Three main problems that can cause a luxating patella. 1  The first abnormality that is usually present is a trochlear groove that is too shallow. In order for the patella not to jump out of this tract, the groove must be deep enough to accommodate and cradle the patella as it moves up and down in the groove.
The longest river in South Africa is the Orange River which starts off life in the Drakensberg Mountains and works its way westwards to Alexander Bay and then onto the west coast of South Africa.
The river rises in North West Zambia at Mwinilunga. the zambezi river starts in congo. the zambezi river starts in congo. Africa. The river seven starts at the Cambrian mountains in mid wales.It is the longest river in Britain and finishes in the Bristol Channel.he river rises in North West Zambia at Mwinilunga. the zambezi river starts in congo. the zambezi river starts in congo. Africa. The river seven starts at the Cambrian mountains in mid wales.