Internal fixation of proximal fractures of the 2nd and 4th metacarpal and metatarsal bones using bioabsorbable screws

2018 ◽  
Vol 96 (3) ◽  
pp. 76-81 ◽  
Author(s):  
M Mageed ◽  
T Steinberg ◽  
N Drumm ◽  
N Stubbs ◽  
J Wegert ◽  
...  
Keyword(s):  
Internal Fixation ◽  
Metatarsal Bones ◽  
Bioabsorbable Screws

In Vitro Strain Patterns of the Intact Equine Metacarpus and Metatarsus Following Plate Luting

1990 ◽  
Vol 3 (03) ◽  
pp. 84-89 ◽  
Author(s):  
J. R. Cordey ◽  
D. M. Nunamaker ◽  
M. L. Tate ◽  
T. McIff ◽  
S. M. Perren ◽  
...  
Keyword(s):  
Internal Fixation ◽  
Bone Cement ◽  
Mechanical Behaviour ◽  
Plate Fixation ◽  
Bone Surface ◽  
Physiological Conditions ◽  
Cement Layer ◽  
Metatarsal Bones ◽  
The Stability

SummaryWith internal fixation of fractures using a plate and screws, the stability of the fixation is achieved mainly by the force generated by either lag screws or plate screws. The plate protects the bone from overload. The important mechanism in the function of plate fixation is the friction between the undersurface of the plate and the bone surface. It has become evident that plate luting, i. e. interposition of a bone cement layer between the plate and the bone, will alter the transmission of expected forces due to improved contact between the plate and the bone. The purpose of this project was to evaluate the load/strain relationships that occurred following plate luting and to understand why this procedure improved the mechanical behaviour of plate fixation in equine bone. We measured the strain patterns that occurred in unplated, plated and luted equine third metacarpal and metatarsal bones under simulated physiological conditions. Plate application resulted in reduced strain under the plate and increased strain at the opposite cortex. Following plate luting, this effect was more pronounced. Hysteresis between the loading-unloading cycle was less pronounced in the luted plates. This indicated that plate luting increased the effect of strain protection.Plate luting was shown to reduce the strain under the plate and to increase it in the transcortex, effectively increasing the effect of strain protection.

Plate Removal after Internal Fixation of Limb Fractures: A Retrospective Study of Indications and Complications in 48 Horses

2020 ◽  
Author(s):  
Brice Donati ◽  
Anton E. Fürst ◽  
Francesca Del Chicca ◽  
Michelle A. Jackson
Keyword(s):  
Surgical Site Infection ◽  
Internal Fixation ◽  
Complication Rate ◽  
Clinical Signs ◽  
Strong Relationship ◽  
Implant Removal ◽  
Site Infection ◽  
Plate Removal ◽  
Metatarsal Bones ◽  
Limb Fractures

Abstract Objectives The aim of this study was to determine the indications for, and complications of, plate removal surgery in horses that underwent internal fixation of limb fractures. Study Design Medical records of horses presented to our hospital between 1990 and 2015 for the removal of plates after treatment of limb fractures were reviewed. Data collected at the time of initial presentation, including signalment, history, fracture features and treatment and information about the indications, timing and complications of implant removal were reviewed. Results The most common bones involved were the ulna (n = 19) and third metacarpal and metatarsal bones (n = 14). A total of 63 plates were removed from 48 horses during 53 separate surgeries, and the complication rate was 6/48; six horses had complications related to implant removal, which included persistent infection (n = 1) and refracture (n = 5). Complications related to implant removal were associated with comminuted fractures (p = 0.002), age > 3 years (p = 0.016) and the presence of surgical site infection (p = 0.001). Conclusion Plate removal after fracture healing is necessary in patients with implant-associated clinical signs. There is a strong relationship between the complication rate and the degree of comminution of the original fracture, increasing age and the presence of surgical site infection. The surgeon must be aware of these risk factors when planning plate removal.

Metallic internal fixation

Cell ◽  
1973 ◽  
Vol 5 (4) ◽  
pp. 359-359
Keyword(s):  
Internal Fixation

Holding Power of Orthopaedic Screws in Metacarpal and Metatarsal Bones of Young Calves

1992 ◽  
Vol 05 (03) ◽  
pp. 100-103 ◽  
Author(s):  
G. Jean ◽  
J. K. Roush ◽  
R. M. DeBowes ◽  
E. M. Gaughan ◽  
J. Kirpensteijn
Keyword(s):  
Shear Strength ◽  
Tensile Load ◽  
Young Female ◽  
Limiting Factor ◽  
Holding Power ◽  
Metatarsal Bones ◽  
Bone Width ◽  
Load To Failure ◽  
Holstein Calves

SummaryThe holding power and holding power per mm bone width of 4.5 mm and 5.5 mm cortical and 6.5 mm cancellous orthopaedic screws were obtained by tensile load-to-failure studies in excised metacarpal and metatarsal bones of young female Holstein calves. Holding power and holding power per mm bone width of 6.5 mm orthopaedic screws were significantly greater than those of 4.5 and 5.5 mm orthopaedic screws in the diaphysis and metaphysis. Significant differences were not detected between holding power and holding power per mm bone width of 4.5 and 5.5 mm orthopaedic screws. The holding power was not different between metacarpi and metatarsi. The limiting factor in all tests of holding power was the shear strength of the bone. We found that 6.5 mm orthopaedic screws have the greatest holding power in the metacarpal and metatarsal bones of young calves.This study compares the holding power of 4.5 mm and 5.5 mm cortical and 6.5 mm cancellous orthopaedic screws in excised metacarpal and metatarsal bones from young female Holstein calves. We found that 6.5 mm orthopaedic screws have the greatest holding power.

The Repair and Healing of Two Traumatic Ilial Body Fractures Adjacent to Cemented Total Hip Acetabular Components

1992 ◽  
Vol 05 (02) ◽  
pp. 85-89
Author(s):  
P. K. Shires ◽  
T. L. Dew
Keyword(s):  
Internal Fixation ◽  
Cancellous Bone ◽  
Surgical Techniques ◽  
Autogenous Bone ◽  
Cancellous Bone Graft ◽  
Standard Methods ◽  
Intravenous Antibiotics ◽  
Prophylactic Use ◽  
Acetabular Components ◽  
Autogenous Bone Grafts

SummaryThis report has documented the repair and healing of two ilial fractures in dogs which were compounded by the presence of a cemented acetabular prosthesis. While specific recommendations can not be made from such a small number of cases, the information presented herein suggests that such fractures will heal without complication if aseptic surgical techniques and standard methods of internal fixation are employed. The authors strongly recommend the prophylactic use of intravenous antibiotics and the placement of cancellous bone graft when the repair of such fractures is attempted.Two traumatic ilial fractures involving the cement/bone interface of acetabular prostheses were repaired using lag screws, cerclage wires, and autogenous bone grafts. The fractures healed and ambulatory function was regained.

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