Correspondence to: M J Callaghan Centre for Rehabilitation Science, University of Manchester, Manchester Royal Infirmary, Oxford Road, Manchester M13 9WL, UK; michael.callaghanman.ac.uk Background: ...

Correspondence to Lachlan Giles, School of Allied Health, La Trobe University, Bundoora, Victoria 3086, Australia; L.Giles{at}latrobe.edu.au Background Quadriceps strengthening exercises are part of ...

Clinical and functional results were statistically examined with relation to age, timing of surgery, length of follow-up, quadriceps atrophy, extensor lag, patella position, and time to full duty.