Anatomy and supply. The thenar musculature consists of four muscles located on the radial side of the palm. Together they form the 'ball' of the thumb known as the thenar eminence. They originate at different carpal bones and distally attach to the thumb. The thenar muscles are: Abductor pollicis brevis muscle: arises from the tubercles of the scaphoid and trapezium, and from the flexor retinaculum.
Steps. 1  1. Choose the proper time to prune lemon trees. 2  2. Remove all fruit from the tree. 3  3. Prune any branches that are damaged or diseased all the way back to the base.  4. Cut any branches that are smaller than the diameter of a 1  pencil. 5. Prune suckers as they appear at any time.  6. Decide if you want an open, compact, or hedge type tree look.
Pruning Citrus Trees â Prune Lemon, Orange Trees. A lot of people are wary of pruning citrus trees because they think it will be difficult, or they might damage the tree. Quite often, citrus trees are neglected and left to grow into a wild state, in the mistaken belief that they will look after themselves. This causes the quality of the fruit to deteriorate, the quantity of fruit to decrease and allows certain diseases to infiltrate the tree. Some regular pruning is therefore necessary.