The dynasty of the disk

Bone Setting

Vesalius (1543) described the intervertebral disk, but that was of purely anatomic interest. In the 19th century there were a number of postmortem reports of major trauma and disk damage causing paraplegia. Luschka (1858) first described two cases of prolapsed intervertebral disk with a connection from the nucleus pulposus through the posterior longitudinal ligament to the protrusion. Later Schmorl (1929) and Andrae (1929) made postmortem studies of large series of spines and described both...

Probability of return to work

Probability Impact Healthcare

We can look at this graph of return to work in another way. For any given time off work, we can use the data in Figure 7.2 to calculate the probability of returning to work (Fig. 7.6). McGill (1968) first pointed out that the longer anyone is off work with back pain, the lower the chance he or she will return to work. More recent large data sets confirm this (Krause et al 1999). It is equally true today and it is fundamental to management. This may seem obvious, but many health professionals...