MUD Mired in time...

So, here it is. The knee angle graph (so they call it a graph – they lie). Our Y axis allows 0 to 80 degrees. The X axis shows time as % of one complete stride. About 1.2 seconds is the period for an average height adult. This X axis could be 0 to some long enough time as needed. We see an obvious two curve graph. A small one, ‘stance’ where a foot lands and stays in the mud while about 15 degrees of knee range happens green zone] called ‘stance’. The big curve is about 70 degrees but only the part after ‘toe off’ [looks like a saxophone] is called ‘swing’ [blue zone]. The red boxes on the Y axis show common range for the two flexion peaks. The X axis red boxes are where certain ‘events’ occur during walking as determined by mud. In particular note the box straddling 50% as is quoted everywhere (from mud). That is ‘toe off’ and is the beginning of ‘swing phase’ [where the lifted foot is no longer seen in the mud]. Everything before this is ‘stance phase’… after is ‘stance phase’. Totally bogus. As the knee is at the key center of walking (it is) we will follow the knee angle progression through a full stride (left step + right step or LHS to next LHS). Inman dove deep on the stance details as prosthetics were his target. Swing phase was not his immediate big concern aside from weight distribution etc. So, maybe we need more determinants to get a better handle on stance/swing phase which is a big issue in neurologic conditions. Hmmmmmm….. Could this be better????