background: about 70% of all pregnant women suffer from pelvic girdle pain (pgp)and/or low and high back pain(lbp,hbp). the risk factors for developing pelvic girdle pain and back pain in general are history of previous low back pain or pelvic or pain in previous pregnancy. in order to study the relative frequency of different kinds of backache in pregnancy and possible risk factors for develop...

Psychologically and physically straining work conditions increase the risk of low back pain (LBP) development. According to recent recovery theories, leisure time recovery can counteract the negative influences of work stress on health. Similarly, a recent empirical work has indicated a moderating role of recovery on the link between stress and health issues. In this paper, a theoretical model ...

Stabilization exercise program has become the most popular treatment method in spinal rehabilitation since it has shown its effectiveness in some aspects related to pain and disability. However, some studies have reported that specific exercise program reduces pain and disability in chronic but not in acute low back pain, although it can be helpful in the treatment of acute low back pain by red...

Ridges in the state space distribution of finite-time Lyapunov exponents can be used to locate dynamical boundaries. We describe a method for obtaining dynamical boundaries using only trajectories reconstructed from time series, expanding on the current approach which requires a vector field in the phase space. We analyze problems in musculoskeletal biomechanics, considered as exemplars of a cl...

Received: 29 Jun. 2015 Accepted: 24 Oct. 2015

OBJECTIVE To examine the effects of different timing of structured interventions for workers on sick leave due to low back pain on return to work (RTW), and the consequences for costs and benefits. METHODS Literature reviews were conducted to identify RTW curves and to estimate treatment effects, costs and benefits of structured interventions among workers on sick leave due to low back pain. ...

OBJECTIVE To evaluate the reliability and validity of the improved version of the Patient Generated Index (PGI) in patients with low back pain. METHODS The PGI was administered to 90 patients attending care in 1 of 6 institutions in Norway and evaluated for reliability and validity. The questionnaire was given out to 61 patients for re-test purposes. RESULTS The PGI was completed correctly ...

Osseous bridging between lumbar transverse processes is an uncommon condition that may cause low back pain. In most cases, its etiology is alleged to be trauma to the back and only rarely has a congenital origin been indicated. Furthermore, most reported cases involved adults, the majority of whom were middle-aged. Here, the authors describe the case of the youngest girl reported to date with c...