PubMed · 13229629
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A PONZONI. [Accessory navicular bone].. https://pubmed.ncbi.nlm.nih.gov/13229629/
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This study examined stumbling corrective (tripping) responses to mechanical disturbances applied to the foot during stepping in healthy human infants, in whom independent walking had not yet developed. During treadmill-elicited stepping, a foam-padded baton instrumented with a force transducer was used to deliver light touches to either the dorsum or the side of the foot at various times of the step cycle. Disturbances to the dorsum of the foot during the swing phase resulted in a general enhancement of flexor activity, including a significant facilitation in the tibialis anterior muscle and an increase in knee flexion during swing. There was also an increase in step cycle duration. Stance phase disturbances resulted in a significant inhibitory effect in the quadriceps muscle and after early stance disturbances, a significant prolongation of the stance phase duration. Disturbances applied to the side of the foot during the swing phase of forward stepping did not result in any effect on the kinematic pattern. If the infant was stepping sideways, however, disturbances to the side of the foot resulted in an increase in flexion during the swing phase. The results show that infants have a phase-dependent reflex response to light touches applied to the foot. Furthermore, the reflex response is location specific and task specific. Thus, much of the sophistication necessary for controlling sensory inputs in walking is present well before the onset of independent walking.
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Patients usually cannot assess the technical quality of their care; however, examining a hospitalization through the patients' eyes can reveal important information about the quality of care. Patients are the best source of information about a hospital system's communication, education, and pain-management processes, and they are the only source of information about whether they were treated with dignity and respect. Their experiences often reveal how well a hospital system is operating and can stimulate important insights into the kinds of changes that are needed to close the chasm between the care provided and the care that should be provided. This article examines the case of a patient admitted for ankle arthrodesis due to severe hemophilia-related arthritis. The surgery was successful, but the hospital stay was marked by inefficiency and inconveniences, as well as events that reveal fundamental problems with the hospital's organization and teamwork. These problems could seriously compromise the quality of clinical care. Unfortunately, most of these events occur regularly in U.S. hospitals. Relatively easy and inexpensive ways to avoid many of these problems are discussed, such as reducing variability in non-urgent procedures and routinely asking patients about their experiences and suggestions for improvement.