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. 1977 May;59(2):241-2.
doi: 10.1302/0301-620X.59B2.873986.

A new method of measuring patellar height

J S Blackburne, T E Peel

A new method of measuring patellar height

J S Blackburne et al. J Bone Joint Surg Br. 1977 May.

Abstract

To measure the patellar height the ratio of the articular length of the patella to the height of the lower pole of the articular cartilage above the tibial plateau is measured on a lateral radiography of the knee, flexed beyond 30 degrees. Normal values lie between 0-54 and 1-06. The subluxing patella is at the upper end of the normal range, but, in chondromalacia, the male patellae were lower than average, but the female patellae were normal.

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