Penny L Head1, Richard Kasser2, Susan Appling3, Thomas Cappaert4, Kunal Singhal2, Audrey Zucker-Levin5. 1. University of Tennessee Health Science Center, 930 Madison Avenue, Suite 604, Memphis, TN, 38163, USA. Electronic address: phead2@uthsc.edu. 2. University of Tennessee Health Science Center, 930 Madison Avenue, Suite 604, Memphis, TN, 38163, USA. 3. Ohio State University, 516 Atwell Hall, 453 W, 10th Avenue, Columbus, OH, 43210, USA. 4. Rocky Mountain University of Health Professions, 122 East 1700 South, Bldg. 3, Provo, UT 84606, USA. 5. University of Saskatchewan, 104 Clinic Place, Health Sciences E-Wing, Saskatoon, SK, S7N 2Z4, Canada.
Abstract
OBJECTIVE: Examine dynamic stability using Dynamic Postural Stability Index (DPSI) in athletes following anterior cruciate ligament reconstruction (ACLR) at time of release for return-to-sport (RTS), compared to matched controls. DESIGN: Cross-sectional case-control study. SETTING: Sports medicine clinic. SUBJECTS: Fifteen ACLR athletes who had completed post-operative rehabilitation and were within 6 weeks following release to RTS were age-, gender-, and activity-matched to 15 healthy controls. MAIN OUTCOME MEASURES: Ground reaction forces (GRFs) were collected using a portable force plate during stabilization from three different single-leg landing tasks. A composite DPSI was calculated using GRFs. RESULTS: Compared to matched controls, ACLR athletes within 6 weeks of release for RTS did not significantly differ in dynamic postural stability and there were no significant differences between the involved and uninvolved limbs in the ACLR group. CONCLUSION: Current findings indicate that dynamic postural stability, as measured using the DPSI, is not significantly different in ACLR subjects at time of release for RTS compared to matched controls. In addition, the DPSI was not significantly different between the involved and uninvolved limbs in the ACLR subjects. The results suggest that the post-ACLR rehabilitation program utilized may have adequately restored postural stability in this particular sample.
OBJECTIVE: Examine dynamic stability using Dynamic Postural Stability Index (DPSI) in athletes following anterior cruciate ligament reconstruction (ACLR) at time of release for return-to-sport (RTS), compared to matched controls. DESIGN: Cross-sectional case-control study. SETTING: Sports medicine clinic. SUBJECTS: Fifteen ACLR athletes who had completed post-operative rehabilitation and were within 6 weeks following release to RTS were age-, gender-, and activity-matched to 15 healthy controls. MAIN OUTCOME MEASURES: Ground reaction forces (GRFs) were collected using a portable force plate during stabilization from three different single-leg landing tasks. A composite DPSI was calculated using GRFs. RESULTS: Compared to matched controls, ACLR athletes within 6 weeks of release for RTS did not significantly differ in dynamic postural stability and there were no significant differences between the involved and uninvolved limbs in the ACLR group. CONCLUSION: Current findings indicate that dynamic postural stability, as measured using the DPSI, is not significantly different in ACLR subjects at time of release for RTS compared to matched controls. In addition, the DPSI was not significantly different between the involved and uninvolved limbs in the ACLR subjects. The results suggest that the post-ACLR rehabilitation program utilized may have adequately restored postural stability in this particular sample.