scholarly journals Arthroscopic Transosseous Suture Button Fixation Technique for Treatment of Large Anterior Glenoid Fracture

2019 ◽  
Vol 8 (11) ◽  
pp. e1319-e1326 ◽  
Author(s):  
Arasch Wafaisade ◽  
Thomas R. Pfeiffer ◽  
Maurice Balke ◽  
Daniel Guenther ◽  
Paola Koenen
2021 ◽  
Vol 23 (3) ◽  
pp. 221-228
Author(s):  
Michał Piotrkowski ◽  
Jan Poszepczyński ◽  
Marcin Domżalski

The tibiofibular syndesmosis is a ligamentous structure connecting the distal ends of the tibia and fibula. This article presents and compares the available methods of treatment of syndesmosis injuries. Current publications from the online database PubMed and relevant available books are analysed and compared with AO Surgery guidelines. Metal and bioabsorbable syndesmotic screws and the suture button technique, including all possible modifications of these approaches, are compared. The focus is on the technical aspects of the procedures, functional outcomes and complications of these procedures. According to the literature, the best long-term functional outcomes are obtained with the dynamic fixation method involving the suture button. This fixation technique is closest to a physiological connection, there is no need to subsequently remove the implant and return to work is faster. Given all this, the popularity of this fixation technique can be expected to increase dynamically.


Author(s):  
M. A. Hayat

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.


1969 ◽  
Vol 62 (1_Suppl) ◽  
pp. S13-S30 ◽  
Author(s):  
W. R. Butt

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.


Hand ◽  
2021 ◽  
pp. 155894472199422
Author(s):  
Owolabi Shonuga ◽  
Kristen Nicholson ◽  
Jack Abboudi ◽  
Gregory Gallant ◽  
Christopher Jones ◽  
...  

Background Thumb carpometacarpal (CMC) joint arthroplasty is a common procedure in the surgical management of symptomatic thumb basal joint arthritis. Following trapeziectomy, a number of suspensionplasty techniques are often used, but limited comparative evidence exists between these techniques. The central aim of this study was to prospectively compare the outcomes of 2 suspensionplasty techniques following trapeziectomy: suture button (TightRope) versus ligament reconstruction and tendon interposition (LRTI). Methods Prospective data were collected on 112 consecutive patients with Eaton stage III-IV thumb CMC arthritis who underwent open trapeziectomy and suspensionplasty. There were 53 LRTI and 59 TightRope suspensionplasty procedures. Outcomes were measured using the Quick Disabilities of the Arm, Shoulder, and Hand ( QuickDASH) questionnaire, Visual Analogue Scale (VAS) for pain, radiographic analysis, and lateral pinch strength. Patient demographic data and complications were also recorded. Results Patients undergoing TightRope suspensionplasty had significantly higher trapeziometacarpal index and thus less subsidence than the LRTI group at 2 weeks (0.22 vs 0.17 [ P < .0001]) and 3 months (0.17 vs 0.15 [ P < .05]) postoperatively. TightRope suspensionplasty also had a significantly lower QuickDASH score at 2 weeks (64.7 vs 74.6 [ P < .05]), 3 months (20.7 vs 32.5 [ P < .05]), and 1 year postoperatively (7.57 vs 21.5 [ P < .05]) compared with the LRTI group. However, there was no difference in VAS pain, lateral pinch strength, reoperation, or complications at any time point between groups. Conclusions Thumb CMC joint arthroplasty performed with a TightRope suspensionplasty versus LRTI yielded short-term improved resistance to subsidence, long-term greater improvement in clinical outcome by QuickDASH, and no difference in pain or complication rates.


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