PMID- 28840150
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220318
IS  - 2325-9671 (Print)
IS  - 2325-9671 (Electronic)
IS  - 2325-9671 (Linking)
VI  - 5
IP  - 8
DP  - 2017 Aug
TI  - Outcomes for Arthroscopic Treatment of Anterior Inferior Iliac Spine (Subspine) 
      Hip Impingement.
PG  - 2325967117723109
LID - 10.1177/2325967117723109 [doi]
LID - 2325967117723109
AB  - BACKGROUND: Femoroacetabular hip impingement (FAI) is now well recognized; 
      however, anterior inferior iliac spine (AIIS; or subspine) impingement is a form 
      of hip impingement that is underrecognized and can be an important source of hip 
      disability and functional limitation. PURPOSE: To investigate the outcomes after 
      arthroscopic treatment of AIIS/subspine-related hip impingement in the absence of 
      FAI surgery. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: A 
      prospective institutional hip preservation registry was reviewed to identify 
      patients who underwent arthroscopic AIIS decompression without concurrent 
      treatment of FAI. Primary outcome tools captured in the registry included the 
      modified Harris Hip Score (mHHS), the Hip Outcome Score (HOS), and the 
      International Hip Outcome Tool-33 (iHOT-33). Patients with minimum 1-year 
      follow-up were included. Meaningful outcome improvement was determined per 
      minimal clinically important difference (MCID). Statistical analyses were 
      primarily descriptive. RESULTS: Thirty-three patients with a mean follow-up of 
      19.1 months (range, 12-44 months) were identified. All patients were female, with 
      a mean +/- SD age of 26.1 +/- 10.3 years. All patients were found to have an 
      associated labral tear, and the mean acetabular version was increased at 2 and 3 
      o'clock (14.5 degrees  and 19.8 degrees , respectively). Mean preoperative outcome scores on the 
      mHHS, HOS ADL (activities of daily living), HOS sport, and iHOT-33 were 57.2 +/- 
      15.3, 66.9 +/- 18.8, 43.9 +/- 23.6, and 33.5 +/- 18.3, respectively. At final available 
      follow-up, mean scores on these outcome measures were 79.5 +/- 19.0, 86.8 +/- 15.8, 
      70.4 +/- 32.8, and 65.0 +/- 31.0, respectively. By the 1-year follow-up, MCID had 
      been achieved in the majority of patients across all 4 tools. CONCLUSION: There 
      is a paucity of outcomes evidence on AIIS/subspine-related hip impingement. This 
      study demonstrates that isolated subspine impingement can be a cause of hip 
      disability, even in the absence of FAI. Patients with isolated subspine 
      impingement are more likely to be women and to present with low patient-reported 
      outcome scores. However, meaningful outcome improvement can be achieved with 
      arthroscopic AIIS decompression.
FAU - Nwachukwu, Benedict U
AU  - Nwachukwu BU
AD  - Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New 
      York, USA.
FAU - Chang, Brenda
AU  - Chang B
AD  - Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New 
      York, USA.
FAU - Fields, Kara
AU  - Fields K
AD  - Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New 
      York, USA.
FAU - Rinzler, Jeremy
AU  - Rinzler J
AD  - Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New 
      York, USA.
FAU - Nawabi, Danyal H
AU  - Nawabi DH
AD  - Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New 
      York, USA.
FAU - Ranawat, Anil S
AU  - Ranawat AS
AD  - Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New 
      York, USA.
FAU - Kelly, Bryan T
AU  - Kelly BT
AD  - Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New 
      York, USA.
LA  - eng
PT  - Journal Article
DEP - 20170810
PL  - United States
TA  - Orthop J Sports Med
JT  - Orthopaedic journal of sports medicine
JID - 101620522
PMC - PMC5555511
OTO - NOTNLM
OT  - anterior inferior iliac spine
OT  - epidemiology
OT  - hip arthroscopy
OT  - minimal clinically important difference
OT  - outcome
OT  - quality of life
OT  - subspine impingement
COIS- One or more of the authors has declared the following potential conflicts of 
      interest or source of funding: A.S.R. receives publishing royalties from Elsevier 
      Inc, is a consultant for Stryker-MAKO Surgical Corp, and has editorial duties 
      with Springer. B.T.K. is a consultant for A3 Surgical and Arthrex and has 
      stock/stock options in A3 Surgical.
EDAT- 2017/08/26 06:00
MHDA- 2017/08/26 06:01
PMCR- 2017/08/10
CRDT- 2017/08/26 06:00
PHST- 2017/08/26 06:00 [entrez]
PHST- 2017/08/26 06:00 [pubmed]
PHST- 2017/08/26 06:01 [medline]
PHST- 2017/08/10 00:00 [pmc-release]
AID - 10.1177_2325967117723109 [pii]
AID - 10.1177/2325967117723109 [doi]
PST - epublish
SO  - Orthop J Sports Med. 2017 Aug 10;5(8):2325967117723109. doi: 
      10.1177/2325967117723109. eCollection 2017 Aug.