significantly increased stability in every joint ( P < .05). Additional application of a locking plate caused further stability in every TMT joint ( P < .05). An additional crossed lag screw did not significantly increase rigidity of the TMT II and III joints ( P > .05). An IM screw did not influence the stability of the fused TMT joints. For TMT III arthrodesis, lag-screw and locking plate constructs were superior to crossed lag-screw fixation ( P < .05). TMT I fusion does not support stability after TMT II and III arthrodesis. Conclusion: Each fixation technique provided sufficient stabilization of the TMT joints. Use of a lag screw plus locking plate might be superior to crossed screw fixation. An additional TMT I and/or III arthrodesis did not increase stability of an isolated TMT II arthrodesis. Clinical Relevance: We report the first biomechanical evaluation of TMT I-III arthrodesis. Our results may help surgeons to choose among osteosynthesis techniques and which joints to include in performing arthrodesis of TMT I-III joints.

Transverse Lag Screw Fixation in Midline Mandibulotomy

2000 ◽  
Vol 109 (3) ◽  
pp. 334-339 ◽  
Author(s):  
Joseph M. Serletti ◽  
John U. Coniglio ◽  
Salvatore J. Pacella ◽  
John D. Norante
Keyword(s):  
Reliable Method ◽  
Screw Fixation ◽  
Postoperative Radiotherapy ◽  
Major Complication ◽  
Recurrent Tumor ◽  
Minor Complication ◽  
Anterior Cortex ◽  
Lag Screw ◽  
The Mean

Vertical midline mandibulotomy has provided a relatively simple and efficient means of obtaining access to intraoral tumors that are too large or too posterior to be removed transorally. Midline mandibulotomy has had the advantage of nerve and muscle preservation and places the osteotomy outside the typical field of radiotherapy, in contrast to lateral and paramedian osteotomies. Plate and screw fixation has been the usual means of osteosynthesis for these mandibulotomies; however, plate contouring over the symphyseal surface has been a time-consuming process. Unless the plate was contoured exactly, mandibular malalignment and malocclusion in dentulous patients has occurred. Use of parallel transverse lag screws has become a popular method of osteosynthesis for parasymphyseal fractures, and we have extended their use for mandibulotomy fixation. This paper reports our clinical experience with transverse lag screw fixation of midline mandibulotomies in 9 patients from 1994 to 1997. There were 7 men and 2 women with a mean age of 56 (range 35 to 71 years). The pathological diagnosis in all patients was squamous cell carcinoma; 8 cases were primary, and 1 patient presented with recurrent tumor. No tumors involved the mandibular periosteum. One patient had had previous radiotherapy, and 3 patients underwent postoperative radiotherapy. The mean follow-up has been 17 months (range 9 to 27). There was 1 minor complication and 1 major complication related to our technique. The major complication was a delayed nonunion of the mandibulotomy. This occurred because the 2 parallel screws were placed too close to one another, and this placement resulted in a delayed sagittal fracture of the anterior cortex and subsequent nonunion. Transverse lag screw fixation has not affected occlusion in our dentulous patients. Speech and diet were normal in the majority of our patients. Transverse lag screw fixation of the midline mandibulotomy has been a relatively safe, rapid, and reliable method for tumor access and postextirpation mandibular stabilization and has significant advantages over other current methods of mandibulotomy and fixation.

Current Minimally Invasive Surgical Concepts for Sacral Insufficiency Fractures

2021 ◽  
Author(s):  
Ulrich Josef Albert Spiegl ◽  
Klaus J. Schnake ◽  
Bernhard Ullrich ◽  
Max J. Scheyerer ◽  
Georg Osterhoff ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Minimally Invasive ◽  
Screw Fixation ◽  
Case Series ◽  
Fracture Morphology ◽  
Iliosacral Screw ◽  
Insufficiency Fractures ◽  
Minimally Invasive Surgical ◽  
Sacral Insufficiency Fractures ◽  
Non Surgical Treatment

AbstractAn increasing incidence of sacral insufficiency fractures in geriatric patients has been documented, representing a major challenge to our healthcare system. Determining the accurate diagnosis requires the use of sectional imaging, including computed tomography and magnetic resonance imaging. Initially, non-surgical treatment is indicated for the majority of patients. If non-surgical treatment fails, several minimally invasive therapeutic strategies can be used, which have shown promising results in small case series. These approaches are sacroplasty, percutaneous iliosacral screw fixation (S1 with or without S2), trans-sacral screw fixation or implantation of a trans-sacral bar, transiliac internal fixator stabilisation, and spinopelvic stabilisation. These surgical strategies and their indications are reported in detail. Generally, treatment-related decision making depends on the clinical presentation, fracture morphology, and attending surgeonʼs experience.

The Effect of Infection and Lag Screw Fixation on Revascularization and New Bone Deposition in Membranous Bone Grafts in a Rabbit Model

1996 ◽  
Vol 98 (2) ◽  
pp. 338-345 ◽  
Author(s):  
Jeffrey A. Fialkov ◽  
John H. Phillips ◽  
Sharon L. Walmsley ◽  
I. Morava-Protzner
Keyword(s):  
Screw Fixation ◽  
Rabbit Model ◽  
Bone Grafts ◽  
Lag Screw ◽  
Bone Deposition

scholarly journals Learning Curve of Minimally Invasive C1-C2 Trans-articular Screw Fixation (MIS-TAS): Over A Period of Five Years

2021 ◽  
Vol 6 (1) ◽  
pp. 21-25
Author(s):  
Saijyot Raut ◽  
Sanjeev Asati ◽  
Mohit Kumar Meena ◽  
Vishal G Kundnani ◽  
Jwalant Y Patel
Keyword(s):  
Minimally Invasive ◽  
Learning Curve ◽  
Screw Fixation
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