[Purpose] We tested the reliability and validity of the Japanese version of the Short
Questionnaire to Assess Health-enhancing Physical Activity scale in asymptomatic older
adults and sought to confirm discriminator validity in women with osteoarthritis.
[Subjects] The participants included an asymptomatic comparison group (men and women) and
women with knee or hip osteoarthritis. [Methods] The test-retest method was used to assess
reliability. The International Physical Activity Questionnaire was chosen to assess
criterion-related validity. Discriminator validity was assessed by comparing the
asymptomatic and osteoarthritis groups. [Results] Mean age for the asymptomatic groups was
63 ± 6 years for men (n = 23) and 61 ± 7 years for women (n = 51), and it was 63 ± 9 years
for the osteoarthritis group (n = 32). The total score and scores for all items, except
for heavy housework items, were significantly correlated with the retest.
Criterion-related validity showed significantly weak to moderate correlations between the
respective scale categories. For discriminator validity, the total scores and scores for
bicycle commuting, light housework, and three leisure items differed significantly between
the asymptomatic and osteoarthritis groups. [Conclusion] The Short Questionnaire to Assess
Health-enhancing Physical Activity scale is a reliable and valid measure in asymptomatic
older adults, and can discriminate between osteoarthritic and asymptomatic women.
Recently, a remnant-preserving anterior cruciate ligament (ACL) reconstruction technique has been developed. However, the preoperative condition of remnant ACL is occasionally difficult to evaluate by magnetic resonance imaging. The purpose of this study is to evaluate the accuracy of pre-operative visualization of remnant ACL using three-dimensional computed tomography (3D-CT). The remnant ACL in 25 patients was examined by 3DCT before ACL reconstruction surgery. Findings on 3D-CT images and arthroscopy were compared. The 3D-CT images were classified into 4 groups: Group A, remnant fibers attached to the posterior cruciate ligament (PCL); Group B, those located between the PCL and the lateral wall; Group C, those attached to the lateral wall; and Group D, no identifiable remnant fibers on the tibial side. These groups were made up of 4, 3, 9 and 9 patients, respectively. Findings on 3D-CT images were identical to those during arthroscopy in 20 of 25 cases (80%). Remnant ACL can be accurately evaluated using 3D-CT in 80% of cases of torn ACL. This novel method is a useful technique for pre-operative assessment of remnant ACL.
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