Lesson 6 of 6
Spinal Loads on Fast Bowlers
6 min read•3/19 sections
Why lumbar stress fractures dominate injury lists.
Data: 15–20% of adolescent fast bowlers develop pars stress fractures — the highest injury rate in cricket.
Prevention: Action screening, workload ratios <1.5, stability, no bowling on consecutive days for U19s.
Technical Breakdown
19-section schemaDefinition
Peak lumbar compression at front-foot contact reaches 6–8× body weight; peak side-bend exceeds any other sport.
History
Finger- and wrist-spin have been part of cricket since the 18th century; -arm spin was legalised in 1864, and the ICC's 15° flex tolerance (2005) modernised its regulation.
Biomechanics
Mixed actions (shoulder counter-rotation > 30°) double lumbar stress vs pure or front-on actions.