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桡骨和尺骨
学习目标
完成本学习单元后，你将学会：
- 熟悉桡骨和尺骨的主要骨性标志。
- 列举连接桡骨与尺骨的主要韧带。
观看视频
桡骨和尺骨是前臂的两块骨骼，其近端在肘部与肱骨连结，远端在腕部与腕骨连结。在解剖学姿势中，桡骨位于前臂外侧，而尺骨位于内侧。
桡骨与尺骨在近端和远端都形成桡尺关节，而它们的骨体通过骨间膜相连。两个桡尺关节使桡骨能够绕尺骨活动，从而使前臂可以旋后使掌朝上，或旋前使掌朝下。
观看以下视频并浏览图谱，学习这两块骨骼的主要特征。
进行测验
现在你已经观看了关于桡骨和尺骨的视频，请进行以下测验来巩固知识。
你也可以挑战自己，定制专属的肘部和前臂解剖测验。
下载以下PDF文件，学习桡骨和尺骨的解剖标志。
浏览图谱
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骨骼
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:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/collum-radii/OOOLa0f7X90kJwEGzeXXA_efGpjBBiw5_Collum_radii_1.png "桡骨颈 (Neck of radius)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/articular-circumference-of-head-of-radius/h0h3AFyCzrzhmZV9mky2ng_Articular_circumference_of_head_of_radius.png "桡骨头环状关节面 (Articular circumference of head of radius)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/margo-anterior-radii/cK9TZZivOt8xnLcH4xwF2Q_zyBoHPcpz5_Margo_anterior_radii_1.png "桡骨前缘 (Anterior border of radius)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/processus-styloideus-radii/Jt51sUw3OE4Yoje57AhgPw_S7oppyWyEw_Processus_styloideus_radii_1.png "桡骨茎突 (Styloid process of radius)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/tuberositas-radii/37jeukpD2TYu0uTLZ9VjNA_qQGB9EfoBB_Tuberositas_radii_1.png "桡骨粗隆 (Radial tuberosity)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/tuberculum-dorsale/f4BhO1pPtx55MnxBLlQw_1AyKQyeHjc_Tuberculum_dorsale_1.png "桡骨背侧结节 (Dorsal radial tubercle)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/margo-posterior-radii/BAteZe7u8YbFxJVfqXhqGw_iSpNZ3PeSq_Margo_posterior_radii_1.png "桡骨后缘 (Posterior border of radius)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/margo-anterior-ulnae/YI03R0NU9HBYNAwlfBr3Q_Anterior_border_of_ulna.png "尺骨前缘 (Anterior border of ulna)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/olecranon/IjDXNKAuQZ9oCCulCoMwg_34m2dbZRSX_Olecranon_1.png "尺骨鹰嘴 (Olecranon of ulna)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/processus-coronoideus/8CbsenmwhaMP7i6OqNKGJA_xhgPov2Bms_Processus_coronoideus_1.png "尺骨冠突 (Coronoid process of ulna)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/tuberositas-ulnae/5L3Ojq2prG9jwASJ9JjRg_PEYKmDigEp_Tuberositas_ulnae_1.png "尺骨粗隆 (Tuberosity of ulna)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/processus-styloideus-ulnae/LT06c4CPyYGLuTWMhVFQ_PxmQJy8Aq1_Processus_styloideus_ulnae_1.png "尺骨茎突 (Styloid process of ulna)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/articular-facet-of-head-of-radius/8uR6UGpk8I1x8jFNNMFVTA_Articular_facet_of_head_of_radius.png "桡骨头关节面 (Articular facet of head of radius)；图像：Yousun Koh"){kind=logo}
桡骨头
Head of radius
1/14
同义词：
无
韧带
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/ligamentum-collaterale-ulnare/JqoazVGxg5yTan3BS7DUA_Ulnar_collateral_ligament_of_elbow.jpg "肘关节尺侧副韧带 (Ulnar collateral ligament of elbow joint)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/ligamentum-collaterale-radiale/OX4ou285E0gB0LzgtKLkA_Radial_collateral_ligament_of_elbow_joint.jpg "肘关节桡侧副韧带 (Radial collateral ligament of elbow joint)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/ligamentum-anulare-radii/A0W3KuK9T9nHLcL45Jj6Jg_Anular_ligament.jpg "桡骨环状韧带 (Anular ligament of radius)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/oblique-cord-1/pPB8hscqfx37U8J2MbFS5A_Oblique_cord.jpg "斜索 (Oblique cord)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/quadrate-ligament/KvI13GziUJ8X7Ta37BudCA_Quadrate_ligament.jpg "方形韧带 (Quadrate ligament)；图像：Paul Kim"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/membrana-interossea-antebrachii/0PwjnS78Ao2nhrYCv4aQIA_otRVqnge5B_Membrana_interossea_antebrachii_1.png "前臂骨间膜 (Interosseous membrane of forearm)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/palmar-radioulnar-ligament-2/E1ZAIJD9naWo5Eigq9iM8w_Palmar_radioulnar_ligament.jpg "掌桡尺韧带 (Palmar radioulnar ligament)；图像：Yousun Koh"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/dorsal-radioulnar-ligament/j3rZunHd8uc8rq1Nhmbaag_dorsal_radioulnar_ligament_magni.png "背侧桡尺韧带 (Dorsal radioulnar ligament)；图像：Paul Kim"){kind=logo}
小结
近端 |
桡骨头：桡骨头关节凹（连结肱骨小头）和桡骨头环状关节面（连结尺骨桡切迹） |
| 骨体 |
面：前面、外侧面、上面 缘：前缘、骨间缘（内侧缘）、后缘 标志：桡骨粗隆、旋前肌粗隆、茎突上嵴 |
| 远端末端 | 桡骨茎突、背侧结节、尺切迹、腕关节面 |
| 近端 | 鹰嘴、冠突、尺骨粗隆、桡切迹、滑车切迹 |
| 骨体 |
面：前面、后面、内侧面 缘：前缘、骨间缘、后缘 |
| 远端 | 尺骨头：尺骨头环状关节面，尺骨茎突 |
韧带 |
前臂骨间膜 斜索 桡骨环状韧带 桡侧副韧带 尺侧副韧带 方形韧带 尺桡韧带 |
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