SMOOTHNESS ANALYSIS OF THE KNEE DURING VOLUNTARY MOVEMENT IN PATIENTS WITH ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION: APPLICATON OF JERK INDEX
Motonaga Kojima, Shuichi Obuchi, Yoshitaka Shiba (Kitasato University, Sagamihara, Japan)
In these years, the reconstruction of the anterior cruciate ligament (ACL) by using the autogenous bone-patellar ligament-bone allograft (BTB) become popular. However, there were few reports concerning the joint integrity after operation. The purpose of this study was to assess smoothness of the knee after the ACL reconstruction.
Ten patients who had undergone the ACL reconstruction (an average of 286.4 days after operation) were evaluated for their smoothness of the knee during voluntary bending from full extended position with jerk index. A three dimensional analysis system (OPTOTRACK, Canada) was used to collect kinematic data and to obtain jerk index during knee bending.
The motion of the affected knees showed significantly greater jerk index than the motion of the unaffected knees (p<.01), although jerk index greatly changed person by person. We concluded that patients with ACL reconstruction using BTB have insufficiency of smoothness in the affected knee joint.
THE CLINICAL AND ELECTROPHYSIOLOGICAL STUDY OF THE SUPRASCAPULAR NERVE PALSY
Jeong-Su Leem, Min Kyun Sohn (Chungnam National University, Taejon, Korea)
Twenty-one patients with suprascapular nerve palsy were reviewed retrospectively by clinical charts and electrodiagnostic records. Isolated suprascapular nerve lesion were developed in nine patients, and twelve patients were accompanied by axillary nerve lesion. In patients with combined nerve involvement, the lesion was developed by trauma in all cases and more severly involved than those of isolated lesions. In three cases isolated suprascapular nerve lesion was developed spontaneously. Isolated infraspinatus muscle was involved in four cases due to compression of suprascapular nerve at the spinoglenoid notch, and ganglionic cyst was found in one case by ultrasonography. At initial examination, three patients showed complete and eighteen patients showed incomplete lesion. Eight patients with incomplete lesion and one patient with complete lesion were followed from 1 to 7 months after injury. Seven patients with incomplete lesion showed regeneration. Therefore electrodiagnostic study is necessary to evaluate severity and level of nerve lesion and regeneration.