Magnusson, HI, NEWestlin, FNyqvist, et al. :Abnormally decreased regional bone density in athletes with medial tibial stress syndrome. .Am J Sports Med29::712. ,2001. .1173448210.1177/03635465010290060701)| false
Franklyn, M, BOakes, BField, et al. :Section modulus is the optimum geometric predictor for stress fractures and medial tibial stress syndrome in both male and female athletes. .Am J Sports Med36::1179. ,2008. .
Franklyn, M, BOakes, BField, et al. :Section modulus is the optimum geometric predictor for stress fractures and medial tibial stress syndrome in both male and female athletes. .Am J Sports Med36::1179. ,2008. .10.1177/036354650831440818490475)| false
Bennett, JE, MFReinking, BPluemer, et al. :Factors contributing to the development of medial tibial stress syndrome in high school runners. .J Orthop Sports Phys Ther31::504. ,2001. .10.2519/jospt.2001.31.9.50411570734)| false
Redmond, AC, JCrosbie, and RAOuvrier. :Development and validation of a novel rating system for scoring standing foot posture: the Foot Posture Index. .Clin Biomech (Bristol, Avon)21::89. ,2006. .10.1016/j.clinbiomech.2005.08.002)| false
Matsas, A, NTaylor, and HMcBurney. :Knee joint kinematics from familiarised treadmill walking can be generalised to overground walking in young unimpaired subjects. .Gait Posture11::46. ,2000. .1066448510.1016/S0966-6362(99)00048-X)| false
Rathleff, MS, RGNielsen, OSimonsen, et al. :Perspectives for clinical measures of dynamic foot function-reference data and methodological considerations. .Gait Posture31::191. ,2010. .1989685110.1016/j.gaitpost.2009.10.004)| false
Hargrove, R and CMaclean. :Incidence and risk factors in the development of medial tibial stress syndrome among naval recruits. .Am J Sports Med33::463. ,2005. .10.1177/03635465050330031915716265)| false
Klein, P, SMattys, and MRooze. :Moment arm length variations of selected muscles acting on talocrural and subtalar joints during movement: an in vitro study. .J Biomech29::21. ,1996. .10.1016/0021-9290(95)00025-9)| false
Pohl, MB and JGBuckley. :Changes in foot and shank coupling due to alterations in foot strike pattern during running. .Clin Biomech (Bristol, Avon)23::334. ,2008. .10.1016/j.clinbiomech.2007.09.016)| false
Nielsen, RG, MSRathleff, OHSimonsen, et al. :Determination of normal values for navicular drop during walking: a new model correcting for foot length and gender. .J Foot Ankle Res2::12. ,2009. .1942269610.1186/1757-1146-2-12)| false
Medial tibial stress syndrome (MTSS) is a common diagnosis. Several studies have demonstrated that excessive static navicular drop (ND) is related to the diagnosis. However, no studies have yet investigated ND and the velocity of ND during dynamic conditions. The aim of this study was to evaluate ND characteristics in patients with MTSS in dynamic and static conditions.
In a case-control study, 14 patients diagnosed as having MTSS were included from an orthopedic outpatient clinic. A control group consisting of 14 healthy participants was matched regarding age, sex, and typical sporting activity. Navicular drop was evaluated during treadmill walking by a two-dimensional video analysis. Static foot posture, static ND, dynamic ND (dND), and velocity of dND were compared.
The two groups were comparable in relation to age, sex, height, weight, and foot size. No significant difference was found in static foot posture. Static ND showed a mean difference of 1.7 mm between the groups (P = .08). During treadmill walking, patients with MTSS had, on average, a 1.5-mm-larger dND (P =.004) and a 2.4-mm/sec-larger mean velocity of dND (P = .03).
Patients with MTSS display a larger ND and a higher ND velocity during treadmill walking. Increased ND velocity may be important to this condition. Future studies should include velocity of dND to investigate the mechanisms of dND in relation to overuse injuries. (J Am Podiatr Med Assoc 102(3): 205–212, 2012)
Corresponding author: Michael S. Rathleff, BSc, PT, Orthopaedic Surgery Research Unit, Aarhus University Hospital–Aalborg Hospital, 15 Soendre Skovvej, DK-9000 Aalborg, Denmark. (E-mail: firstname.lastname@example.org)