Surgical Correction of TMJ Bilateral Dislocation with Eminectomy and Capsulorrhaphy as an Adjuvant: Case Reports

Introduction

Anterior excessive movement of the temporomandibular joint (TMJ) is a condition which reduces the quality of life of a person to great extent with the patient always living in the fear of inherent dislocation. Dislocation of the temporomandibular joint represents 3% of all reported joint dislocations.

Case report

In this article, we discuss about two cases where the patients with chronic TMJ dislocation were treated with eminectomy and capsulorrhaphy. Both the patients were reviewed over a period of 1 year and did not show any recurrence of the condition with satisfactory controlled increase in mouth opening.

Conclusion

The combination has proved to be useful for the better neuromuscular control and psychological aspect, i.e., the fear of dislocation. Future of the technique combination lies in further prospective studies.

Postoperative alar base symmetry in complete unilateral cleft lip and palate:A prospective study

In the evolution of cleft lip repair, there have been continuous attempts to minimize local trauma and to improve lip and nasal appearances. In order to obtain an aesthetically balanced development of midface, the primary surgical correction of the nasolabial area is of paramount importance. In this study, the importance of a back-cut extending cephalically above the inferior turbinate at the mucocutaneous junction which elevates the nostril floor on the cleft side for the purpose of achieving symmetry of the alar bases are analyzed by pre and postoperative photographic anthropometry. This study comprised of fifty cases of the unilateral complete cleft lip. At the time of surgery, the patient age ranged from 3-9 months. The surgeries, performed by a single surgeon, employed the standard Millard technique, incorporating Mohler modifications of lip repair. Anthropometric analysis revealed that the preoperative mean difference between the normal side and the cleft side was 0.2056 with a standard deviation of 0.133. In the postoperative analysis, the mean difference was reduced to 0.0174 with a standard deviation of 0.141. The paired t-test showed that the p-value is <0.001, indicating high statistical significance. To conclude, in complete unilateral cleft lip and palate, the geometrically placed nasal back-cut incision has a definite role in the correction of the alar base symmetry during primary surgery.

A hydrophobic disordered peptide spontaneously anchors a covalently bound RNA hairpin to giant lipidic vesicles

The attraction of nucleic acids to lipidic compartments is the first step for carriers of potentially inheritable information to self-organise in functionalised synthetic cells. Confocal fluorescence imaging shows that a synthetic amphiphilic peptidyl RNA molecule spontaneously accumulates at the outer bilayer membranes of phospho- and glycolipidic giant vesicles. Cooperatively attractive interactions of -3.4 to -4.0 kcal mol(-1) between a random coil hydrophobic peptide and lipid membranes can thus pilot lipophobic RNA to its compartmentation. The separation of mixed lipid phases in the membranes further enhances the local concentration of anchored RNA.

Probing the leucyl/phenylalanyl tRNA protein transferase active site with tRNA substrate analogues

Aminoacyl-tRNA protein transferases post-translationally conjugate an amino acid from an aminoacyl-tRNA onto the N-terminus of a target polypeptide. The eubacterial aminoacyl-tRNA protein transferase, L/F transferase, utilizes both leucyl-tRNA(Leu) and phenylalanyl-tRNA(Phe) as substrates. X-ray crystal structures with substrate analogues, the minimal substrate phenylalanyl adenosine (rA-Phe) and inhibitor puromycin, have been used to characterize tRNA recognition by L/F transferase. However analyses of these two X-ray crystal structures reveal significant differences in binding. Through structural analyses, mutagenesis, and enzymatic activity assays, we rationalize and demonstrate that the substrate analogues bind to L/F transferase with similar binding affinities using a series of different interactions by the various chemical groups of the analogues. Our data also demonstrates that enlarging the hydrophobic pocket of L/F transferase selectively enhances puromycin inhibition and may aid in the development of improved inhibitors for this class of enzymes.

Palmar arch reconstruction using dorsal venous arch of foot for revascularisation of multiple digits

A case of trauma causing total loss of superficial and deep palmar arches of hand with ischemia of all the digits was managed using dorsal venous arch of the foot to reconstruct the palmar arch. The ends of the venous arch were anastomosed to radial and ulnar arteries and the tributaries to the arch were coapted to the cut ends of the common digital vessels and princeps pollicis. The surgery yielded gratifying results, successfully revascularising all the digits.

Penile replantation

Penile amputation is rare and hence the paucity of experience and publication. We present our case of self-inflicted penile amputation, which was successfully managed with microsurgical replantation, with relevant literature review.

Total synthesis of a xylo-Puromycin analog

N(6)-bis-demethylated xylo-Puromycin analog 2 was synthesized in 56% over 6 steps from adenosine 3, involving a Mattocks bromo acetylation, a regio- and stereo-selective ribo-epoxide ring opening with sodium azide and an efficient Staudinger-Vilarrasa coupling reaction for which the conditions have been optimized.