1. Operative trauma alone, such as merely drilling across the epiphyseal line at the tibial tubercle, may fail to cause closure thereof in half or more of the cases.
2. Statistics show that operative procedure of a similar nature is [SEE Fig 3-A ,3-B, 3-C, 3-D AND 3-E IN SOURCE PDF] [SEE FIG 4-A, 4-B, 4-C, 4-D, AND 4-E IN PDF SOURCE] [SEE FIG 5-A, 5-B, 5-C, 5-D, 5-E IN PDF SOURCE] [SEE FIG 6-A, 6-B, 6-C, 6-D IN PDF SOURCE] not new, that the results are good, and that, in cases of long standing, operative interference is a logical procedure.