Thirty cases of peripheral nerve injury were selected and analysed by means of electromyographic studies at Severance Hospital, Yonsei University, from January 1972 to August 1972. 1. The sex ratio was 17:13 (male: female). The peak incidence occurred in the twenty to thirty year age group. Involved side: right side 18 cases: left side 12 cases. 2. Nerve involved: peroneal nerve (15 cases), tibial nerve (2 cases), median nerve (7 cases), ulnar nerve (4 cases) and radial nerve (2 case). 3. Mode of nerve injuries 1) Peroneal nerve: Nerve compression, variable (10 cases) Tibia & fibular fracture complication (4 cases) Stab wound, fibular neck region (1 case) 2) Tibial nerve: Injection neuritis, buttock (2 cases) 3) Median nerve: Cut glass laceration, wrist region (3 cases) Carpal tunnel syndrome (3 cases) Undetermined mode (1 case) 4) Ulnar nerve: Cut glass laceration, wrst region (2 cases) Forearm bones fracture complication (1 case) Supracondylar fracture (cubitus valgus) (1 case) 5) Radial nerve: Cut glass laceration, wrist region (1 case) Crushing injury, elbow region (1 case) 4. Among the 15 cases of peroneal nerve injury, there were 10 cases of partial denervation and 5 cases of complete denervation. 5. The mode of injury in 10 cases of partial denervation was nerve compression from the following causes: lithotomy posture during forceps delivery (1 case), external rotation of legs during recovery state after surgery (3 cases), abnormal posture during coma state after CO intoxication (2 cases), tight long leg cast (3 cases), and direct trauma while descending stairs (1 case). 6. In all 10 cases of partial denervation of the peroneal nerve, decreased motor nerve conduction velocities, diminished amplitude and prolonged latencies were observed. 7. In partial denervation of the peroneal nerve, the earliest that reinnervation was observed was within 3 weeks in 3 out of 10 cases. 8. Spontaneous fibrillation was observed 3weeks after injury in all cases except one in which it was observed only 7 days after peroneal nerve injury. 9, The earliest appearance of positive sharp waves among all peroneal nerve injuries was observed 2 weeks after injury. 10. The initial appearance of nascent potentials (polyphasic potentials) in peroneal nerve injuries was observed 3 weeks after injury (1 case), 5 weeks after injury (1 case), and 5 months after injury (1 case). They are all partial denervation cases due to nerve compression. 11. Ten cases of partial denervation of the peroneal nerve were treated with electrical stimulation and drop foot board with good recovery. Five cases of complete denervation of the peroneal nerve were treated with neurorrhaphy (1 case) and short leg bracing (4 cases). 12. The initial appearance, of polyphasic potentials was observed 5 months after injury in one case out of 3 cases of median nerve injury. 13. Three cases of median nerve injury were classified as carpal tunnel syndrome and occurred in women only. Observations included absence of sensory nerve action potentials below the lesion, delayed distal latency at wrist and normal motor nerve conduction velocity. They were treated by division of the deep transverse carpal ligament with good result. 14. The initial appearance of nascent potentials was observed 7 months after injury in one case among 3 cases of ulnar nerve injury. 15. In two cases each of radial and tibial nerve injury, no reinnervation pattern was observed until the six month follow-up study after injury. At that time no muscle contraction could be seen or palpated clinically. 16. We observed normal motor unit potentials in the muscles in the follow-up studies even though muscle contraction could not be seen or palpated clinically. 17. Electromyographic examination at selected intervals made accurate diagnosis and prognosis possible and aided in evaluating the course of nerve regeneration, which permictted the choice of appropriate treatment.
Action Potentials ; Braces ; Buttocks ; Carpal Tunnel Syndrome ; Coma ; Denervation ; Diagnosis ; Elbow ; Electric Stimulation ; Extremities ; Female ; Follow-Up Studies ; Foot ; Forearm ; Glass ; Humans ; Incidence ; Lacerations ; Leg ; Ligaments ; Median Nerve ; Muscle Contraction ; Muscles ; Neck ; Nerve Regeneration ; Neural Conduction ; Neuritis ; Peripheral Nerve Injuries ; Peripheral Nerves ; Peroneal Nerve ; Posture ; Prognosis ; Radial Nerve ; Sex Ratio ; Surgical Instruments ; Tibia ; Tibial Nerve ; Ulnar Nerve ; Wounds, Stab ; Wrist

For many years permanent soft denture liners has been widely used in dental practice directly or indirectly because of its function in absorbing and distributing the impact force. However, it reveals problems such as lack of permanency and decreased bond strength in long term use. The purpose of this study is to measure the bond strength and failure between denture base resin and several permanent liners. Lucitone 199 was used as denture base resin with soft acrylic liners (Triad, Tokuso Rebase) and silicone elastomers (Tokuyama, Ufi Gel C) bonded to measure the tensile strength before and after thermocycling. The thermocycling was done in 2000 cycles at 5degrees C, 26degrees C and 55degrees C and the measured tensile strength values before and after thermocycling were compared. The mode of failure was investigated in the separated specimens. The results are as follows. 1. As to tensile strength, the strongest material is Tokuso Rebase followed by Triad, Tokuyama, Ufi Gel C in before thermocycling and the order of Triad, Tokuso Rebase, Tokuyama, Ufi Gel C in after thermocycling state. There was significant difference between the values of Triad, Tokuso Rebase and Tokuyama, Ufi Gel C(p<0.05). 2. As to degree of displacement, Ufi Gel C showed most displacement with or without thermocycling treatment and also the difference was significant with the other materials(p<0.05). 3. As to comparisons before and after thermocycling, Tokuso Rebase and Tokuyama showed significant difference in bond strength, whereas Triad and Tokuso Rebase showed significant difference in the degree of displacement(p<0.05). 4. In debonded specimens, Triad and Ufi Gel C showed adhesion failure and Tokuyama showed cohesion failure. Both failures were observed in Tokuso Rebase with adhesion failure up to 70%. The results of this study showed that degree of bond strength between permanent soft denture liner and denture base resin were variable. There was a significant difference between soft acrylics and silicone elastomers with regard to bond strength. Further research in improving bond strength of widely used silicone elastomers and in developing the method of measuring bond strength between denture base resin and the lining materials is needed.
Denture Bases* ; Denture Liners* ; Dentures* ; Silicone Elastomers ; Tensile Strength

No abstract available.
Humans*

Proximal femoral focal deficiency (PFFD) in early infancy is characteristic by quite shortening of the tight segment, flexed, abducted and externally rotated position In assciation with a stable hip which Is freely mobile. Authors experienced a case with the congenital deficiency of the femoral head. The case showed the normal femoral segment and no any other bony anomalies which cannot be Included in Aitkens or Amstutz's classification.
Classification ; Head ; Hip

It is essential to define the accurate location and extent of bony bridge in relation to the epiphyseal plate for operation of partial epiphyseal plate closure by bony bridge resection. Since magnetic resonance imaging(MRI) provides excellent tissue contrast and multiplaner image, it could be applied to the diagnosis and mapping of bony bridge of epiphyseal plate. A thirteen year old female with post-traumatic epiphyseal injury of ankle was diagnosed by MRI. We could assess the bony bridge accurately by direct sagittal and coronal images and excellent tissue contrast of MRI.
Ankle ; Diagnosis ; Female ; Growth Plate ; Humans ; Magnetic Resonance Imaging

The Palmaris longus tendon is important not because of its function but because of its usefulness as a donor tendon. Variations in the palmaris longus muscle ar elfrequent and the most common variation of the muscle is its absence. The incidence of absence of this muscle varies in different racial groups. Reinmann and his coworkers found the palmaris longus muscle absent in 12.9% of in their 1,600 limbs surgery. We have experiened 307 cases of palmaris longus graft surgery and found that there were 4 cases of absence of the palmaris longus tendon. We examined 2,000 limbs of Korean to see the presence of the palmaris longus muscle. Among 1,000 persons, the muscle was absent bilaterally in 11 persons(1.1%). It was absent unilaterally in 32 persons(3.2%). The probability that the muscle is absent in any single limb is 2.7%. There was no significant differences in the incidence of absence by sex or right and left side.
Extremities ; Humans ; Incidence ; Tendons ; Tissue Donors ; Transplants

No abstract available.

An anatomical reduction and maintainance of articular fracture is on of the basic principles In Orthopedic Surgery if good function is to ensue, especially in a major welght bearing joint such as hip knee ankle. In displaced articular fractures, excellent results can be achieved mainly by an open anatomical reduction and firm internal fixation. We performed an open reduction and internal flxation with plates and screws in a patient with the severely comminuted acetabular fracture, and a satisfactory result is obtained.
Acetabulum ; Ankle ; Hip ; Humans ; Joints ; Knee ; Orthopedics

The methods of reconstruction for chronic Iigamentous instability of the knee have changed much since the concept of rotary instability was introduced by Slocum and Larson in 1968. The first step to successful management of these probrams is the accurate dlagnosis of the type or types of the instability that exist. Appropriate operative procedures should then be selected according to the type and degree of the instability as well as the age, general conditlon and the function demand of the patient. The stability can be restored passively by a near anatomical. repair of the injured ligaments, and can be reinforced actively by a proper muscle or tendon transplantation, such as the five-one procedure for anteromedial rotary instability. Nineteen knees of active, well motivated patients were operated on for chronic knee instabilities according to these new concepts. Although the follow-up period was relatively short, the results of the procedures was generally satisfactory.
Follow-Up Studies ; Humans ; Knee ; Ligaments ; Surgical Procedures, Operative ; Tendons

BACKGROUND: Various molecular methods such as polymerase chain reaction (PCR) and DNA hybridization have been introduced to diagnose the hepatitis B more accurately. Recently, Hybrid Capture Assay (HCA) was developed, which uses the signal amplification solution hybridization capture assay with chemiluminescent detector. So we evaluated the sensitivity and clinical utility of the HCA and PCRs for the detection of hepatitis B virus DNA (HBV DNA) and compared these results with serologic markers. METHODS: We analysed the 50 samples from the hepatitis B patients using enzyme immunoassay, HCA and nested PCRs with two different primer sets. The primers of PCR I and PCR II were targeted to pol and core region respectively. RESULTS: In 18 cases, HBV DNA were detected by HCA in which the positive rates by PCR I and PCR II were 55.6%, and 88.9%, respectively. And in 32 cases in which HBV DNA by HCA was negative, the positive rates by PCR I and PCR II were 6.2% and 31.3%, respectively. In 44 cases which were positive for HBsAg, the positive rates for HBV DNA were 38.6% by HCA, 27.3% by PCR I, and 56.8% by PCR II. In cases positive for HBeAg, the positive rates were 93.3% by HCA, 60.0% by PCR I and 80.0% by PCR II. In cases positive for anti-HBe and negative for HBeAg, the positive rates were 10.3% by HCA, 10.3% by PCR I, and 44.8% by PCR II. CONCLUSIONS: Both HCA and PCR compensated each other yet as to the accurate investigation of the viral replication in patients with hepatitis B and the sensitivity was better in HBV PCR with primers to core region than to pol region.
DNA ; Hepatitis B e Antigens ; Hepatitis B Surface Antigens ; Hepatitis B virus* ; Hepatitis B* ; Hepatitis* ; Humans ; Immunoenzyme Techniques ; Polymerase Chain Reaction*