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Background  In 2011 a consensus statement from the British Association of Paediatric Urologists recommended lowering the age at orchidopexy to under 1 year. There are concerns that a younger age at operation may increase postoperative testicular atrophy. The ORCHESTRA study aimed to establish the current age at orchidopexy in a multicentre, international audit and to see whether testicular atrophy was affected by age at operation.    Methods  The study was undertaken over a 3-month period in 28 centres in boys undergoing orchidopexy for unilateral, palpable undescended testes. Data collection was done using a standardized, predetermined protocol. The primary outcome was postoperative testicular atrophy. Secondary outcomes were wound infections, reoperations, and unplanned hospital stays related to anaesthetic events.    Results  A total of 417 patients were included, of whom only 48 (11.5 per cent) underwent orchidopexy before 1 year of age. There was no difference in anaesthetic complications in boys aged less than 1 year  versus  older patients: 0 of 48 (0 per cent)  versus  6 of 369 (1.6 per cent) ( P  = 0.999). Complete follow-up was available for 331 patients (79.4 per cent). There was no difference in atrophy rate between those aged less than 1 year and older boys: 1 of 37 (3 per cent)  versus  9 of 294 (3.1 per cent) ( P  = 0.999). Reoperation rates were 0 of 37 (0 per cent) and 7 of 294 (2.4 per cent) respectively ( P  = 1.000). There were more wound infections in boys under 1 year of age: 4 of 37 (11 per cent)  versus  7 of 294 (2.4 per cent) ( P  = 0.025).    Conclusion  Only 11.5 per cent of boys underwent surgery before the age of 1 year. There was no increased risk of postoperative testicular atrophy with early surgery, although there was a higher rate of wound infection. Further study is required to demonstrate that early orchidopexy is not inferior to orchidopexy undertaken in boys aged over 1 year.

Timing of orchidopexy and its relationship to postoperative testicular atrophy: results from the ORCHESTRA study