The Journal of Bone and Joint Surgery (American). 2007;89:1442-1448.
doi:10.2106/JBJS.F.00363
© 2007 The Journal of Bone and Joint Surgery, Inc.
Long-Term Independent Evaluation After Arthroscopic Extra-Articular Bankart Repair with Absorbable TacksA Clinical and Radiographic Study with a Seven to Ten-Year Follow-up
Catarina Kartus, RPT1,
Jüri Kartus, MD, PhD2,
Nicholas Matis, MD3,
Rosemarie Forstner, MD3 and
Herbert Resch, MD3
1 City Physiotherapy, Strandgatan 2, SE-461 31 Trollhättan, Sweden
2 Department of Orthopaedics, NÄL Hospital, SE-461 85 Trollhättan,
Sweden. E-mail address:
juri.kartus{at}vgregion.se
3 University Hospital, A-5020 Salzburg, Austria
Investigation performed at University Hospital, Salzburg,
Austria
Disclosure: In support of their research for or preparation of this
work, one or more of the authors received, in any one year, outside funding or
grants of less than $10,000 from the Research and Development Department at
the Norra Älvsborg County Council, a nonprofit organization affiliated
with the NÄL Hospital. Neither they nor a member of their immediate
families received payments or other benefits or a commitment or agreement to
provide such benefits from a commercial entity. A commercial entity (Smith and
Nephew) paid or directed in any one year, or agreed to pay or direct, benefits
of less than $10,000 to a research fund, foundation, division, center,
clinical practice, or other charitable or nonprofit organization with which
one or more of the authors, or a member of his or her immediate family, is
affiliated or associated.
A commentary is available with the electronic versions of this article, on
our web site
(www.jbjs.org)
and on our quarterly CD-ROM (call our subscription department, at
781-449-9780, to order the CD-ROM).
Background: Several arthroscopic methods have been developed to
treat posttraumatic recurrent anterior shoulder instability in an attempt to
match the results that can be achieved with open repair. The aim of this study
was to perform an independent long-term clinical and radiographic evaluation
after extra-articular arthroscopic Bankart repair with use of absorbable tacks
(Suretac fixators).
Methods: Eighty-one consecutive patients with posttraumatic
recurrent anterior shoulder instability underwent an extra-articular
arthroscopic Bankart procedure. Seventy-one (88%) of the patients were
reexamined physically after a median duration of follow-up of 107 months by
two independent examiners and constituted the study group. Their clinical and
radiographic outcomes were documented.
Results: At the time of follow-up, twenty-seven (38%) of the
seventy-one patients had experienced some kind of shoulder instability,
although fifteen of them had had a new, clinically relevant shoulder injury.
Eleven patients had had subluxation only, and sixteen had had redislocation.
Fourteen of the twenty-seven patients had had a single episode of instability.
Seven patients had undergone additional surgery to treat shoulder instability.
The instability episodes occurred less than two years postoperatively in nine
patients, between two and five years postoperatively in twelve, and more than
five years postoperatively in six. At the time of final follow-up the median
external rotation in abduction was 90° (range, 0° to 120°)
compared with 95° (range, 70° to 125°) for the contralateral,
uninjured shoulders (p < 0.001). Before the injury, fifty-two patients
(73%) participated in overhead or contact sports, whereas thirty-four patients
(45%) participated in such activities at the time of follow-up. At the time of
follow-up, the drill holes used to implant the absorbable tacks were invisible
or hardly visible in fifty-eight (91%) of sixty-four patients for whom
radiographs had been made. A marked increase in degenerative changes was noted
when follow-up radiographs were compared with the preoperative
radiographs.
Conclusions: This long-term follow-up study of arthroscopic
extra-articular Bankart repairs revealed an unexpectedly high number of
patients with new episodes of instability. This finding led to a slight
modification of the technique. Since most instability episodes occurred after
two years, it is important to follow patients for a longer period of time
after surgical treatment of recurrent anterior shoulder instability to
identify the true recurrence rate.
Level of Evidence: Therapeutic Level IV. See Instructions
to Authors for a complete description of levels of evidence.

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