lag screw


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lag screw

one of several screws placed through bony fracture fragments to immobilize the fragments, used in repair of mandibular fractures.

lag screw

Orthopedics Any screw used to achieve interfragmental compression; LSs do not protect fractures from bending, rotation or axial loading forces, and other devices should be used to provide these functions. See Screw.

lag

1. the time elapsing between application of a stimulus and the resulting reaction.
2. the early period after inoculation of bacteria into a culture medium, in which the growth or cell division is slow.

lag screw
a screw used in compression plating of bone fractures; it has U-shaped threads.
References in periodicals archive ?
Radiographs showed displacement of the fracture and intrapelvic migration of the lag screw through the femoral head and the medial wall of the acetabulum.
Thus, lag screws, bolts or other "positive connection" devices are required.
24 cm can significantly decrease the lag screw sliding distances, PLWF rate and reoperation rate.
The end distances of lag screw joints at each end of the wall section were 3.
utilization of the setscrews to affix the lag screw to the nails, as would be clinically done to prevent excessive screw movement.
slip response, and the predicted strength using the lag screw equation (EYM) in the Canadian timber design standard (CSA 2005).
The preoperative lag screw size and length of plate were assessed using digital x-rays.
Once the holes are drilled, attach the four long lag screws with washers.
This study is based on an elementary analysis, (1,2) in which the hip joint reaction force (JRF) acting on the lag screw can be resolved into two forces, one acting perpendicular to the lag screw and causing bending ([F.
This could be due to the increased sliding of the lag screw in the DHS group, allowing greater fracture impaction, as compared to the PFN10.
A careful and adequate insertion of the blade or lag screw may be a more important consideration than the biomechanical stability.
Tenders are invited for 120 Degree Double Angle Barrel Plate Set : Indigenous Make, One Set Comprises Of One Barrel-Plate And One Dhs Lag Screw, Intended For Valgus Intertrochantric Osteotomy, Made Of High Tensile Strength Medical Grade Stainless Steel, Double Angle With Angle Of Barrel With The Plate At First Bend @ 120 Degree And Of The Barrel With The Plate Beyond The Second Bend Is 130 -135 Degree, Length 4-10 Holes On Interchangeable/Exchangeable Basis, Dhs Lag Screw Of Size 50-100Mm On Interchangeable Basis, Exact Proportion Of Various Sizes To Be Supplied To Be Verified From Matron Ot After The Issue Of Po,