A pain that feels like a tendon in your left hip can be related to hip trauma, herniated discs, and gluteal contracture. Traumatic hip injuries can cause damage to the hip muscles and soft tissues, and left hip pain can occur when the muscle fibers are pulled when walking. Herniated lumbar discs, spinal stenosis and other compression of the nerves innervating the left gluteal region can also cause abnormal nerve function and left gluteal pain. If you have been doing gluteal intramuscular injections for a long period of time, it may cause gluteal muscle contracture, and you may also experience pain like having a tendon when squatting. If the symptom of pain like a tendon in the left buttock occurs, it is recommended that the patient go to the hospital for medical examination to clarify the cause of the disease and receive regular treatment.