Objective: Subclassify grade III of Hattrup and Johnson classification into two groups, according to the remaining percentage plantar articular cartilage, propose a treatment option other than arthrodesis for some these patients. Methods: Twenty-one patients with hallux rigidus were operated on between February 2015 January 2020. The radiographic Johnson’s was used, submitted frontal, lateral, ...

Hallux rigidus (HR) is the limitation of motion at the first metatarsophalangeal (MTP) joint, most commonly secondary to degenerative arthritis. Surgical options for treating HR include 2 general categories: joint salvage and joint destruction. A hybrid of techniques from the 2 categories has emerged: cartilage resurfacing, interpositional arthroplasty, and arthrodiastasis. These procedures add...

We report a case of a 65-year-old man with a painful nonunion of the first metatarsophalangeal joint (MTPJ). It is one of the main severe complications of this surgery. Its prevalence is described between 5% and 10% across different operative techniques. The implantation of hemicup-prosthesis has been successfully used for the hallux rigidus treatment with very promising results. In our case re...

Mercerized wood species were impregnated with N, N-dimethylacetamid. The FT-IR showed enhanced absorption at 1419 cm(-C-/CH3), and the 1267 cm (-N-/ CH3) stretching band confirmed the polymerization reaction. Differential scanning calorimetric analysis indicated that the decomposition temperature of polymer-filled wood gives a higher thermal stability compared to the raw material. Polymer-fille...