This friend: Your injury is a periosteal injury, which was caused by a strong collision. It usually takes about a month to recover. Usually, this kind of injury may be seen in X-ray films, but it is not uncommon to miss the diagnosis because of the location and shooting angle of the injury. This kind of injury is a slight injury to the bone. If the epidermis is not damaged, it will not cause serious consequences such as osteomyelitis. So there is no need for special treatment, just stick an analgesic cream for protection, hot compress or bake infrared rays. But you can't do massage, so as not to aggravate the injury.

Tenderness is directional and can be explained, because the injured and broken periosteum will tilt up. If you touch the damaged part in the direction, the pain will get worse. Otherwise, if you hold it down, the pain will be less severe.

The above views are for reference only, hoping to relieve your worries.