scholarly journals How Do Pilon Fractures Heal? An Analysis of Dual Plating, Biomechanically Matched Fixation, and Callus Formation

2019 ◽  
Author(s):  
Sean T Campbell ◽  
L. Henry Goodnough ◽  
Brett Salazar ◽  
Justin F. Lucas ◽  
Julius Bishop ◽  
...  
Keyword(s):  
Callus Formation ◽  
Dual Plating ◽  
Pilon Fractures

How do pilon fractures heal? An analysis of dual plating and bridging callus formation

Injury ◽  
2020 ◽  
Vol 51 (7) ◽  
pp. 1655-1661 ◽  
Author(s):  
Sean T. Campbell ◽  
L. Henry Goodnough ◽  
Brett Salazar ◽  
Justin F. Lucas ◽  
Julius A. Bishop ◽  
...  
Keyword(s):  
Callus Formation ◽  
Dual Plating ◽  
Pilon Fractures

Metaphyseal callus formation in pilon fractures is associated with loss of alignment: Is stiffer better?

Injury ◽  
2020 ◽  
Author(s):  
Noelle L. Van Rysselberghe ◽  
Sean T. Campbell ◽  
L. Henry Goodnough ◽  
Brett P. Salazar ◽  
Julius A. Bishop ◽  
...  
Keyword(s):  
Callus Formation ◽  
Pilon Fractures

Failure of dual plating in a complex open distal femur fracture as the result of major trauma

2021 ◽  
Vol 14 (12) ◽  
pp. e245362
Author(s):  
Thomas Robert William Ward ◽  
Kanai Garala ◽  
Bryan Riemer
Keyword(s):  
Callus Formation ◽  
Case Reports ◽  
Open Reduction Internal Fixation ◽  
Fixation Method ◽  
Dual Plating ◽  
Metaphyseal Bone ◽  
Polytrauma Patient ◽  
High Degree ◽  
Technique Failure ◽  
Massive Bone

A 61-year-old polytrauma patient was admitted with a right distal comminuted metaphyseal femoral fracture with intra-articular extension (Orthopaedic Trauma Association 33C2.3 classification) among other injuries. Due to the high degree of comminution and massive bone loss, this was initially managed with a dual plating open reduction internal fixation. Dual plating has shown to be a superior fixation method than single variable angle locking compression plate (VA-LCP) plating providing greater fixation in metaphyseal bone. Our case reports the failure of dual plating which required removal of metalwork and subsequent fixation using intramedullary nail and plate technique. Failure of dual plating is not well documented in the literature. The most recent radiographs taken 15 months postrevision surgery show that the bone has started to heal with evidence of callus formation.

scholarly journals Minimally invasive plate osteosynthesis with dual plating for periprosthetic distal femoral fractures following total knee arthroplasty

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Yong-Geun Park ◽  
Hyunseong Kang ◽  
Jung-Kook Song ◽  
Jaehwang Lee ◽  
Joseph Y. Rho ◽  
...  
Keyword(s):  
Distal Femur ◽  
Callus Formation ◽  
Plate Osteosynthesis ◽  
Femoral Fractures ◽  
Minimally Invasive Plate Osteosynthesis ◽  
Distal Femoral Fractures ◽  
Femur Fractures ◽  
Dual Plating ◽  
Total Knee

Abstract Introduction Adequate treatment for periprosthetic distal femur fractures is challenging because of various reasons, including severe osteoporosis and distal fragments that are too small or too distal. We have introduced a new surgical technique for dual plating of periprosthetic distal femur fractures following total knee arthroplasty (TKA) and determined the clinical and radiological outcomes of minimally invasive plate osteosynthesis (MIPO) with a dual locking compression plate (LCP). Materials and methods Between January 2010 and July 2019, 18 patients [mean age, 74.8 (68–89) years; average follow-up period, 14.8 (12–43) months] underwent MIPO with distal femoral LCP laterally and proximal humeral internal locking system (PHILOS) medially for periprosthetic distal femoral fractures following TKA. The minimum follow-up was 1 year. The clinical and radiological outcomes were assessed using the modified WOMAC scores, knee range of motion, time to callus formation, time to union, and complications of malunion, nonunion, and shortening. Results The average time to union was 18.4 weeks (range, 10–51 weeks) and to callus formation was 7.8 weeks (range, 2–14 weeks). At the 1-year follow-up, the average JLETS was 37.6 (range, 24–53), average knee ROM was 110.3° (range, 80–135°), and average varus-valgus angles of the distal femur were 3.2° (range, −2.9–10.5°). No nonunion, broken plates, or implant failure occurred. Malunion occurred in three patients. Conclusion MIPO with dual LCP is a reliable method for stabilizing periprosthetic distal femoral fractures following TKA, with satisfactory bone union rates and low complication rates.

scholarly journals Minimally Invasive Plate Osteosynthesis with Dual Plating for Periprosthetic Distal Femoral Fractures Following Total Knee Arthroplasty

2020 ◽  
Author(s):  
Yong-Geun Park ◽  
Hyunseong Kang ◽  
Jung-Kook Song ◽  
Jaehwang Lee ◽  
Joseph Y. Rho ◽  
...  
Keyword(s):  
Distal Femur ◽  
Callus Formation ◽  
Plate Osteosynthesis ◽  
Femoral Fractures ◽  
Minimally Invasive Plate Osteosynthesis ◽  
Distal Femoral Fractures ◽  
Femur Fractures ◽  
Dual Plating ◽  
One Year

Abstract Introduction: Adequate treatment for periprosthetic distal femur fractures is challenging because of various reasons, including severe osteoporosis and distal fragments that are too small or too distal. We have introduced a new surgical technique for dual plating of periprosthetic distal femur fractures following total knee arthroplasty (TKA) and determined the clinical and radiological outcomes of minimally invasive plate osteosynthesis (MIPO) with a dual locking compression plate (LCP). Materials and methods: Between January 2010 and July 2019, 18 patients [mean age, 74.8 (68–89) years; average follow-up period, 14.8 (12–43) months)] underwent MIPO with distal femoral LCP laterally and proximal humeral internal locking system (PHILOS) medially for periprosthetic distal femoral fractures following TKA. The minimum follow-up was one year. The clinical and radiological outcomes were assessed using the modified WOMAC scores, knee range of motion, time to callus formation, time to union, and complications of malunion, nonunion, and shortening.Results: The average time to union was 18.4 weeks (range, 10–51 weeks) and to callus formation was 7.8 weeks (range, 2–14 weeks). At the one-year follow-up, the average JLETS was 37.6 (range, 24–53), average knee ROM was 110.3° (range, 80°–135°), and average varus-valgus angles of the distal femur were 3.2° (range, -2.9°–10.5°). No nonunion, broken plates, or implant failure occurred. Malunion occurred in three patients.Conclusion: MIPO with dual LCP is a reliable method for stabilizing periprosthetic distal femoral fractures following TKA, with satisfactory bone union rates and low complication rates.

Hyperplastic Callus Formation in Osteogenesis Imperfecta

1994 ◽  
Vol 35 (5) ◽  
pp. 426-428
Author(s):  
A. -J. Burchardt ◽  
AA. Wagner ◽  
P. Basse
Keyword(s):  
Osteogenesis Imperfecta ◽  
Callus Formation ◽  
Hyperplastic Callus Formation ◽  
Hyperplastic Callus

FACTORS AFFECTING THE REGENERATION OF PEPPER (CAPSICUM ANNUUM L.)

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1120G-1120
Author(s):  
J. L. Jacobs ◽  
C. T. Stephens
Keyword(s):  
Growth Hormone ◽  
Silver Nitrate ◽  
Callus Formation ◽  
Leaf Explants ◽  
Regeneration System ◽  
Factors Affecting ◽  
Nitrate Concentrations ◽  
Leaf Differentiation ◽  
Whole Plants

Several growth hormone combinations and silver nitrate concentrations were examined for their effect on regeneration of different pepper genotypes. Primary leaf explants from in vitro seedlings were cultured on a revised Murashige and Skoog medium supplemented with auxin, cytokinin and 1.6% glucose. Combinations of different concentrations of indole-3-acetic acid (IAA), 0-5 mg/l, and 6-benzylaminopurine (BAP), 0-5 mg/l, were tested to determine the most effective medium for shoot primordium formation. Experiments with IAA and BAP did not result in a specific growth hormone combination appropriate for regeneration of all genotypes tested. Of the silver nitrate concentrations tested, 10 mg/l resulted in the best shoot and leaf differentiation and reduced callus formation. Differences in organogenic response of individual genotypes were evaluated on a single regeneration medium. Whole plants were regenerated from 11 of 63 genotypes examined. Based on these experiments, a reproducible regeneration system for pepper was developed with a total of 500 plants regenerated to date.

Utilization of Different Seedling Explants for in Vitro Propagation of Hibiscus syriacus

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 478e-479
Author(s):  
M.M. Jenderek ◽  
A.J. Olney
Keyword(s):  
Callus Formation ◽  
Adventitious Bud ◽  
Root Explants ◽  
Petiole Explants ◽  
Bud Formation ◽  
Hypocotyl Explants ◽  
Leaf Petiole ◽  
Adventitious Bud Formation ◽  
Hibiscus Syriacus

Hibiscus syriacus is a difficult species in micropropagation due to its endogenous contamination and recalcitrant shoot formation; therefore, studies on using explants other than shoot tip or axillary buds of growing shrubs were initiated. Three different seedling fragments (root, hypocotyl, and leaf petiole) from aseptically germinated seedlings of hibiscus (var. Aphrodite) were evaluated for adventitious bud formation, shoot and leaf development. The explants were cultured on McCown's woody plant basal salt medium supplemented with KNO3 (800 mg/L), adenine sulfate (80 mg/L) and MS vitamins containing BA or 2iP or TDZ at 0.5, 1.0, 2.2, 4.4 and 10 mM. Adventitious buds were present on all of the three different explants grown on medium containing TDZ; however, the most abundant bud formation, with many small leaves originating from callus was observed on hypocotyl explants cultured on medium with 1 mM of TDZ. Petiole explants were the most frequent to develop short shoots (≈15 mm) and one to nine leaves without callus formation, where 70% of hypocotyl and the root explants formed leaves originating from callus. Callus was induced on all explant types regardless of the level or type of cytokinin used. However, the number of shoots produced by any explant type was low, petioles cultured on 0.5 and 1mM of TDZ were the most suitable material for non-callus shoot development in H. syriacus. Hypocotyl explants proved to be an excellent source for adventitious bud formation but their ability to develop shoots needs to be investigated.

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