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医学科普

舟骨骨折的手术入路

发表者:陈华 3960人已读

  • Palmar approach to the scaphoid

Palmar approach to the scaphoid - Indications enlarge 北京301医院骨科陈华

Indications


This approach is indicated for the following injuries:

  • Irreducible, displaced scaphoid fractures, in the distal two thirds

  • Comminuted fractures

 

Palmar approach to the scaphoid - Landmarks enlarge

Angled skin incision


The landmarks for this incision are:

  • The scaphoid tubercle

  • The flexor carpi radialis (FCR) tendon

Palmar approach to the scaphoid - Incision enlarge

The incision line can be marked on the skin in line with the FCR tendon, starting at the scaphoid tubercle, and running proximally for about 2 cm. Distal of the scaphoid tubercle, the incision angles towards the base of the thumb, over the scaphotrapezial joint.

Palmar approach to the scaphoid - Incision enlarge

Zigzag incision


Alternatively, a zigzag incision may be constructed using the same landmarks.

Palmar approach to the scaphoid – Ligation of palmar branch of radial artery enlarge

Ligate superficial palmar branch of radial artery


The superficial palmar branch of the radial artery passes towards the palm, running close to the scaphoid tubercle. If necessary, it can be ligated and divided.

Palmar approach to the scaphoid – Opening of CFR sheath enlarge

Open the FCR sheath


The FCR sheath is opened as far distally as possible, and the tendon retracted towards the ulnar side.

Palmar approach to the scaphoid – Exposure of the wrist capsule enlarge

Exposure of the wrist capsule


The capsule is then incised obliquely from the tubercle distally towards the palmar rim of the radius proximally.

As determined by the fracture configuration, preserve as much of the palmar ligament complex as possible, as it helps to contain the proximal pole and prevent palmar tilt of the scaphoid.

Palmar approach to the scaphoid – Exposure of the scaphoid enlarge

Expose the scaphoid


Retract the divided radioscaphocapitate ligament to expose the scaphoid.

Palmar approach to the scaphoid – Exposure of the scaphoid enlarge

If it is necessary to expose the proximal part of the scaphoid, divide the long radiolunate ligament, proximally as far as the palmar rim of the radius.

Palmar approach to the scaphoid – Exposure of scaphotrapezial joint enlarge

Exposure of scaphotrapezial joint


The scaphotrapezial joint must be exposed to allow optimal positioning of a screw.The incision is deepened distally, dividing the origin of the thenar muscles in line with their fibres.

Palmar approach to the scaphoid – Exposure of scaphotrapezial joint enlarge

The scaphotrapezial joint is identified, the scaphotrapezial ligament divided in the line of its fibers, and the joint capsule opened.

Palmar approach to the scaphoid – Wound closure enlarge

Wound closure


The divided palmar ligaments (radioscaphocapitate/long radiolunate) must be repaired with fine interrupted sutures in order to prevent secondary carpal instability.
Approximate the soft tissues over the scaphotrapezial joint.
Test the integrity of the soft-tissue repair by passive wrist motion.
Finally, the FCR tendon sheath is repaired and covered with subcutaneous tissue.


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发表于:2014-11-13 13:25

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