PMID- 37010611 OWN - NLM STAT- MEDLINE DCOM- 20230626 LR - 20240109 IS - 1432-0932 (Electronic) IS - 0940-6719 (Linking) VI - 32 IP - 7 DP - 2023 Jul TI - Preoperative cross-sectional area of psoas muscle correlates with short-term functional outcomes after posterior lumbar surgery. PG - 2326-2335 LID - 10.1007/s00586-023-07533-7 [doi] AB - PURPOSE: To determine the optimal level for the measurement of psoas cross-sectional area and examine the correlation with short-term functional outcomes of posterior lumbar surgery. METHODS: Patients who underwent minimally invasive posterior lumbar surgery were included in this study. The cross-sectional area of psoas muscle was measured at each intervertebral level on T2-weighted axial images of preoperative MRI. Normalized total psoas area (NTPA) (mm(2)/m(2)) was calculated as total psoas area normalized to patient height. Intraclass Correlation Coefficient (ICC) was calculated for the analysis of inter-rater reliability. Patient reported outcome measures including Oswestry disability index (ODI), visual analog scale (VAS), short form health survey (SF-12) and patient-reported outcomes measurement information system were collected. A multivariate analysis was performed to elucidate independent predictors associated with failure to reach minimal clinically important difference (MCID) in each functional outcome at 6 months. RESULTS: The total of 212 patients were included in this study. ICC was highest at L3/4 [0.992 (95% CI: 0.987-0.994)] compared to the other levels [L1/2 0.983 (0.973-0.989), L2/3 0.991 (0.986-0.994), L4/5 0.928 (0.893-0.952)]. Postoperative PROMs were significantly worse in patients with low NTPA. Low NTPA was an independent predictor of failure to reach MCID in ODI (OR = 2.68; 95% CI: 1.26-5.67; p = 0.010) and VAS leg (OR = 2.43; 95% CI: 1.13-5.20; p = 0.022). CONCLUSION: Decreased psoas cross-sectional area on preoperative MRI correlated with functional outcomes after posterior lumbar surgery. NTPA was highly reliable, especially at L3/4. CI - (c) 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature. FAU - Urakawa, Hikari AU - Urakawa H AD - Hospital for Special Surgery, 535 E 70th St, New York, NY, 10021, USA. FAU - Sato, Kosuke AU - Sato K AD - Hospital for Special Surgery, 535 E 70th St, New York, NY, 10021, USA. FAU - Vaishnav, Avani S AU - Vaishnav AS AD - Hospital for Special Surgery, 535 E 70th St, New York, NY, 10021, USA. FAU - Lee, Ryan AU - Lee R AD - Hospital for Special Surgery, 535 E 70th St, New York, NY, 10021, USA. FAU - Chaudhary, Chirag AU - Chaudhary C AD - Hospital for Special Surgery, 535 E 70th St, New York, NY, 10021, USA. FAU - Mok, Jung Kee AU - Mok JK AD - Hospital for Special Surgery, 535 E 70th St, New York, NY, 10021, USA. FAU - Virk, Sohrab AU - Virk S AD - North Shore University Hospital, 300 Community Dr, Manhasset, NY, USA. AD - Long Island Jewish Medical Center, 825 Northern Blvd, Great Neck, NY, USA. FAU - Sheha, Evan AU - Sheha E AD - Hospital for Special Surgery, 535 E 70th St, New York, NY, 10021, USA. AD - Weill Cornell Medical College, 1300 York Ave, New York, NY, USA. FAU - Katsuura, Yoshihiro AU - Katsuura Y AD - Adventist Health Howard Memorial, 1 Marcela Dr, Willits, CA, USA. FAU - Kaito, Takashi AU - Kaito T AD - Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, Japan. FAU - Gang, Catherine Himo AU - Gang CH AD - Hospital for Special Surgery, 535 E 70th St, New York, NY, 10021, USA. FAU - Qureshi, Sheeraz A AU - Qureshi SA AUID- ORCID: 0000-0002-7177-1756 AD - Hospital for Special Surgery, 535 E 70th St, New York, NY, 10021, USA. sheerazqureshimd@gmail.com. AD - Weill Cornell Medical College, 1300 York Ave, New York, NY, USA. sheerazqureshimd@gmail.com. LA - eng GR - No direct funding was received for this study. However, this study used REDCap (Research Electronic Data Capture) hosted at Weill Cornell Medicine Clinical and Translational Science Center supported by the National Center For Advancing Translational Science of the National Institute of Health under award number: UL1 TR002384./NH/NIH HHS/United States GR - No direct funding was received for this study. However, this study used REDCap (Research Electronic Data Capture) hosted at Weill Cornell Medicine Clinical and Translational Science Center supported by the National Center For Advancing Translational Science of the National Institute of Health under award number: UL1 TR002384./NH/NIH HHS/United States GR - UL1 TR002384/TR/NCATS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20230403 PL - Germany TA - Eur Spine J JT - European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society JID - 9301980 SB - IM MH - Humans MH - *Psoas Muscles/diagnostic imaging MH - Reproducibility of Results MH - Minimally Invasive Surgical Procedures MH - Lumbar Vertebrae/diagnostic imaging/surgery MH - Lumbosacral Region MH - *Spinal Fusion/methods MH - Treatment Outcome MH - Retrospective Studies OTO - NOTNLM OT - Functional outcomes OT - Minimal clinically important difference OT - Muscle health OT - Posterior lumbar surgery OT - Psoas OT - Sarcopenia EDAT- 2023/04/04 06:00 MHDA- 2023/06/26 06:41 CRDT- 2023/04/03 11:16 PHST- 2021/10/18 00:00 [received] PHST- 2023/01/09 00:00 [accepted] PHST- 2022/09/26 00:00 [revised] PHST- 2023/06/26 06:41 [medline] PHST- 2023/04/04 06:00 [pubmed] PHST- 2023/04/03 11:16 [entrez] AID - 10.1007/s00586-023-07533-7 [pii] AID - 10.1007/s00586-023-07533-7 [doi] PST - ppublish SO - Eur Spine J. 2023 Jul;32(7):2326-2335. doi: 10.1007/s00586-023-07533-7. Epub 2023 Apr 3.