The Grizzlies said further testing showed Morant, who was bumped in the air by a Lakers player while attempting to catch a lob in the third quarter, suffered an extreme right hip flexion.

Flexion bias is another type of bias that can occur with back ... "Scientific Diagnosis or Unproved Label for Back Pain Patients. Lumbar Segmental Instability." Szpalski M, Gunzburg R, Pope MH eds.