Review of Drop Hallux: Assessment and Surgical Repair.

Peroneal nerve palsy is common. The hallmark clinical manifestation of peroneal nerve palsy is drop foot. In the drop foot condition, the ankle cannot flex, and the foot does not clear the ground during the swing phase of gait.

Immediate Weightbearing of First Metatarsophalangeal Joint Fusion Comparing Buried Crossed Kirschner Wires Versus Crossing Screws: Does Incorporating the Sesamoids Into the Fusion Contribute to Higher Incidence of Bony Union?

First metatarsophalangeal joint (MTPJ) arthrodesis remains a commonly used and reliable procedure for a variety of pathologies of the first MTPJ. Many costly fixation constructions have been described to achieve union with first MTPJ arthrodesis. We hypothesized that the incidence of union would be the same for both buried Kirchner (K)-wire and solid crossed screw fixation with immediate weightbearing.

Near-silence of isothiocyanate carbon in (13)C NMR spectra: a case study of allyl isothiocyanate.

(1)H and (13)C NMR spectra of allyl isothiocyanate (AITC) were measured, and the exchange dynamics were studied to explain the near-silence of the ITC carbon in (13)C NMR spectra. The dihedral angles α = ∠(C1-C2-C3-N4) and β = ∠(C2-C3-N4-C5) describe the conformational dynamics (conformation change), and the bond angles γ = ∠(C3-N4-C5) and ε = ∠(N4-C5-S6) dominate the molecular dynamics (conformer flexibility). The conformation space of AITC contains three minima, Cs-M1 and enantiomers M2 and M2'; the exchange between conformers is very fast, and conformational effects on (13)C chemical shifts are small (νM1 - νM2 < 3 ppm).

Subtalar Joint Distraction Arthrodesis to Correct Calcaneal Valgus in Pediatric Patients with Tarsal Coalition: A Case Series.

Subtalar joint middle facet coalitions commonly present in children who have a painful, rigid, pes planovalgus foot type. The middle facet coalition allows rearfoot forces to be distributed medially through the coalition, and this can result in arthritis or lateral tarsal wedging. The senior author has used a wedged bone graft distraction subtalar joint arthrodesis to correct calcaneal valgus and restore the talar height in these patients.

Electronic structures and spin density distributions of BrO2 and (HO)2BrO radicals. Mechanisms for avoidance of hypervalency and for spin delocalization and spin polarization.

The results are reported of an ab initio study of bromine dioxide BrO2, 1, and of the T-shaped trans- and cis-dihydroxides 2 and 3 of dihydrogen bromate (HO)2BrO. The thermochemistry has been explored of potential synthetic routes to (HO)2BrO involving water addition to BrO2, hydroxyl addition to bromous acid HOBrO, 4, protonation/reduction of bromic acid HOBrO2, 5, via tautomers 6-8 of protonated bromic acid, and by reduction/protonation of bromic acid via radical anion [HOBrO2](-), 9. The potential energy surface analyses were performed at the MP2(full)/6-311G* level (or better) and with the consideration of aqueous solvation at the SMD(MP2(full)/6-311G*) level (or better), and higher-level energies were computed at levels up to QCISD(full,T)/6-311++G(2df,2pd)//MP2.