The young baseball players with knee pain could develop low back pain in the near future, as per recent research undertaken by Yutaka Yabe and colleagues. The significant investigation has been centred on elbow and shoulder injuries among baseball players. But, research regarding knee and lumbar spine injuries among these players is limited. The energy is shifted from the lower body parts using lower back to the upper body during usual motions in the baseball like hitting, running and throwing. Lower back pain along with other lower extremity pain can abrupt the kinematic chain, and therefore essential to know the relationship between lower extremity complaints and LBP.

This cross-sectional study aimed to illustrate the connection between LBP and knee pain using a self-reported questionnaire in the young baseball players of aged 6 to 15 years. Multivariate logistic regression models were used for the investigation by considering body mass index, age, sex, number of hours in practice per day on weekend and weekdays, number of days of training per week, player position, team levels, practice intensity, and frequency of participation in games as variables.

The point prevalence of knee pain and LBP noticed was 13.1% and 8.4%, respectively. LBP showed a significant relationship with knee pain. The adjusted odds ratio for LBP marked was 5.83 in the presence of knee pain, using the nonexistence of knee pain as a reference. The physicians should pay attention to knee complaints to stop and manage LBP among young baseball players.