Yoichi Koike

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Proximal humeral fractures occur frequently. Displaced or unstable fractures require open reduction and internal fixation. Our objective was to investigate the clinical and radiographic results of the internal fixation using Polarus humeral nails for fractures of the proximal humerus. From January 2001 to April 2006, 54 shoulders of 54 patients (44 females,(More)
STUDY DESIGN Immunohistochemical study of the angiogenesis and inflammatory cell invasion in lumbar disc herniation. OBJECTIVES To observe the blood vessel formation within the extracellular matrix in lumbar disc herniation, and to elucidate the role of angiogenesis in the natural shrinking of hernias. SUMMARY OF BACKGROUND DATA There have been few(More)
Cancer metastasis to the skeletal muscle is very rare. In this report, we describe 7 cases (6 males, 1 female, age 55-76, mean 66 y.o.) with unusual presentation of cancer metastasis to the skeletal muscle, illustrating the principal clinical, radiographic and histologic features. The primary tumors were lung cancer in 4 cases (3 adenocarcinomas, 1 squamous(More)
Thickening of the medial ulnar collateral ligament in the throwing arm of adult baseball players is a well-known phenomenon. However, onset of the thickening is unclear among young baseball players. The purpose of this study was to evaluate the thickness of the medial ulnar collateral ligament in junior high and high school baseball players. Seventy-one(More)
BACKGROUND Complex regional pain syndrome (CRPS) is one of the serious complications after surgical treatment of a rotator cuff tear. Both a measurement of body surface temperature and bone scintigraphy have been used as diagnostic tools for the early phase of CRPS.Unfortunately, few studies have been carried out that applied these methods to the patients(More)
BACKGROUND Abnormal skin temperature in the shoulder is caused by various diseases. A thermography is unable to capture temperature changes over time. In contrast, a Thermocron is an effective measuring device to monitor temperature changes over time. PURPOSES The purposes of this study employing a Thermocron were to measure shoulder skin temperature over(More)
BACKGROUND Some patients with rotator cuff tears complain of pain, whereas others are asymptomatic. Previous studies have pointed out the presence of active bone metabolism in the painful shoulder, identified with increased radioisotope uptake during bone scintigraphy. HYPOTHESIS Shoulders with symptomatic rotator cuff tears will demonstrate higher(More)
The purpose of this study was to investigate the association between acromioclavicular (AC) joint pain and superior capsular bulging assessed by ultrasound in adolescent baseball players. One hundred and fifty players (1st–8th graders) were examined. All subjects underwent physical examinations, including assessment of tenderness on the AC joint and(More)
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