Whether the left arm muscle minor injury can be detained needs to be judged according to the specific situation and relevant laws and regulations. Generally speaking, minor injuries are not criminal offences and will not lead to detention. However, if intentional injury causes harm to others, it may involve public security administration punishment, and according to the relevant provisions of the Law of People's Republic of China (PRC) on Public Security Administration Punishment, it may be subject to administrative detention.

First, the definition of minor injuries

Minor injury refers to the damage to limbs or appearance, the dysfunction of hearing, vision or other organs or other injuries that are slightly harmful to personal health, including minor contusions, abrasions and frostbite.

Second, the identification of intentional injury behavior

If intentional injury causes minor injury to the left arm muscle, it may involve public security management punishment. According to Article 43 of the Law of People's Republic of China (PRC) on Public Security Administration Punishment, anyone who beats others or intentionally hurts others' bodies shall be detained for more than five days and less than ten days, and shall be fined between 200 yuan and 500 yuan; If the circumstances are minor, they shall be detained for not more than five days or fined not more than five hundred yuan. Under any of the following circumstances, the offender shall be detained for more than 10 and less than 15, and fined for more than 500 yuan 1000 yuan:

1, gang up to hit people and hurt others;

2. Beating or injuring disabled people, pregnant women, people under the age of 14 or people over 60;

3. Beating or injuring others for many times or beating or injuring many people at one time.

Three. Other information

If the minor injury of the left arm muscle is caused by an accident or other force majeure factors, then detention is usually not involved. In addition, if the parties actively cooperate with the investigation and have a good attitude of admitting mistakes, they may also be given a mitigated punishment as appropriate.

To sum up:

Whether the left arm muscle minor injury can be detained needs to be judged according to the specific situation and relevant laws and regulations. Intentional injury that causes injury to others may involve public security administration punishment, and may be subject to administrative detention according to the relevant provisions of the Law of People's Republic of China (PRC) on Public Security Administration Punishment. However, if it is a minor injury caused by an accident or other force majeure factors, detention is usually not involved.