Pre-operative intra-articular hip injection as a predictor of short-term outcome following arthroscopic management of femoroacetabular impingement

Knee Surg Sports Traumatol Arthrosc. 2014 Apr;22(4):801-5. doi: 10.1007/s00167-014-2883-y. Epub 2014 Feb 5.


Purpose: Diagnostic hip injections are often used to confirm intra-articular pathology prior to arthroscopic treatment for femoroacetabular impingement (FAI). However, little is known whether the type of response correlates with the post-operative functional outcomes. The purpose of this study is to document the ability of a diagnostic hip injection to predict short-term functional outcomes following arthroscopic surgical management.

Methods: A prospective cohort of 52 patients diagnosed with FAI who had an intra-articular hip injection prior to arthroscopic surgery was evaluated. A pain diary was used during the 2 weeks after hip injection to document response. In addition, the modified Harris Hip Score (mHHS) was administered preoperatively and 6 months post-operatively to assess functional outcomes. The relationship between response to an intra-articular hip injection and mHHS scores 6 months after FAI surgery was evaluated.

Results: Overall, 42 of 52 (81 %) patients diagnosed with FAI achieved pain relief from the hip injection. Outcomes according to mHHS scores improved significantly at the 6-month follow-up visit (19 points, 95 % CI 15-24, p = 0.001). The therapeutic utility of the hip injection suggested that lack of pain relief predicted a lack of functional improvement following arthroscopic surgery.

Conclusion: In this study, the data suggests that a positive response from an intra-articular hip injection is not a strong predictor of short-term functional outcomes following arthroscopic management of FAI. However, a negative response from an intra-articular hip injection may predict a higher likelihood of having a negative result from surgery.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Anesthetics, Local / administration & dosage
  • Arthroscopy
  • Bupivacaine / administration & dosage
  • Female
  • Femoracetabular Impingement / drug therapy*
  • Femoracetabular Impingement / surgery*
  • Glucocorticoids / administration & dosage
  • Hip Joint
  • Humans
  • Injections, Intra-Articular
  • Male
  • Methylprednisolone / administration & dosage
  • Methylprednisolone / analogs & derivatives
  • Methylprednisolone Acetate
  • Middle Aged
  • Pilot Projects
  • Preoperative Care
  • Prospective Studies
  • Recovery of Function
  • Treatment Outcome
  • Young Adult


  • Anesthetics, Local
  • Glucocorticoids
  • Methylprednisolone Acetate
  • Methylprednisolone
  • Bupivacaine