Online citations, reference lists, and bibliographies.

Anchor Lag Screw Vs Conventional Lag Screw In Mandibular Fractures: A Series Of 30 Cases.

V. Kumar, D. Mehrotra, S. Mohammad, R. Singh, V. Singh, G. Singh, S. Gambhir*
Published 2013 · Medicine

Cite This
Download PDF
Analyze on Scholarcy
UNLABELLED Lag screw osteosynthesis is a well proven technique. Its application is limited by the fact that the spherical head of the screw act as wedge. Combining this screw with a bioconcave washer has broadened the range of applications for lag screw osteosynthesis in the maxillofacial region. PURPOSE The aim of the study was to compare the efficacy of anchor lag screw with conventional lag screw in anterior mandibular fractures. PATIENTS AND METHOD Thirty patients with anterior mandible fractures with no concomitant fractures, infection or extraoral communication, who visited our outpatient Department of Oral and Maxillofacial Surgery, were included in the study after obtaining their informed consent. Patients were randomly divided into two groups; where Group A underwent fixation using conventional lag screw and Group B anchor lag screw. The fixation system used included 2 mm titanium lag screws of sizes 25 mm, 27 mm and 30 mm and 3 mm titanium bioconcave washer. At each follow up visit, clinical data was collected detailing clinical presentation of healing and radiographic findings. RESULTS Radiographic features at post surgery evaluation indicated loss of bone contact around the screw head and bone resorption in five patients of Group A, thus causing loosening of lag screw whereas none of the patient in Group B, was found to have any such complication. CONCLUSIONS The findings support the hypothesis that bioconcave washer aids in holding up the farthest fragment at the interface of the fracture fragment. Application of bioconcave washer provides easy loading of lag screw.
This paper references
The self adapting washer for lag screw fixation of mandibular fractures: finite element analysis and preclinical evaluation.
H. Terheyden (1999)
Bone scintigraphy in the evaluation of bone grafts used for mandibular reconstruction
G. Berding (1994)
Use of lag screws for fractures of the mandibular body.
E. Ellis (1996)
Traditional methods vs rigid internal fixation of mandible fractures.
J. Leach (1995)
Lag-screw fixation of anterior mandibular fractures using biodegradable polylactide screws: a preliminary report.
I. Kallela (1999)
Application of minimal-access techniques in lag screw fixation of fractures of the anterior mandible.
C. Forrest (1999)
Bite forces in patients after treatment of mandibular angle fractures with miniplate osteosynthesis according to Champy.
K. L. Gerlach (2002)
Self-adapting washer system for lag screw fixation of mandibular fractures. Part II: In vitro mechanical characterization of 2.3 and 2.7 mm lag screw prototypes and in vivo removal torque after healing.
H. Terheyden (1999)
Biomechanical evaluation of different types of rigid internal fixation techniques for subcondylar fractures.
K. Tominaga (2006)
Lag screw fixation of anterior mandibular fractures: a retrospective analysis of intraoperative and postoperative complications.
P. Tiwana (2007)
Radiographic changes during bone healing after mandibular fractures.
T. Kawai (1997)
2D-finite element analyses and histomorphology of lag screws with and without a biconcave washer.
P. Schuller-Götzburg (1999)
Transverse Lag Screw Fixation in Midline Mandibulotomy
J. Serletti (2000)
Lag-screw fixation of mandibular parasymphyseal and angle fractures.
I. Kallela (1996)

This paper is referenced by
Semantic Scholar Logo Some data provided by SemanticScholar