PMID- 36199833
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20221007
IS  - 2325-9671 (Print)
IS  - 2325-9671 (Electronic)
IS  - 2325-9671 (Linking)
VI  - 10
IP  - 9
DP  - 2022 Sep
TI  - Extent of Cam Resection Relative to Epiphyseal Line and Its Association With 
      Clinical Outcomes After Arthroscopic Treatment for Femoroacetabular Syndrome.
PG  - 23259671221125509
LID - 10.1177/23259671221125509 [doi]
LID - 23259671221125509
AB  - BACKGROUND: Inadequate resection of cam lesions can cause inferior outcomes after 
      hip arthroscopy and result in revision surgery for femoroacetabular impingement 
      syndrome (FAIS). PURPOSE: To evaluate the association between postoperative cam 
      lesions measured using the proximal boundaries of resection area (PBRE) relative 
      to the epiphyseal line and 2-year outcomes after hip arthroscopy. STUDY DESIGN: 
      Cohort study; Level of evidence, 3. METHODS: Included were patients with FAIS who 
      had undergone primary hip arthroscopy between 2016 and 2018. The PBRE was 
      calculated by measuring the linear distance from the PBRE to the epiphyseal line, 
      dividing it by the diameter of the femoral head, and multiplying by 100; PBRE 
      measurements were made at the 12-, 1-, and 2-o'clock positions on postoperative 
      hip computed tomography. Within each clockface position, patients were divided 
      into subgroups depending on whether their postoperative PBRE was greater than a 
      half standard deviation above the mean (adequate resection) or less than or equal 
      to a half standard deviation above the mean (inadequate resection). 
      Patient-reported outcomes (PROs; Hip Outcome Score-Activities of Daily Living 
      [HOS-ADL], International Hip Outcome Tool-Short Form [iHOT-12], modified Harris 
      Hip Score [mHHS], and pain visual analog scale [VAS]) and rates of achieving the 
      minimal clinically important difference (MCID) and patient-acceptable symptomatic 
      state (PASS) were compared among the subgroups. RESULTS: Included were 80 pairs 
      of hips at 12 o'clock, 81 pairs of hips at 1 o'clock, and 80 pairs of hips at 2 
      o'clock. All subgroups demonstrated significant improvements in PRO scores at a 
      minimum 2-year follow-up compared with preoperatively. At the 12-o'clock 
      position, the subgroup with adequate resection had significantly superior HOS-ADL 
      (P = .004), iHOT-12 (P < .001), and mHHS (P < .001) scores and were more likely 
      to achieve the MCID for the iHOT-12 score (P = .035) and the PASS for the HOS-ADL 
      (P = .003), iHOT-12 (P = .007), and mHHS (P < .001) scores compared with the 
      matched subgroup. There were no significant differences in PRO scores or rates of 
      MCID and PASS for the 1- or 2-o'clock groups. CONCLUSION: The epiphyseal line may 
      be a useful and reproducible landmark measurement for cam-type deformity. 
      Patients considered to have inadequate resection at 12 o'clock had lower outcome 
      scores at a minimum 2-year follow-up.
CI  - (c) The Author(s) 2022.
FAU - Yang, Fan
AU  - Yang F
AD  - Department of Sports Medicine, Peking University Third Hospital, Institute of 
      Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, 
      Beijing, China.
FAU - Huang, Hong-Jie
AU  - Huang HJ
AD  - Department of Sports Medicine, Peking University Third Hospital, Institute of 
      Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, 
      Beijing, China.
FAU - He, Zi-Yi
AU  - He ZY
AD  - Department of Sports Medicine, Peking University Third Hospital, Institute of 
      Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, 
      Beijing, China.
FAU - Xu, Yan
AU  - Xu Y
AD  - Department of Sports Medicine, Peking University Third Hospital, Institute of 
      Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, 
      Beijing, China.
FAU - Zhang, Xin
AU  - Zhang X
AD  - Department of Sports Medicine, Peking University Third Hospital, Institute of 
      Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, 
      Beijing, China.
FAU - Wang, Jian-Quan
AU  - Wang JQ
AD  - Department of Sports Medicine, Peking University Third Hospital, Institute of 
      Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, 
      Beijing, China.
LA  - eng
PT  - Journal Article
DEP - 20220929
PL  - United States
TA  - Orthop J Sports Med
JT  - Orthopaedic journal of sports medicine
JID - 101620522
PMC - PMC9528010
OTO - NOTNLM
OT  - cam deformity
OT  - epiphyseal line
OT  - femoroacetabular impingement syndrome
OT  - hip arthroscopy
OT  - patient-reported outcomes
COIS- One or more of the authors has declared the following potential conflict of 
      interest or source of funding: This work was supported by grant from the National 
      Natural Science Foundation of China (grant No. 82072403). AOSSM checks author 
      disclosures against the Open Payments Database (OPD). AOSSM has not conducted an 
      independent investigation on the OPD and disclaims any liability or 
      responsibility relating thereto.
EDAT- 2022/10/07 06:00
MHDA- 2022/10/07 06:01
PMCR- 2022/09/29
CRDT- 2022/10/06 02:14
PHST- 2022/07/01 00:00 [received]
PHST- 2022/07/27 00:00 [accepted]
PHST- 2022/10/06 02:14 [entrez]
PHST- 2022/10/07 06:00 [pubmed]
PHST- 2022/10/07 06:01 [medline]
PHST- 2022/09/29 00:00 [pmc-release]
AID - 10.1177_23259671221125509 [pii]
AID - 10.1177/23259671221125509 [doi]
PST - epublish
SO  - Orthop J Sports Med. 2022 Sep 29;10(9):23259671221125509. doi: 
      10.1177/23259671221125509. eCollection 2022 Sep.