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 2,574 km- (1,600 mile-) long river has its source in Zambia and flows through Angola, along the borders of Namibia, Botswana, Zambia, and Zimbabwe, to Mozambique, where it empties into the Indian Ocean.The Zambezi's most spectacular feature is Victoria Falls, the world's largest waterfalls.he 2,574 km- (1,600 mile-) long river has its source in Zambia and flows through Angola, along the borders of Namibia, Botswana, Zambia, and Zimbabwe, to Mozambique, where it empties into the Indian Ocean.