Arthroscopic Iliopsoas Fractional Lengthening After Total Hip Arthroplasty: Using the Iliopsoas Air Bursogram Technique to Hit the Target.

Iliopsoas tendinitis following total hip arthroplasty has been linked to retroverted acetabular cup position with associated anterior overhang. For severely malpositioned components, preferred treatment is in the form of revision arthroplasty. However, for a substantial number of cases, iliopsoas tendinitis as well as associated pain and disability are observed in the presence of modest acetabular overhang. In such cases, patients may benefit substantially from arthroscopic iliopsoas fractional lengthening. Given altered postarthroplasty anatomy, we present an arthroscopic approach employing an iliopsoas air bursogram. In such a way, safe and predictable access can be provided for efficient tendon lengthening without capsular violation or inadvertent instrumentation of the nearby medial neurovascular bundle.