Posterior cruciate ligament reconstruction 16 days produces local muscle throbbing may be related to local inflammation, poor blood circulation, nerve dysfunction and so on. According to the specific reasons, you need to choose the conditioning program under the guidance of professional doctors or rehabilitation teachers, and follow the doctor’s instructions to use medication or rehabilitation training. 1. Local inflammation: 16 days after the reconstruction of the posterior cruciate ligament, if local aseptic inflammation occurs, it is usually easy to stimulate the surrounding tissues to produce a throbbing performance. It can be treated with non-steroidal anti-inflammatory drugs, such as celecoxib or meloxicam. 2. Poor blood circulation: 16 days after the posterior cruciate ligament reconstruction, if there is a local blood circulation problem, it is easy to trigger the performance of beating. Magnetic heat therapy or hot compresses can be chosen for treatment. 3. Muscle spasm: if muscle spasm occurs after posterior cruciate ligament reconstruction due to excessive training intensity, it may be manifested as the symptom of muscle throbbing. It can be relieved by rest and hot compresses. After posterior cruciate ligament reconstruction, early attention should be paid to braking and resting mainly, and in the later stage, it is necessary to carry out motor function exercise gradually to prevent the sequelae of dysfunction. All of the above drugs should be taken under the guidance of a doctor, not blindly self-medication.