The needle entry points of the lower row are straight punctures that penetrate the muscle attachments along the medial superior margin of the posterior superior iliac spine, the medial margin of the sacroiliac joint, and a portion of the lateral iliac crest of the lumbar triangle. The entry point of the upper row of needles was made oblique, and then small lifting insertion, respectively, reached and penetrated the anterior border muscle attachments. Then subperiosteal stabbing along the bone surface was used to penetrate 1.5cm forward and downward, and the needle was retained for 15min. The needle was left in place for 15 min, and for the second puncture, the entry point was chosen to be in the middle of the two longitudinal entry points of the first puncture. The rest of the operation was unchanged. Repeat the above operation for the last 3 treatments. The treatment is performed twice a week for a total of 5 treatments.

The points were selected with reference to the 2006 National Standard of the People's Republic of China (GB/T 12346-2006), "Acupoint Names and Localization". The patients were placed in the prone position, the acupoints were sterilized with 75% alcohol, and the needles were inserted vertically with the conventional needling method, to the extent that there was a sensation of acidity, numbness, heaviness, distension, or radiating to the surroundings, and the needles were left in place for 15 min. The treatments were carried out twice a week for a total of five treatments.

The needles are inserted into the subject in a certain way to stimulate specific parts of the body to treat the disease.

It was evaluated according to the efficacy standard of lumbar muscle strain injury in the Guidelines for Clinical Research of New Chinese Medicines, and the JOA index was used as the benchmark:

Efficacy index (N) = [(pre-treatment score - post-treatment score) ÷ pre-treatment score] × 100%

• cure: the patient does not feel obvious back pain and other discomforts, N ≥ 90%

  • Effective: Effective: low back pain is significantly relieved, 60% ≤ N < 90% ③ Effective: lower back pain is relieved, 30%≤N<60%. ④ Ineffective: the patient's low back pain is not relieved, N<30%. Total effective rate (%) = [(number of cured + number of effective + number of effective) ÷ number of cases in each group] × 100%.

The visual analogue scale (VAS) is used for pain assessment. The basic method is to use a traveling scale of about 10 cm in length, with 10 scales on one side and "0" and "10" scores at each end, with 0 indicating no pain and 10 representing the most severe pain that is intolerable.