ChapterⅢ Results
4.2 Clinical Relevance
Although all of the functional tests were considered as moderate tests, more than 50% of the patients in the early ACLR group could not accomplish the step up/over test with 30cm step. Hence, adjustment in this test may be needed in order to apply to the functional assessment in the different phases of ACL injured patients.
On the other hand, the weight bearing/squat, forward lunge and step/quick turn tests showed to be able to detect the difference between the ACL groups and the normal control group. Our results revealed that the functional performance would be changed in the ACLD group especially in weight bearing at slight flexed knee and the turning activity. The declination of functional abilities was the worst in the early ACLR group and gradually recovered to nearly normal in the late ACLR group.
Therefore, these tests on the computerized posturogram system were suitable for the clinicians to evaluate the functional performance in each phase of ACL injured patients.
4.3 Limitation
One limitation of this study is that it is not a longitudinal study because of the limited execution period of this project. The follow-up of our patients will be continued in the future. In current study, there are some other limitations in our subjects selection, such as uneven subject number, and unmatched age and gender in our four subject groups. However, these inequalities would not affect out results a lot since our subjects were all young adults and little different performance would be found between genders. In addition, all the patients of ACLR groups accepted BTB surgical reconstruction, so the results of the current study could no generalize to the hamstring tendon graft population who may have different muscle strength performance.
Chapter Ⅴ Conclusion
The present study investigated the changes in dynamic functional performance tests with computerized dynamic postruogram system in the different phases of ACL injured patient populations. In this study, we used the output parameters provided by the PRO Balance Master® system combined with the advanced analyzed measures from the exported force data to distinguish the different performance between the different phases of ACL injury as well as distinguish from the normal control subjects. The results indicated that the dynamic functional performance tests were sensitive to detect changes of movement strategies following ACL injury and surgical reconstruction. The ACLD subjects would reduce quadriceps contraction in the knee terminal extension. The functional abilities were significantly decreased in the early ACLR subject, and were gradually recovered in the late stage of ACLR close to the normal. Therefore, examing these moderate functional tests using computerized dynamic postruogram system could be a good rehabilitative and evaluative tool.
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