Preventive measures could have been implemented when the tree was a juvenile, failure to adopt pruning techniques such as formative pruning comes with consequences.
Cable bracing and rod bracing
Rod bracing is mainly used to resist tensile and more seldom compressive stress in the immediate region of a zone of weakness or defect, for example co-dominant stems and cavities. Cable bracing provides support to weak limbs. Both techniques are commonly used in conjunction with one another.
Non-invasive bracing systems incorporating belt attachments and shock absorbers can be prescribed as opposed to cable bracing.
Large branches that are excessively long and heavy, which are within a few meters from ground level are worthy candidates for propping. Propping can be used to support an entire tree with an undesirable lean, although this will be limited to relatively small tree species.
Trees that have developed a weak root plate system and pose an unacceptable risk, need to be addressed in an appropriate manner. Large trees that have been transplanted may also warrant Guying to help with stabilisation until the root plate is sufficient to support itself.