Spondylolisthesis is a condition that occurs when bones within the spinal column--called vertebrae--abnormally slip forward over another vertebra. This degenerative spinal condition is graded based upon the number of vertebrae that slip out of place. Grade I spondylolisthesis, the least severe form of this condition, is diagnosed when less than 25 percent of the vertebrae along the spinal column slip out of place. Symptoms associated with grade I spondylolisthesis symptoms mimic other grades of this condition but are typically less severe.
No Initial Symptoms
In certain patients, grade I spondylolisthesis does not cause noticeable symptoms. If grade I spondylolisthesis is detected, affected patients can rectify vertebrae slippage issues without surgical intervention. In the absence of treatment, grade I spondylolisthesis can progress to more severe grades of this disease, such as grade III or grade IV, which typically require surgical treatment.
Back Pain
Symptomatic patients most commonly experience back pain as a symptom of grade I spondylolisthesis. Back pain symptoms can be uncomfortable and typically arise within the lower region of the back. Sensations of pain due to grade I spondylolisthesis may be most severe after exercise or prolonged periods of physical activity. Persistent back pain symptoms can negatively affect a patient's ability to move about normally. Patients who experience back pain symptoms should receive further evaluation from a doctor as these symptoms can also be signs of alternate medical complications.
Leg Pain or Weakness
Sporadic leg pain can arise as a symptom of grade I spondylolisthesis in certain patients. Sensations of pain within the lower back can radiate into the buttocks, upper legs or calf muscles. Certain patients can also experience unusual sensations of muscle twitching, tightness or weakness within the legs. Additionally, this condition may result in tingling or numbness within the foot. These symptoms can affect a patient's gait and may cause them to limp. Without treatment, these grade I spondylolisthesis symptoms can progressively become worse.
