central to vygotsky-inspired sociocultural theory (sct) is the notion of zpd seen by sla researchers as a useful framework within which l2 teaching and learning can take place. van lier (2004) argues that the zpd could be activated in diverse proximal contexts (pcs) and is not limited to the expert-novice scenario. . this study probed whether iranian efl learners' collaborative task performance...

The distal radioulnar joint (DRUJ) is a complex articulation allowing significant rotational and translational motion. Stability of the DRUJ depends on bony contact, intrinsic stabilizers of the triangular fibrocartilage complex, and extrinsic stabilizers of the distal forearm. Understanding the anatomy of this articulation is paramount in clinical decision making for the treatment of disorders...

Instability of the distal ulna is a fairly common problem after acute distal radius fracture (DRF), distal radius malunion, triangular fibrocartilage complex injury, and a host of other types of trauma. We present a new anatomic technique to stabilize the distal ulna with a tendon graft augmented with Mersilene tape, which has been used primarily to treat unidirectional (dorsal or volar) instab...

A rare case of an isolated traumatic palmar dislocation of the distal radioulnar joint is presented. Clinically, there is a loss of pronation and supination. The dislocation was treated using an open reduction, reinsertion of the capsule-ligamentous complex and temporary stabilization using K-wires.

The transradial approach as an access for percutaneous coronary intervention (PCI) has been widely adopted. However, anatomical variations and stenoses may pose significant challenges to the operator. We report a case of successful transradial PCI in a patient with a complete radioulnar loop.

This study correlated morphologic abnormalities of idiopathic carpal tunnel syndrome (CTS) with the severity of CTS using 3-T magnetic resonance imaging (MRI). The relationship of the severity of CTS and the cross-sectional area of the median nerve (CSA) was assessed at several levels. Seventy wrists of 35 patients (27 women and 8 men) with unilateral idiopathic CTS underwent nerve conduction s...

Dorsal and palmar subluxation of the distal ulna can be difficult to both diagnose and treat. Patients often present long after their initial injuries with posttraumatic arthritic changes in the distal radioulnar joint. Hemiresection interposition arthroplasty is a salvage procedure that is reliable for both pain relief and restoration of motion.

Radioulnar contrasts (numerically: differences) between ridge counts of individual fingers the human hand have been identified as promising features in respect to prenatal signalling. In this study, we compared results a meta-analysis intersex differences radioulnar published mean values dermatoglyphic on (calculated from higher RC each finger) with obtained already calculated at level.Searchin...