You are evaluating a 74-year-old patient for chronic low bac…
You are evaluating a 74-year-old patient for chronic low back pain and bilateral leg pain (right > left) that is worse with walking. As part of a thorough, broad to narrow examination you perform history, systems review, and tests and measures. In systems review, you identify a directional preference for flexion as the patient notes an improvement in leg pain with repeated lumbar flexion. The patient has a positive slump and SLR bilaterally. When you get to special tests at the end of your exam, you select to perform prone instability test, thigh thrust test, and Well’s straight leg raise test. Prone instability is positive, Well’s SLR is negative, and thigh thrust is negative. Based on the above information, the MOST likely diagnosis is: