强直性脊柱炎 (ankylosingspondylitis ,AS)是一种常见关节疾病 ,腰背疼痛是其常见表现 ,甲状旁腺功能亢进症是一种少见疾病 ,而且表现复杂 ,常易误诊 ,因严重的骨质疏松导致驼背畸形、严重腰背疼痛极易被误诊为AS ,我们在临床中遇到 1例 ,现报道如下。患者 :男性 ,5 3岁。因四 Ankylosponsive spondylitis (AS) is a common joint disease, low back pain is a common manifestation, hyperparathyroidism is a rare disease, and the performance of complex, often misdiagnosed, due to severe osteoporosis Cause kyphosis deformity, severe back pain easily misdiagnosed as AS, we encountered in a clinical case, are reported below. Patients: male, 53 years old. Due to four