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Evaluation of functional deficits determined by four different hop tests in patients with anterior cruciate ligament deficiency (1998)

Itoh, Hiromitsu ; Kurosaka, M. ; Yoshiya, Shinichi ; [et al.]

Springer

Knee surgery, sports traumatology, arthroscopy 6 (1998), S. 241-245

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ISSN: 1433-7347

Keywords: Key words Anterior cruciate ; ligament ; Knee ; Function ; One leg hop test

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine , Sports Science

Notes: Abstract The purpose of this study was to analyze the validity of the newly designed functional ability test (FAT) for the normal population and patients with deficiency of the anterior cruciate ligament (ACL). The FAT consists of four tests: the figure-of-eight hop, the up-down hop, the side hop, and the single hop. Sixty control subjects and 50 patients with unilateral ACL deficiency were tested. In the control group, the values measured were significantly different between males and females in all of the tests. On the other hand, when left/right difference values were compared, no significant difference was found between males and females in any of the tests. More than 95% of control group exhibited symmetrical function in each part of the FAT, whereas in the ACL-deficient group, the percentage of patients who showed abnormal symmetry was 68% in the figure-of-eight hop, 58% in the up-down hop, 44% in the side hop, and 42% in the single hop. The percentage of ACL-deficient patients with functional asymmetry in at least one of the four tests was 82%. The FAT was found to be useful in evaluating lower limb function in ACL-deficient patients.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/s001670050106

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Augmentation of anterior cruciate ligament reconstruction in dogs with prostheses of different stiffnesses (1986)

Yoshiya, Shinichi ; Andrish, Jack T. ; Manley, Michael T. ; [et al.]

Hoboken, NJ [u.a.] : Wiley-Blackwell

Journal of Orthopaedic Research 4 (1986), S. 475-485

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ISSN: 0736-0266

Keywords: Anterior cruciate ligament ; Reconstruction ; Ligament augmentation device ; Life and Medical Sciences

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Medicine

Notes: The purpose of this study was to investigate the biological and bio-mechanical properties of anterior cruciate ligament (ACL) reconstruction augmented with Dacron prostheses of three different stiffnesses. The ACLs of 36 adult mongrel dogs were removed and the ligament was reconstructed. In 18 dogs, one knee was reconstructed with patellar tendon alone, and the contralateral knee with Dacron augmented patellar tendon. In the remaining 18 dogs, reconstruction was with Dacron augmented patellar tendon with Dacron alone being used for the contralateral control knee. Death was 3 months after surgery, and the reconstructions were examined biologically and biomechanically. The mechanical data were compared with immediate postoperative data obtained from 45 reconstructed fresh cadaveric knees. Tensile testing demonstrated that an increase in failure load was found when the implanted patellar tendon graft was compared with the cadaveric reconstruction. The strength of the Dacron augmented reconstruction showed little change while the Dacron alone graft decreased in strength during the period of implantation. No clear difference was found between the performance of augmentation devices of different stiffnesses. Microangiography showed that grafts were totally revascularized in patellar tendon alone, but not well revascularized in Dacron augmented patellar tendon and Dacron alone reconstruction. The presence of the Dacron appeared to have an adverse effect on revascularization.

Additional Material: 5 Ill.