Case Reports

Anterior Hip Capsuloligamentous Reconstruction for Recurrent Instability After Hip Arthroscopy

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References

Our case also raises questions about the ideal postoperative regimen after standard hip arthroscopy. Although we do not routinely prescribe hip orthoses for our patients, others do.5 We are unaware of any proven benefit to the standard use of hip orthoses, and are concerned over the possible lack of patient compliance and of adequate restraint. We prefer to educate our patients on avoiding the “at-risk” position of hip extension and external rotation and to counsel them on gradual return to activities. Studies are needed to determine the role of these devices in hip arthroscopy, as well as the ideal postoperative activity regimen.

Our patient failed 6 months of conservative treatment after her dislocation and continued to have feelings of hip instability even during light activities. As a result of this failure and given an anatomical defect in the anterior capsuloligamentous complex, we decided our patient would be best treated with reconstruction of the defect. We did not think a revision capsular plication, as done by Ranawat and colleagues,5 was a reasonable option for our patient because of a large defect in the capsular tissue. Even in smaller defects, plication could potentially lead to overtightening of the capsule and subsequent overconstraint of the joint. Also, plication of defects may place excessive strain on the suture, which may fail if the repair is even mildly stressed.

Recurrent anterior hip dislocations, although rare in their own right, are much more common after THA than after hip arthroscopy.11 Fujishiro and colleagues12 described a similar technique to ours developed to treat a patient with recurrent anterior hip instability from anterior capsular insufficiency after multiple revision THA procedures. They used a Leeds-Keio artificial ligament to reconstruct the iliofemoral ligament, and this successfully treated their patient’s instability.

Conclusion

We believe this is the first report of recurrent instability after hip arthroscopy, necessitating reconstruction of the anterior capsuloligamentous complex. This case shows that reconstruction of the iliofemoral ligament with iliotibial band autograft is safe, restores hip stability without compromising function, and should be considered by any hip arthroscopist encountering a similar scenario. It also highlights the importance of the capsuloligamentous complex surrounding the hip joint for its stability and the need for further research to better delineate the indications for capsular repair/closure after capsulotomy.

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