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Modified Arthroscopic Brostrom Procedure With Bone Tunnels.

ABSTRACT: The open anatomic repair of the anterior talofibular and calcaneofibular ligaments (modified Brostrom procedure) is widely accepted as the standard surgical stabilization procedure for lateral ankle instability that does not respond to conservative measures. Arthroscopic Brostrom procedures with a suture anchor have been reported to achieve both anatomic repair of the lateral ankle ligaments and management of the associated intra-articular lesions. However, the complication rates are higher than open Brostom procedures. Many of these complications are associated with the use of a suture anchor. We report a modified arthroscopic Brostrom procedure in which the anterolateral ankle capsule is anchored to the lateral malleolus through small bone tunnels instead of suture anchors.

SUBMITTER: Lui TH

PROVIDER: S-EPMC5040104 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

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Modified Arthroscopic Brostrom Procedure With Bone Tunnels.

Lui Tun Hing TH

Arthroscopy techniques 20160725 4

The open anatomic repair of the anterior talofibular and calcaneofibular ligaments (modified Brostrom procedure) is widely accepted as the standard surgical stabilization procedure for lateral ankle instability that does not respond to conservative measures. Arthroscopic Brostrom procedures with a suture anchor have been reported to achieve both anatomic repair of the lateral ankle ligaments and management of the associated intra-articular lesions. However, the complication rates are higher than ...[more]

PMID: 27709036

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Project description:In the presence of bone loss, the Bristow or Latarjet procedure is used to alleviate anterior glenohumeral instability. The techniques have gradually improved under arthroscopy. However, such an arthroscopic procedure has a steep learning curve, lengthy operation time, and considerable risk of complications, inhibiting its rapid development. The current method of modified arthroscopic Bristow procedure with screw fixation without subscapularis split reduces surgical time, reduces the risk of nerve damage consequences, and is simple to apply. Technique Video Video 1 We present our modified arthroscopic Bristow procedure: screw fixation without subscapularis split. The patient is placed in the beach-chair position, and 5 portals are created. After performing a diagnostic arthroscopy examination, the coracoid process lower surface, tip, and base, and the conjoined tendon are identified. The soft tissue lateral to the conjoined tendon is released to a sufficient length to allow transferring the coracoid process. The coracoacromial ligament is excised at its coracoid insertion to expose its lateral and upper surfaces. Subsequently, the pectoralis minor muscle is released from the coracoid to ∼5 cm below the junctions between the pectoralis minor muscle and the conjoined tendon to ensure the transfer of the coracoid process will not be affected. A 1.2-mm K-wire is drilled into the coracoid under the guidance of a thin cannula. A PDS line is passed through the bone tunnel for traction and guidance. After ensuring an adequate length of the coracoid bone, it is osteotomized with a willow saw. Subsequently, the labrum and capsule are detached completely from the glenoid to the 6-o’clock position. The glenoid is refreshed by a burr. The upper edge of the subscapularis is pressed downwards by a switching stick until the 4-o’clock position of the anterior glenoid is exposed. A marking point is placed to assist in creating a tunnel at the 4-o’clock position. After drilling and measuring, a 1.2-mm K-wire is inserted into the tunnel to guide the screw. The coracoid is pulled out through portal D, its length is measured, and its osteotomy surface is trimmed to match the anterior glenoid surface. A hole is drilled from the center of the osteotomy surface to the tip of the coracoid with a 1.2-mm K-wire. The hole created by the 1.2-mm K-wire is drilled through with a 2.7-mm hollow drill. A cannulated screw with a diameter of 4 mm is implanted into the coracoid graft along the 1.2-mm K-wire, leaving 2 mm of the screw head above the osteotomy surface for the coracoid's final fixation. The lateral edge of the conjoined tendon is sutured with No. 2 ETHIBOND suture near the coracoid and kept sufficiently taut to prevent twisting during coracoid fixation. The coracoid with partial screw fixation is then inserted for the final fixation. The tip of the screw is positioned against the K-wire introduced through the glenoid tunnel in the previous phase. The K-wire is threaded through the screw, and the coracoid and screw are secured with a screwdriver. The final placement of the transferred coracoid is arthroscopically assessed through portal B. The postoperative anteroposterior radiograph shows that a single screw maintains the coracoid in place. The 3-dimensional computed tomography scan depicts the locations of the graft and screw. The transferred coracoid is seen at the 4-o’clock position, and the glenoid surface is well integrated with the coracoid graft’s surface. The scan also shows that the transferred coracoid is standing on the glenoid surface with a 90° rotation. (PDS, polydioxanone.).

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Modified Arthroscopic Brostrom Procedure With Bone Tunnels.

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Modified Arthroscopic Brostrom Procedure With Bone Tunnels.

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