肩腱板断裂例に伴う上腕骨内嚢腫様変化の要因について

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The purpose of this study was to refer to the clinical characteristics and etiology of the cystic changes in the humeral head in patients with a rotator cuff tear. One hundred four patients who underwent surgery for the rotator cuff tear were divided into two groups depending on whether they had a cyst in the humeral head or not. Twenty-three patients had cysts in the humeral head (the cyst group) and eighty-one did not (the non-cyst group). Preoperative radiographs, JOA scores, and clinical findings as well as the size of the tear were compared between the two groups to reveal the clinical characteristics and factors, which might relate to cyst formation. There was no significant difference between the cyst and non-cyst group in age of the patients at surgery, gender, affected side, causative mechanism (traumatic or degenerative) of the cuff tear, and duration of symptoms prior to surgery. No significant differences were seen in the incidence of arthritic changes on radiographs between the two groups. The pain score in the preoperative JOA scores was significantly higher in the cyst group than that in the non-cyst group (p<0.05), although there was no significant difference between the two groups in the function, active forward flexion, muscle strength and total score of the preoperative JOA scores. There was no significant difference in the positive rate in Neer or Hawkinss impingement test or that in the full or empty can test between the two groups. The size of the rotator cuff tear was significantly smaller in the cyst group than that in the non-cyst group (p<0.05). Trauma, impingement, and arthritic changes did not appeared to relate to the cystic change in the humeral head in patients with a rotator cuff tear.
日本肩関節学会の論文

肩腱板断裂例に伴う上腕骨内嚢腫様変化の要因について

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