“…Growth spurts can therefore contribute to the stretching of soft tissues, making the child more vulnerable to musculoskeletal overuse injury (Allread, Wilkins, & Marras, ). Children working in agriculture are particularly vulnerable to injury (American Academy of Pediatrics, , Browning, Westneat, Donnelly, & Reed, , Castro & Hunting, , Gerberich et al, , Gilliam, Jones, Field, Kraybill, & Scott, , Pryor, Carruth, & LaCour, , Strueland, Layde, & Lee, ), although many of these injuries often result from falls or use of modern machinery (American Academy of Pediatrics, , Gilliam et al, , Hubler, ). Repetitive mechanical loading consistent with participation in an agricultural economy could also be supported by the degenerative changes observed in the vertebrae (Rogers, Waldron, Dieppe, & Watt, ; van der Merwe, Iscan, & L'Abbè, ), but the relationship between degenerative joint disease and activity is debated (Knüsel, Gögel, & Lucy, ).…”