Correction of abnormally shaped femurs is occasionally required in cases where abnormal shape of the femur angle the knee cap to luxate most or all the time. (acvs.org)
They can also bend into abnormal shapes, called misfolds. (discovermagazine.com)
This phenomenon did not occur in the mutant plants lacking autophagy machinery, in which damaged chloroplasts showing abnormal shapes accumulated. (sciencedaily.com)