Application of Posture Fixation Technique in Abdominal Tumor Radiotherapy

Potassium permanganate has been successfully employed to study membranous structures such as endoplasmic reticulum, Golgi, plastids, plasma membrane and myelin sheath. Since KMnO4 is a strong oxidizing agent, deposition of manganese or its oxides account for some of the observed contrast in the lipoprotein membranes, but a good deal of it is due to the removal of background proteins either by dehydration agents or by volatalization under the electron beam. Tissues fixed with KMnO4 exhibit somewhat granular structure because of the deposition of large clusters of stain molecules. The gross arrangement of membranes can also be modified. Since the aim of a good fixation technique is to preserve satisfactorily the cell as a whole and not the best preservation of only a small part of it, a combination of a mixture of glutaraldehyde and acrolein to obtain general preservation and KMnO4 to enhance contrast was employed to fix plant embryos, green algae and fungi.

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Simple keel fixation technique for endoscopic repair of anterior glottic stenosis

Yearbook of Otolaryngology-Head and Neck Surgery ◽

10.1016/s1041-892x(07)70117-8 ◽

2007 ◽

Vol 2007 ◽

pp. 131-133 ◽

Cited By ~ 1

Author(s):

M.A. Keefe

Keyword(s):

Fixation Technique ◽

Endoscopic Repair

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CHEMISTRY OF GONADOTROPHINS IN RELATION TO THEIR ANTIGENIC PROPERTIES

Acta Endocrinologica ◽

10.1530/acta.0.062s013 ◽

1969 ◽

Vol 62 (1_Suppl) ◽

pp. S13-S30 ◽

Cited By ~ 8

Author(s):

W. R. Butt

Keyword(s):

Biological Activity ◽

Guinea Pigs ◽

Complement Fixation ◽

Neuraminic Acid ◽

Fixation Technique ◽

Immunological Activity ◽

Antigenic Properties ◽

Specific Antisera ◽

Structural Differences

ABSTRACT Several chemical differences between FSH, LH and HCG have been reported: thus LH and HCG are richer in proline than FSH and FSH and HCG contain more N-acetyl neuraminic acid than LH. Sub-units of LH are formed by treatment with urea, guanidine or acid. HCG also may contain two sub-units. The sub-units from LH are biologically inert but retain their immunological activity: biological activity is restored when the sub-units are incubated together. There is much evidence from chemical and enzymic reactions that antigenic groups are distinct from those parts of the molecule essential for biological activity. N-acetyl neuraminic acid and probably other carbohydrates in FSH and HCG are not involved in immunological activity but are necessary for biological activity. Histidine, methionine and possibly cysteine appear to be essential for biological but not immunological activity of FSH, while tryptophan and possibly tyrosine are not essential for either. A few highly specific antisera to gonadotrophins have been prepared in rabbits and guinea pigs to crude antigens: there is no evidence that purified antigens are more likely to produce specific antisera. Differences in the immunological reactivities of urinary compared with pituitary gonadotrophins have been observed both by radioimmunoassay and by the complement fixation technique. The latter may be particularly useful for detecting structural differences in the hormones.

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Effects of Fixation Technique On Thoracic Epidural Catheter Displacement

Case Medical Research ◽

10.31525/ct1-nct03976154 ◽

2019 ◽

Author(s):

Keyword(s):

Epidural Catheter ◽

Fixation Technique ◽

Thoracic Epidural ◽

Thoracic Epidural Catheter

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Abstaining from symptomatic implants of modified tension band wiring by nonabsorbable suture fixation for transverse patella fractures

Journal of Orthopaedic Surgery and Research ◽

10.1186/s13018-021-02494-3 ◽

2021 ◽

Vol 16 (1) ◽

Author(s):

Puripun Jirangkul ◽

Arkaphat Kosiyatrakul

Keyword(s):

Steel Wire ◽

Clinical Results ◽

Tension Band ◽

Fixation Technique ◽

Nonabsorbable Suture ◽

Patella Fractures ◽

Sufficient Stability ◽

The Mean ◽

Conventional Stainless Steel

Abstract Background Modified tension band fixation has become commonly used for transverse patella fractures. The conventional stainless steel wire provides sufficient stability but may be associated with complications. Objective The study aimed to evaluate the effectiveness of a new modified tension band fixation technique for transverse patella fractures using a nonabsorbable suture. Material and methods We present the result of a prospective series using a nonabsorbable suture (FiberWire) for transverse patella fractures. The mean follow-up period totaled 12 months. A total of 16 patients were evaluated by radiographic and clinical review. The postoperative clinical evaluation employed Lysholm and Böstman scores. Result All clinical results on follow-up were good to excellent. Minimal intra-articular joint stepping and further fracture displacement were recorded. No patient needed re-operation, and functional outcomes of the knee were satisfactory. No significant differences were found between the injured and contralateral knee range of motion. No symptomatic implants and skin complications were noted, and all fractures were completed heal within 15 weeks. Conclusion FiberWire provided sufficient stability and reduced postoperative complications. The results proved appropriate, and the technique has merit, as it obviates the need for re-operation.

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Biomechanical Evaluation of Tarsometatarsal Fusion Comparing Crossing Lag Screws and Lag Screw With Locking Plate

Foot & Ankle International ◽

10.1177/10711007211033541 ◽

2021 ◽

pp. 107110072110335

Author(s):

Sarah Ettinger ◽

Lisa-Christin Hemmersbach ◽

Michael Schwarze ◽

Christina Stukenborg-Colsman ◽

Daiwei Yao ◽

...

Keyword(s):

Locking Plate ◽

Screw Fixation ◽

Operative Procedure ◽

Fixation Technique ◽

Lag Screw ◽

Group 15 ◽

Fresh Frozen ◽

Biomechanical Evaluation ◽

The Stability ◽

End Stage

Background: Tarsometatarsal (TMT) arthrodesis is a common operative procedure for end-stage arthritis of the TMT joints. To date, there is no consensus on the best fixation technique for TMT arthrodesis and which joints should be included. Methods: Thirty fresh-frozen feet were divided into one group (15 feet) in which TMT joints I-III were fused with a lag screw and locking plate and a second group (15 feet) in which TMT joints I-III were fused with 2 crossing lag screws. The arthrodesis was performed stepwise with evaluation of mobility between the metatarsal and cuneiform bones after every application or removal of a lag screw or locking plate. Results: Isolated lag-screw arthrodesis of the TMT I-III joints led to significantly increased stability in every joint ( P < .05). Additional application of a locking plate caused further stability in every TMT joint ( P < .05). An additional crossed lag screw did not significantly increase rigidity of the TMT II and III joints ( P > .05). An IM screw did not influence the stability of the fused TMT joints. For TMT III arthrodesis, lag-screw and locking plate constructs were superior to crossed lag-screw fixation ( P < .05). TMT I fusion does not support stability after TMT II and III arthrodesis. Conclusion: Each fixation technique provided sufficient stabilization of the TMT joints. Use of a lag screw plus locking plate might be superior to crossed screw fixation. An additional TMT I and/or III arthrodesis did not increase stability of an isolated TMT II arthrodesis. Clinical Relevance: We report the first biomechanical evaluation of TMT I-III arthrodesis. Our results may help surgeons to choose among osteosynthesis techniques and which joints to include in performing arthrodesis of TMT I-III joints.

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