Objective: Biportal endoscopic transforaminal lumbar interbody fusion (BE-TLIF) is an emerging, minimally invasive technique performed under biportal endoscopic guidance. However, concerns regarding cage subsidence and sufficient fusion during BE-TLIF necessitate careful selection of an appropriate interbody cage to improve surgical outcomes. This study compared the fusion rate, subsidence, and other radiographic parameters according to the material and size of the cages used in BE-TLIF. Methods: In this retrospective cohort study, patients who underwent single-segment BE-TLIF between April 2019 and February 2023 were divided into 3 groups: group A, regular-sized three-dimensionally (3D)-printed titanium cages; group B, regular-sized polyetheretherketone cages; and group C, large-sized 3D-printed titanium cages. Radiographic parameters, including lumbar lordosis, segmental lordosis, anterior and posterior disc heights, disc angle, and foraminal height, were measured before and after surgery. The fusion rate and severity of cage subsidence were compared between the groups. Results: No significant differences were noted in the demographic data or radiographic parameters between the groups. The fusion rate on 1-year postoperative computed tomography was comparable between the groups. The cage subsidence rate was significantly lower in group C than in group A (41.9% vs. 16.7%, p=0.044). The severity of cage subsidence was significantly lower in group C (0.93±0.83) than in groups A (2.20±1.84, p=0.004) and B (1.79±1.47, p=0.048). Conclusion Cage materials did not affect the 1-year postoperative outcomes of BE-TLIF; however, subsidence was markedly reduced in large cages. Larger cages may provide more stable postoperative segments.

Background: The International Hip Outcome Tool 12 (iHOT12), which is now widely adopted in clinical settings, has been established as reliable, valid, and responsive, positioning as a critical evaluation tool globally to gauge the efficacy of hip arthroscopy.This study aimed to translate the iHOT12 questionnaire into Korean and assess its feasibility, internal consistency, and validity concerning the psychometric properties of the Korean version of iHOT12 (iHOT12-K). Methods: The iHOT12 questionnaire was translated into Korean and adapted culturally, following international guidelines, involving forward translation, back-translation, and reconciliation by bilingual experts to ensure cross-cultural equivalence. A cohort of 67 patients diagnosed with femoroacetabular impingement and scheduled for hip arthroscopy between November 2015 and February 2021 participated in assessing the psychometric properties of the iHOT12-K, alongside standardized questionnaires (Korean iterations of the Short Form-36 [SF-36], Hip Disability and Osteoarthritis Outcome Score [HOOS], Korean version of Hip Outcome Score [HOS-K], and modified Harris Hip Score [mHHS]). Psychometric evaluations focusing on feasibility, internal consistency (Cronbach's alpha), and convergent validity (Spearman’s rank correlation) demonstrated the reliability and relevance of iHOT12-K. Results: In the psychometric evaluation of the adapted version, 67 participants (38 men and 29 women; median age, 41 years) were enrolled, with 59 completing the iHOT12-K. The questionnaire showed excellent internal consistency (Cronbach’s alpha, 0.896) without floor or ceiling effects, indicating good feasibility. Strong convergent validity was noted between the iHOT12-K and various hip-specific questionnaires (HOOS, HOS-K, and mHHS), except for the maximal visual analog scale score, demonstrating the reliability and applicability of the iHOT12-K for clinical assessments in Korea. Conclusions The iHOT12-K has successfully undergone transcultural adaptation, demonstrating significant feasibility, internal consistency, and validity. It has been validated for use among Korean-speaking patients undergoing hip arthroscopy, proving to be a valuable tool for clinical assessments.

Objective: Biportal endoscopic transforaminal lumbar interbody fusion (BE-TLIF) is an emerging, minimally invasive technique performed under biportal endoscopic guidance. However, concerns regarding cage subsidence and sufficient fusion during BE-TLIF necessitate careful selection of an appropriate interbody cage to improve surgical outcomes. This study compared the fusion rate, subsidence, and other radiographic parameters according to the material and size of the cages used in BE-TLIF. Methods: In this retrospective cohort study, patients who underwent single-segment BE-TLIF between April 2019 and February 2023 were divided into 3 groups: group A, regular-sized three-dimensionally (3D)-printed titanium cages; group B, regular-sized polyetheretherketone cages; and group C, large-sized 3D-printed titanium cages. Radiographic parameters, including lumbar lordosis, segmental lordosis, anterior and posterior disc heights, disc angle, and foraminal height, were measured before and after surgery. The fusion rate and severity of cage subsidence were compared between the groups. Results: No significant differences were noted in the demographic data or radiographic parameters between the groups. The fusion rate on 1-year postoperative computed tomography was comparable between the groups. The cage subsidence rate was significantly lower in group C than in group A (41.9% vs. 16.7%, p=0.044). The severity of cage subsidence was significantly lower in group C (0.93±0.83) than in groups A (2.20±1.84, p=0.004) and B (1.79±1.47, p=0.048). Conclusion Cage materials did not affect the 1-year postoperative outcomes of BE-TLIF; however, subsidence was markedly reduced in large cages. Larger cages may provide more stable postoperative segments.

Objective: Biportal endoscopic transforaminal lumbar interbody fusion (BE-TLIF) is an emerging, minimally invasive technique performed under biportal endoscopic guidance. However, concerns regarding cage subsidence and sufficient fusion during BE-TLIF necessitate careful selection of an appropriate interbody cage to improve surgical outcomes. This study compared the fusion rate, subsidence, and other radiographic parameters according to the material and size of the cages used in BE-TLIF. Methods: In this retrospective cohort study, patients who underwent single-segment BE-TLIF between April 2019 and February 2023 were divided into 3 groups: group A, regular-sized three-dimensionally (3D)-printed titanium cages; group B, regular-sized polyetheretherketone cages; and group C, large-sized 3D-printed titanium cages. Radiographic parameters, including lumbar lordosis, segmental lordosis, anterior and posterior disc heights, disc angle, and foraminal height, were measured before and after surgery. The fusion rate and severity of cage subsidence were compared between the groups. Results: No significant differences were noted in the demographic data or radiographic parameters between the groups. The fusion rate on 1-year postoperative computed tomography was comparable between the groups. The cage subsidence rate was significantly lower in group C than in group A (41.9% vs. 16.7%, p=0.044). The severity of cage subsidence was significantly lower in group C (0.93±0.83) than in groups A (2.20±1.84, p=0.004) and B (1.79±1.47, p=0.048). Conclusion Cage materials did not affect the 1-year postoperative outcomes of BE-TLIF; however, subsidence was markedly reduced in large cages. Larger cages may provide more stable postoperative segments.

Background: The International Hip Outcome Tool 12 (iHOT12), which is now widely adopted in clinical settings, has been established as reliable, valid, and responsive, positioning as a critical evaluation tool globally to gauge the efficacy of hip arthroscopy.This study aimed to translate the iHOT12 questionnaire into Korean and assess its feasibility, internal consistency, and validity concerning the psychometric properties of the Korean version of iHOT12 (iHOT12-K). Methods: The iHOT12 questionnaire was translated into Korean and adapted culturally, following international guidelines, involving forward translation, back-translation, and reconciliation by bilingual experts to ensure cross-cultural equivalence. A cohort of 67 patients diagnosed with femoroacetabular impingement and scheduled for hip arthroscopy between November 2015 and February 2021 participated in assessing the psychometric properties of the iHOT12-K, alongside standardized questionnaires (Korean iterations of the Short Form-36 [SF-36], Hip Disability and Osteoarthritis Outcome Score [HOOS], Korean version of Hip Outcome Score [HOS-K], and modified Harris Hip Score [mHHS]). Psychometric evaluations focusing on feasibility, internal consistency (Cronbach's alpha), and convergent validity (Spearman’s rank correlation) demonstrated the reliability and relevance of iHOT12-K. Results: In the psychometric evaluation of the adapted version, 67 participants (38 men and 29 women; median age, 41 years) were enrolled, with 59 completing the iHOT12-K. The questionnaire showed excellent internal consistency (Cronbach’s alpha, 0.896) without floor or ceiling effects, indicating good feasibility. Strong convergent validity was noted between the iHOT12-K and various hip-specific questionnaires (HOOS, HOS-K, and mHHS), except for the maximal visual analog scale score, demonstrating the reliability and applicability of the iHOT12-K for clinical assessments in Korea. Conclusions The iHOT12-K has successfully undergone transcultural adaptation, demonstrating significant feasibility, internal consistency, and validity. It has been validated for use among Korean-speaking patients undergoing hip arthroscopy, proving to be a valuable tool for clinical assessments.

Background: The International Hip Outcome Tool 12 (iHOT12), which is now widely adopted in clinical settings, has been established as reliable, valid, and responsive, positioning as a critical evaluation tool globally to gauge the efficacy of hip arthroscopy.This study aimed to translate the iHOT12 questionnaire into Korean and assess its feasibility, internal consistency, and validity concerning the psychometric properties of the Korean version of iHOT12 (iHOT12-K). Methods: The iHOT12 questionnaire was translated into Korean and adapted culturally, following international guidelines, involving forward translation, back-translation, and reconciliation by bilingual experts to ensure cross-cultural equivalence. A cohort of 67 patients diagnosed with femoroacetabular impingement and scheduled for hip arthroscopy between November 2015 and February 2021 participated in assessing the psychometric properties of the iHOT12-K, alongside standardized questionnaires (Korean iterations of the Short Form-36 [SF-36], Hip Disability and Osteoarthritis Outcome Score [HOOS], Korean version of Hip Outcome Score [HOS-K], and modified Harris Hip Score [mHHS]). Psychometric evaluations focusing on feasibility, internal consistency (Cronbach's alpha), and convergent validity (Spearman’s rank correlation) demonstrated the reliability and relevance of iHOT12-K. Results: In the psychometric evaluation of the adapted version, 67 participants (38 men and 29 women; median age, 41 years) were enrolled, with 59 completing the iHOT12-K. The questionnaire showed excellent internal consistency (Cronbach’s alpha, 0.896) without floor or ceiling effects, indicating good feasibility. Strong convergent validity was noted between the iHOT12-K and various hip-specific questionnaires (HOOS, HOS-K, and mHHS), except for the maximal visual analog scale score, demonstrating the reliability and applicability of the iHOT12-K for clinical assessments in Korea. Conclusions The iHOT12-K has successfully undergone transcultural adaptation, demonstrating significant feasibility, internal consistency, and validity. It has been validated for use among Korean-speaking patients undergoing hip arthroscopy, proving to be a valuable tool for clinical assessments.

Objective: Biportal endoscopic transforaminal lumbar interbody fusion (BE-TLIF) is an emerging, minimally invasive technique performed under biportal endoscopic guidance. However, concerns regarding cage subsidence and sufficient fusion during BE-TLIF necessitate careful selection of an appropriate interbody cage to improve surgical outcomes. This study compared the fusion rate, subsidence, and other radiographic parameters according to the material and size of the cages used in BE-TLIF. Methods: In this retrospective cohort study, patients who underwent single-segment BE-TLIF between April 2019 and February 2023 were divided into 3 groups: group A, regular-sized three-dimensionally (3D)-printed titanium cages; group B, regular-sized polyetheretherketone cages; and group C, large-sized 3D-printed titanium cages. Radiographic parameters, including lumbar lordosis, segmental lordosis, anterior and posterior disc heights, disc angle, and foraminal height, were measured before and after surgery. The fusion rate and severity of cage subsidence were compared between the groups. Results: No significant differences were noted in the demographic data or radiographic parameters between the groups. The fusion rate on 1-year postoperative computed tomography was comparable between the groups. The cage subsidence rate was significantly lower in group C than in group A (41.9% vs. 16.7%, p=0.044). The severity of cage subsidence was significantly lower in group C (0.93±0.83) than in groups A (2.20±1.84, p=0.004) and B (1.79±1.47, p=0.048). Conclusion Cage materials did not affect the 1-year postoperative outcomes of BE-TLIF; however, subsidence was markedly reduced in large cages. Larger cages may provide more stable postoperative segments.

Background: The International Hip Outcome Tool 12 (iHOT12), which is now widely adopted in clinical settings, has been established as reliable, valid, and responsive, positioning as a critical evaluation tool globally to gauge the efficacy of hip arthroscopy.This study aimed to translate the iHOT12 questionnaire into Korean and assess its feasibility, internal consistency, and validity concerning the psychometric properties of the Korean version of iHOT12 (iHOT12-K). Methods: The iHOT12 questionnaire was translated into Korean and adapted culturally, following international guidelines, involving forward translation, back-translation, and reconciliation by bilingual experts to ensure cross-cultural equivalence. A cohort of 67 patients diagnosed with femoroacetabular impingement and scheduled for hip arthroscopy between November 2015 and February 2021 participated in assessing the psychometric properties of the iHOT12-K, alongside standardized questionnaires (Korean iterations of the Short Form-36 [SF-36], Hip Disability and Osteoarthritis Outcome Score [HOOS], Korean version of Hip Outcome Score [HOS-K], and modified Harris Hip Score [mHHS]). Psychometric evaluations focusing on feasibility, internal consistency (Cronbach's alpha), and convergent validity (Spearman’s rank correlation) demonstrated the reliability and relevance of iHOT12-K. Results: In the psychometric evaluation of the adapted version, 67 participants (38 men and 29 women; median age, 41 years) were enrolled, with 59 completing the iHOT12-K. The questionnaire showed excellent internal consistency (Cronbach’s alpha, 0.896) without floor or ceiling effects, indicating good feasibility. Strong convergent validity was noted between the iHOT12-K and various hip-specific questionnaires (HOOS, HOS-K, and mHHS), except for the maximal visual analog scale score, demonstrating the reliability and applicability of the iHOT12-K for clinical assessments in Korea. Conclusions The iHOT12-K has successfully undergone transcultural adaptation, demonstrating significant feasibility, internal consistency, and validity. It has been validated for use among Korean-speaking patients undergoing hip arthroscopy, proving to be a valuable tool for clinical assessments.

Objective: Biportal endoscopic transforaminal lumbar interbody fusion (BE-TLIF) is an emerging, minimally invasive technique performed under biportal endoscopic guidance. However, concerns regarding cage subsidence and sufficient fusion during BE-TLIF necessitate careful selection of an appropriate interbody cage to improve surgical outcomes. This study compared the fusion rate, subsidence, and other radiographic parameters according to the material and size of the cages used in BE-TLIF. Methods: In this retrospective cohort study, patients who underwent single-segment BE-TLIF between April 2019 and February 2023 were divided into 3 groups: group A, regular-sized three-dimensionally (3D)-printed titanium cages; group B, regular-sized polyetheretherketone cages; and group C, large-sized 3D-printed titanium cages. Radiographic parameters, including lumbar lordosis, segmental lordosis, anterior and posterior disc heights, disc angle, and foraminal height, were measured before and after surgery. The fusion rate and severity of cage subsidence were compared between the groups. Results: No significant differences were noted in the demographic data or radiographic parameters between the groups. The fusion rate on 1-year postoperative computed tomography was comparable between the groups. The cage subsidence rate was significantly lower in group C than in group A (41.9% vs. 16.7%, p=0.044). The severity of cage subsidence was significantly lower in group C (0.93±0.83) than in groups A (2.20±1.84, p=0.004) and B (1.79±1.47, p=0.048). Conclusion Cage materials did not affect the 1-year postoperative outcomes of BE-TLIF; however, subsidence was markedly reduced in large cages. Larger cages may provide more stable postoperative segments.