Protective effects of polydeoxyribonucleotides on cartilage degradation in experimental cultures.

The capacity of cartilage self-regeneration is considered to be limited. Joint injuries often evolve in the development of chronic wounds on the cartilage surface. Such lesions are associated with articular cartilage degeneration and osteoarthritis.

Segmental analysis of motor conduction velocity in distal tracts of tibial nerve: a coaxial needle electrode study.

Objective: To describe a new method of segmental analysis of motor nerve conduction velocity (mCV) in the tibial nerve (Tn) tract distal to the upper margin of the tarsal tunnel (TT).

Methods: Compound muscle action potentials (CMAPs) were recorded with a coaxial needle electrode from the flexor hallucis brevis muscle (FHB), to test the medial plantar nerve (MPn), and from the flexor digiti quinti brevis (FDQB) and the first dorsal interosseous (FDI) muscles, to test the superficial and deep branches of the lateral plantar nerve (sLPn and dLPn, respectively). CMAPs were elicited by stimulating at three sites located above (S1) and below (S2) the TT and at the sole of the foot (S3 for MPn and S4 for LPn).

Treatment of late complications of intra-articular calcaneal fractures.

The unfortunately frequent complications of the articular fractures of the calcaneus have a high social impact, because of the frequent and long-lasting disability that they cause. This article discusses the treatment of the late complications of intra-articular calcaneal fractures.

Sinus tarsi syndrome and subtalar joint instability.

Sinus tarsi syndrome is a poorly understood term in the orthopedic world. It is thought of as a painful condition of the sinus tarsi that often responds to corticosteroid injection and is associated with a feeling of instability in the hindfoot. Despite references in the literature, there is no agreement on pathognomonic history, clinical tests, or imaging studies that could help in confirming the diagnosis or establishing the etiology.