Cortical Bone Screw Fixation

The intraoral cortical bone screw fixation technique carries many advantages over traditional methods of intermaxillary fixation. Simplicity of the technique, reduction of operative time, and reduction of risk of transmission of human immunodeficiency virus and hepatitis make this an important technique in the armamentarium of busy facial trauma surgeons. Since 1992, 45 mandibular fractures in 29 patients treated with the intraoral cortical bone screw technique for intermaxillary fixation were retrospectively analyzed. At our institution, this technique has become the workhorse method of repairing most mandiublar fractures and is associated with minimal complications.

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Cortical bone screw fixation in ionically modified apatite cements

Journal of Biomedical Materials Research Part B Applied Biomaterials ◽

10.1002/jbm.b.30197 ◽

2005 ◽

Vol 73B (2) ◽

pp. 238-243 ◽

Cited By ~ 7

Author(s):

J. E. Barralet ◽

C. O. Duncan ◽

M. S. Dover ◽

D. C. Bassett ◽

H. Nishikawa ◽

...

Keyword(s):

Cortical Bone ◽

Screw Fixation ◽

Bone Screw

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Intraoral cortical bone-screw fixation: An alternative to arch bars

Otolaryngology ◽

10.1016/s0194-5998(99)80389-1 ◽

1999 ◽

Vol 121 (2_suppl) ◽

pp. P206-P206

Author(s):

A John Vartanian ◽

Aijaz Alvi

Keyword(s):

Cortical Bone ◽

Screw Fixation ◽

Bone Screw

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Determination of Optimal Torque for Cortical Bone Screw Fixation in Equine Third Metacarpal Bone

10.1055/s-0039-1692257 ◽

2019 ◽

Author(s):

J. Whyard ◽

S. Brounts ◽

P. Muir ◽

H. Ploeg ◽

B. Yang

Keyword(s):

Cortical Bone ◽

Screw Fixation ◽

Metacarpal Bone ◽

Bone Screw

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Pullout Strength of Screws in Foal Third Metacarpal Bone after Overdrilling a 4.5 mm Hole

Veterinary and Comparative Orthopaedics and Traumatology ◽

10.1055/s-0038-1632548 ◽

1998 ◽

Vol 11 (04) ◽

pp. 200-204 ◽

Cited By ~ 1

Author(s):

K. Kelly ◽

G. S. Martin ◽

D. J. Burba ◽

S. A. Sedrish ◽

R. M. Moore

Keyword(s):

Cortical Bone ◽

Metacarpal Bone ◽

Pullout Strength ◽

Cancellous Screw ◽

Bone Screw ◽

Screw Insertion ◽

Holding Power ◽

Cortical Screw ◽

Metaphyseal Bone

SummaryThe purpose of the study was to determine and to compare the in vitro pullout strength of 5.5 mm cortical versus 6.5 mm cancellous bone screws inserted in the diaphysis and metaphysis of foal third metacarpal (MCIII) bones in threaded 4.5 mm cortical bone screw insertion holes that were then overdrilled with a 4.5 mm drill bit. This information is relevant to the selection of a replacement screw if a 4.5 mm cortical screw is stripped during orthopaedic surgery. In vitro pullout tests were performed in two independent cadaver studies, each consisting of 12 foal MCIII bones. Two 4.5 mm cortical screws were placed either in the mid-diaphysis (study 1) or distal metaphysis (study 2) of MCIII bones. The holes were then overdrilled with a 4.5 mm bit and had either a 5.5 mm cortical or a 6.5 mm cancellous screw inserted; screw pullout tests were performed at a rate of 0.04 mm/s until screw or bone failure occurred.The bone failed in all of the tests in the diaphyseal and metaphyseal bone. The holding power for 6.5 mm cancellous screws was significantly (p <0.05) greater than for 5.5 mm cortical screws in both the diaphysis and metaphysis. There was not any difference in the holding power of screws in either the diaphysis or the metaphysis between proximal and distal screw holes.If a 4.5 mm cortical bone screw strips in MCIII diaphyseal or metaphyseal bone of foals, a 6.5 mm cancellous screw would provide greater holding power than a 5.5 mm cortical screw.In order to provide information regarding selection of a replacement screw if a 4.5 mm cortical screw is stripped, the in vitro pullout strength was determined for 5.5 mm cortical and 6.5 mm cancellous screws inserted in third metacarpal diaphyseal and metaphyseal bone of foals in which threaded 4.5 mm cortical bone screw insertion holes had been overdrilled with a 4.5 mm bit. The holding power of the 6.5 mm cancellous screw was significantly greater than the 5.5 mm cortical screw in both the diaphysis and metaphysis of foal third metacarpal bone. Thus, it appears that if a 4.5 mm cortical screw is stripped during orthopaedic surgery in foals, a 6.5 mm cancellous screw would provide superior holding power.

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Tibial Tuberosity Transposition Stabilization Using a Cortical Screw Placed Adjacent to the Tuberosity in Dogs with Patellar Luxation

VCOT Open ◽

10.1055/s-0039-1691782 ◽

2019 ◽

Vol 02 (01) ◽

pp. e43-e49

Author(s):

Barbro Filliquist ◽

Sivert Viskjer ◽

Susan M. Stover

Keyword(s):

Medical Records ◽

Screw Fixation ◽

Tibial Tuberosity ◽

Fixation Method ◽

Bone Screw ◽

Cortical Screw ◽

Implant Complications ◽

Tibial Tuberosity Fracture ◽

Fracture Development ◽

Fissure Formation

Objectives The aim of this study was to describe a screw fixation method of the tibial tuberosity after transposition during surgical treatment of patellar luxation and to report complications and outcome of the procedure. Materials and Methods Medical records (2010–2016) of dogs treated for patellar luxation with tibial tuberosity transposition stabilization using a cortical bone screw placed adjacent to the tuberosity were retrospectively reviewed. Radiographs acquired immediately after surgery were evaluated for fissures. Proximal tibial dimensions and tibial tuberosity segments were measured. Intraoperative and postoperative complications were recorded. Results One-hundred and six dogs and 131 stifle surgeries were included. Implant complications associated with the screw occurred in 2/106 dogs (1.9%). Two dogs developed tibial tuberosity fracture and proximal displacement within 1 week of surgery and required stabilization with pin and tension band. Patellar reluxation rate following surgery was 6.9% (9/131 procedures). Presence of a fissure on postoperative radiographs increased the odds of tibial tuberosity fracture development (p < 0.001), while greater tibial tuberosity size (p = 0.023) and larger distal cortical attachment (p = 0.018) decreased the odds of fissure formation. Clinical significance Tibial tuberosity transposition can be achieved with a cortical screw placed lateral or medial to the tibial tuberosity.

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HERBERT SCREW FIXATION FOR THE TREATMENT OF SCAPHOLUNATE LIGAMENT RUPTURE

Hand Surgery ◽

10.1142/s0218810498000088 ◽

1998 ◽

Vol 03 (01) ◽

pp. 47-55 ◽

Cited By ~ 11

Author(s):

Susan L. Filan ◽

Timothy J. Herbert

Keyword(s):

Open Reduction ◽

Screw Fixation ◽

Moderate Activity ◽

Activity Levels ◽

Scapholunate Ligament ◽

Ligament Repair ◽

Wrist Motion ◽

Bone Screw ◽

Ligament Rupture ◽

Full Loading

Complete rupture of the scapholunate ligament was treated by open reduction, ligament repair and internal splintage with a Herbert bone screw. After an average of 12 months, the screw was removed to allow full loading of the repair. In 33 procedures, there were 22 good and 11 poor results. In five cases with a poor outcome, the screw pulled or fractured out of the scaphoid or lunate. Grip and range of wrist motion improved in patients with a good outcome, and repair of the ligament was noted at all revision and open screw removal surgeries. A comparison of the good and poor results leads us to recommend this technique for patients with relatively recent injuries and light to moderate activity levels. Longstanding injuries and heavy occupational wrist loading led to poorer results.

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Posterior lumbar interbody fusion with cortical bone trajectory screw fixation versus posterior lumbar interbody fusion using traditional pedicle screw fixation for degenerative lumbar spondylolisthesis: a comparative study

Journal of Neurosurgery Spine ◽

10.3171/2016.3.spine151525 ◽

2016 ◽

Vol 25 (5) ◽

pp. 591-595 ◽

Cited By ~ 34

Author(s):

Hironobu Sakaura ◽

Toshitada Miwa ◽

Tomoya Yamashita ◽

Yusuke Kuroda ◽

Tetsuo Ohwada

Keyword(s):

Cortical Bone ◽

Pedicle Screw ◽

Surgical Outcomes ◽

Recovery Rate ◽

Interbody Fusion ◽

Screw Fixation ◽

Posterior Lumbar Interbody Fusion ◽

Lumbar Interbody Fusion ◽

Cortical Bone Trajectory

OBJECTIVE Several biomechanical studies have demonstrated the favorable mechanical properties of the cortical bone trajectory (CBT) screw. However, no reports have examined surgical outcomes of posterior lumbar interbody fusion (PLIF) with CBT screw fixation for degenerative spondylolisthesis (DS) compared with those after PLIF using traditional pedicle screw (PS) fixation. The purposes of this study were thus to elucidate surgical outcomes after PLIF with CBT screw fixation for DS and to compare these results with those after PLIF using traditional PS fixation. METHODS Ninety-five consecutive patients underwent PLIF with CBT screw fixation for DS (CBT group; mean followup 35 months). A historical control group consisted of 82 consecutive patients who underwent PLIF with traditional PS fixation (PS group; mean follow-up 40 months). Clinical status was assessed using the Japanese Orthopaedic Association (JOA) scale score. Fusion status was assessed by dynamic plain radiographs and CT. The need for additional surgery and surgery-related complications was also evaluated. RESULTS The mean JOA score improved significantly from 13.7 points before surgery to 23.3 points at the latest follow-up in the CBT group (mean recovery rate 64.4%), compared with 14.4 points preoperatively to 22.7 points at final follow-up in the PS group (mean recovery rate 55.8%; p < 0.05). Solid spinal fusion was achieved in 84 patients from the CBT group (88.4%) and in 79 patients from the PS group (96.3%, p > 0.05). Symptomatic adjacent-segment disease developed in 3 patients from the CBT group (3.2%) compared with 9 patients from the PS group (11.0%, p < 0.05). CONCLUSIONS PLIF with CBT screw fixation for DS provided comparable improvement of clinical symptoms with PLIF using traditional PS fixation. However, the successful fusion rate tended to be lower in the CBT group than in the PS group, although the difference was not statistically significant between the 2 groups.

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