Article
Multidisciplinary Sciences
Akihiko Hiyama, Hiroyuki Katoh, Daisuke Sakai, Masato Sato, Masahiko Watanabe
Summary: This study found that preoperative sagittal misalignment does not significantly affect the correction of alignment after lateral lumbar interbody fusion (LLIF) surgery in patients with lumbar degenerative diseases. However, postoperative low back pain, leg pain, and leg numbness may be improved regardless of the preoperative sagittal alignment.
SCIENTIFIC REPORTS
(2022)
Article
Clinical Neurology
Han Jo Kim, R. Kiran Alluri, Renaud Lafage, Jonathan Elysee, Justin S. Smith, Gregory M. Mundis, Christopher Shaffrey, Christopher P. Ames, Douglas C. Burton, Eric O. Klineberg, Shay Bess, Frank Schwab, Munish Gupta, Virginie Lafage
Summary: In this retrospective study of a multicenter Adult Spinal Deformity (ASD) Database, the changes in pelvic tilt (PT) were found to be significantly correlated with regional changes in lumbar lordosis. Specifically, an increase in lumbar lordosis in the L1-4 region correlated with a decrease in PT, while an increase in lumbar lordosis in the L4-S1 region also resulted in a decrease in PT. These findings provide valuable insights for surgical planning in cases of ASD.
Article
Orthopedics
Yasuhito Takahashi, Kei Watanabe, Masashi Okamoto, Shun Hatsushikano, Kazuhiro Hasegawa, Naoto Endo
Summary: In this study, we found that the novel morphologic parameters SIP and PIA were reliable for determining the morphology and orientation of the pelvis. The ideal lumbar lordosis angle could be accurately predicted using SIP, with equal accuracy as using PI.
BMC MUSCULOSKELETAL DISORDERS
(2021)
Article
Clinical Neurology
Siyu Zhou, Zhuoran Sun, Wei Li, Da Zou, Weishi Li
Summary: This cross-sectional study investigated the age- and pelvic incidence-related variations of sagittal alignment in asymptomatic Chinese population. The results showed that sagittal parameters were significantly influenced by age and pelvic incidence, with differences observed among different PI subgroups. Individual pelvic morphology should be carefully considered in the assessment and restoration of sagittal balance.
GLOBAL SPINE JOURNAL
(2022)
Article
Clinical Neurology
Chang Hwa Ham, Youn-Kwan Park, Joo Han Kim, Woo-Keun Kwon, Dong Wook Kim, Hong Joo Moon
Summary: Sagittal spinopelvic alignment (SSPA) parameters are crucial for diagnosing and monitoring the progression of adult spinal deformities (ASDs). Certain clinical symptoms in patients with lumbar spinal stenosis (LSS) and herniated nucleus pulposus (HNP) may distort SSPA and mimic ASD.
Article
Clinical Neurology
Ki Young Lee, Jung-Hee Lee, Sang-Kyu Im
Summary: The study evaluated optimal target values for spine balance correction in elderly patients with adult spinal deformity over 60 years old. Risk factors for postoperative sagittal imbalance were identified as pelvic incidence (PI), lumbar lordosis (LL), and post pelvic tilt ratio (PTr), with target values suggested as PI-LL <1.33 and PTr <25.95%. These findings can serve as effective guidelines for spine surgeons performing reconstruction surgeries for elderly patients with sagittal imbalance.
Article
Multidisciplinary Sciences
Yang Li, Jianmin Sun, Guodong Wang
Summary: The retrospective study on asymptomatic adult volunteers found that lumbar lordosis morphology is influenced by pelvic incidence and paraspinal muscle. Proximal lumbar lordosis has a stronger correlation with pelvic incidence compared to distal lumbar lordosis.
SCIENTIFIC REPORTS
(2021)
Article
Clinical Neurology
Anthony L. Mikula, Jeremy L. Fogelson, Soliman Oushy, Zachariah W. Pinter, Pierce A. Peters, Kingsley Abode-Iyamah, Arjun S. Sebastian, Brett Freedman, Bradford L. Currier, David W. Polly, Benjamin D. Elder
Summary: The study found that patients with bilateral SI joint vacuum signs experienced a significant change in PI between the supine and standing positions, suggesting potential increasing motion across the SI joint due to significant joint degeneration.
JOURNAL OF NEUROSURGERY-SPINE
(2021)
Article
Orthopedics
Samir Smajic, Aleksandar Vujadinovic, Adnan Kasapovic, Dakheel A. Aldakheel, Yann Philippe Charles, Axel Walter, Jean-Paul Steib, Nicola Maffulli, Filippo Migliorini, Alice Baroncini
Summary: The study showed that Mobidisc implantation led to improvement in lumbar lordosis (LL) and segmental lordosis (SL) at the treated level, with an increase in both anterior and posterior disc height. However, disc height at the adjacent level decreased.
JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH
(2022)
Article
Clinical Neurology
Chizuo Iwai, Javier Pizones, Louis Boissiere, Sreenath Jakinapally, Caglar Yilgor, Daniel Larrieu, Ferran Pellise, Jean-Marc Vital, Anouar Bourghli, Ibrahim Obeid
Summary: The study conducted a prospective observation of 25 patients with spinal deformities, revealing that the location of the lumbar apex can change with different postural positions, but remains stable when assessed as the furthest point of global lumbar lordosis. These findings can help in assessing compensation of lumbar lordosis and guide lumbar lordosis molding in ASD surgery.
EUROPEAN SPINE JOURNAL
(2021)
Article
Clinical Neurology
Louis Boissiere, Fernando Guevara-villazon, Anouar Bourghli, Ralph Abdallah, Ferran Pellise, Javier Pizones, Ahmet Alanay, Frank Kleinstueck, Daniel Larrieu, Ibrahim Obeid
Summary: This study retrospectively analyzed the relationship between rod and spinal shape in adult spinal deformity surgery. The results showed variations between the curvatures of the rod and spine, suggesting that the shape of the rod does not seem to predict the shape of the spine in the sagittal plane.
EUROPEAN SPINE JOURNAL
(2023)
Article
Clinical Neurology
Jichao Ye, Sean M. Rider, Renaud Lafage, Sachin Gupta, Ali S. Farooqi, Themistocles S. Protopsaltis, Peter G. Passias, Justin S. Smith, Virginie Lafage, Han -Jo Kim, Eric O. Klineberg, Khaled M. Kebaish, Justin K. Scheer, Gregory M. Mundis Jr, Alex Soroceanu, Shay Bess, Christopher P. Ames, Christopher I. Shaffrey, Munish C. Gupta, ISSG
Summary: The study aimed to evaluate spinopelvic sagittal alignment and spinal compensatory changes in adult cervical kyphotic deformity. A database of 129 adult patients undergoing cervical reconstruction was reviewed and compared with asymptomatic control patients. The results showed that cervical deformity was associated with increased C0-2 lordosis, T1S, thoracolumbar junction kyphosis, and pelvic tilt. Cervical reconstruction resulted in decreased C0-2 lordosis, increased T1S, and increased thoracic and thoracolumbar junction kyphosis. Severe cervical kyphosis was associated with greater C0-2 lordosis and postoperative reduction, while severe sagittal malalignment was associated with decreased pelvic tilt and increased lumbar lordosis.
JOURNAL OF NEUROSURGERY-SPINE
(2023)
Article
Orthopedics
Zi-fang Zhang, Deng-bin Qi, Tian-hao Wang, Chun-guo Wang, Zheng Wang, Yan Wang, Guo-quan Zheng
Summary: Correction of lower lumbar lordosis can significantly impact global spine realignment, providing valuable information for surgeons in planning spinal correction surgery.
ORTHOPAEDIC SURGERY
(2021)
Article
Multidisciplinary Sciences
Teiji Harada, Hiroshi Hashizume, Takaya Taniguchi, Toshiko Iidaka, Yoshiki Asai, Hiroyuki Oka, Shigeyuki Muraki, Toru Akune, Hiroshi Kawaguchi, Kozo Nakamura, Munehito Yoshida, Sakae Tanaka, Noriko Yoshimura, Hiroshi Yamada
Summary: The relationship between acetabular dysplasia and spino-pelvic alignment was explored in this study. The results showed no significant association between acetabular dysplasia and spino-pelvic parameters, but a higher pelvic incidence may be a factor associated with acetabular dysplasia.
SCIENTIFIC REPORTS
(2022)
Article
Clinical Neurology
Altug Yucekul, Alp Ozpinar, Fevzi Duhan Berkan Kilickan, Mohammed Dalla, Nallammai Muthiah, Tais Zulemyan, Yasemin Yavuz, Javier Pizones, Ibrahim Obeid, Frank Kleinstuck, Francisco Javier Sanchez Perez-Grueso, Ferran Pellise, Caglar Yilgor, Ahmet Alanay
Summary: This study aimed to evaluate the relationship between spinopelvic parameters and lower extremity compensation angles and to examine their coupled change with deformity correction. The results showed a significant correlation between spinopelvic parameters and lower extremity compensation angles, and there were corresponding changes between preoperative and postoperative measurements.
EUROPEAN SPINE JOURNAL
(2023)