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nani: 28 Sep : 04:31 AM

plz pleasec tell me where to do phd in india

Nikhilphysio: 02 Jun : 03:55 AM

I am working as physiotherapist in Shalby hospital ahmedabad for 4 years. I have passed out from Rajiv gandhi university of health and sciences Bangalore. I want to apply for Newzealand physiotherapy board registration so anyone there from India who got registered as physiotherapist in new zealand please help me.

Arun: 10 May : 12:36 AM

Hi Priyank, welcome. Feel free to go through these forum threads returned by search [link]

Priyank: 09 May : 10:28 PM

Hi..need advice. What are the options in Australia after MPT?

Arun: 04 Mar : 02:01 AM

Happy birthday Boopathi and somasimple


Physio Blogs by Arun

Oct 22 2010

Concave-Convex Rule - Explained in Hundred Words


The concave-convex rule is considered to be of great significance in manualtherapy and joint mobilization. Here is a note that will probably help you understand the concept.

Osteokinematic motion (Osteokinematics)
Osteokinematic motions are GROSS MOVEMENT of bones at the joints.

E.g: flexion/extension, abduction / adduction


Arthrokinematic motion (Arthrokinematics)
Arthrokinematics motions are small amplitude ACCESSORY MOVEMENTS at the joint articulating surfaces.

E.g: roll, glide, spin


The Rule:
  1. Convex surface moving on concave surface (which is fixed.)
    -> The osteokinematic motion is in the opposite direction as the arthrokinematic motion.

  2. Concave surface moving on convex surface (which is fixed.)
    -> The osteokinematic motion is in the same direction as the arthrokinematic motion.


A Video
The following video posted by nasypany1 in youtube describes it well. Watch the video below.



There is an evidenced based reviews challenging the concept. One of our user Hardik discusses it in this forum post - [link]