Low C K, Chew J T, Mitra A K
Department of Orthopaedic Surgery, O Singapore General Hospital.
Singapore Med J. 1994 Aug;35(4):394-6.
Twelve cadaveric upper limbs were selected to evaluate the surgical approach to the posterior interosseous nerve through the midline of brachioradialis. There were 6 right and 6 left upper limbs. The limbs were placed with forearm in mid-prone position and elbow at 90 degrees of flexion. The incisions were made 2 cm distal to the lateral condyle and along the midline of the brachioradialis towards the radial styloid process for an average of 4.7 cm. The lateral cutaneous nerve of forearm was found lying on the anterior third of the brachioradialis. The brachioradialis was split along the midline. The following structures were identified. The radial nerve branched into superficial radial nerve and posterior interosseous nerve at an average of 1.8 cm below the lateral condyle. The superficial branch descended along the anterior third of the brachioradialis. The posterior interosseous nerve passed beneath the arcade of Frohse at an average of 3.8 cm below the lateral condyle. The radial recurrent artery was found crossing the posterior interosseous nerve at an average of 2.7 cm below the lateral condyle. The nerve to the extensor carpi radialis brevis originated from the radial nerve bifurcation or its branches at an average of 2.3 cm below the lateral condyle and entered the muscle at an average of 3.9 cm below the lateral condyle. The arcade of Frohse and the superficial head of supinator were divided to expose the entire posterior interosseous nerve.(ABSTRACT TRUNCATED AT 250 WORDS)
选取12具尸体上肢来评估经桡侧腕长伸肌中线入路至骨间后神经的手术方法。其中右上肢6例，左上肢6例。将上肢放置于前臂中度旋前位，肘关节屈曲90度。在外侧髁远端2 cm处沿桡侧腕长伸肌中线向桡骨茎突方向做切口，平均长度为4.7 cm。发现前臂外侧皮神经位于桡侧腕长伸肌前三分之一处。沿中线劈开桡侧腕长伸肌。识别出以下结构。桡神经在外侧髁下方平均1.8 cm处分为桡浅神经和骨间后神经。浅支沿桡侧腕长伸肌前三分之一下行。骨间后神经在外侧髁下方平均3.8 cm处穿过弗罗瑟弓下方。发现桡返动脉在外侧髁下方平均2.7 cm处横过骨间后神经。桡侧腕短伸肌支平均在外侧髁下方2.3 cm处发自桡神经分叉处或其分支，并在外侧髁下方平均3.9 cm处进入该肌。切开弗罗瑟弓和旋后肌浅头以暴露整个骨间后神经。（摘要截断于250字）
