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Niu Y, Li Z, Chen Z, Zheng Y, Zhang Z, Zhang Z, Ma J, Dong J. The tibial capsular reflection and septum in posterior compartment are safe and reliable soft-tissue landmark for tibial tunnel drilling in posterior cruciate ligament reconstruction. Knee Surg Sports Traumatol Arthrosc 2024. [PMID: 38651571 DOI: 10.1002/ksa.12202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 04/03/2024] [Accepted: 04/08/2024] [Indexed: 04/25/2024]
Abstract
PURPOSE To investigate the validity of using tibial capsular reflection and septum in the posterior compartment as landmark during posterior cruciate ligament (PCL) reconstruction (PCLR). METHODS Anatomic measurements were obtained for 12 fresh human cadaveric knee specimens to observe the spatial position of the tibial insertion of the PCL in relation to the posterior septum and the capsular reflection in the posterior compartment. Sixty patients who underwent reconstruction of the PCL between 2020 and 2023 were also retrospectively investigated. The tibial tunnel was replaced in all patients using the same method (with reference to the tibial capsular reflection and the posterior septum). The placement of the tibial tunnel was assessed using X-ray fluoroscopy intraoperatively and computed tomography and three-dimensional reconstruction postoperatively. RESULTS All fibres in the tibial insertion of the PCL in the 12 cadaveric specimens were located in the posteromedial compartment, adjacent to the posterior septum. The inferior border of the PCL insertion is adjacent to the tibial capsular reflection, which is attached at the champagne glass drop-off of the posterior tibia. In our previous cases, none of the patients experienced postoperative or intraoperative complications such as neurovascular injury, and the angle between the pin and the PCL facet was 93.1 ± 3.9° as measured on intraoperative radiographs. The mean distance from the centre of the tibial tunnel outlet to the inferior border of the PCL insertion was 5.6 ± 1.1 mm, and the distance from the centre of the tibial tunnel outlet to the outer border of the PCL insertion as a percentage of the length of the inferior border of PCL insertion was 42.2 ± 6.3%. CONCLUSION The tibial capsular reflection and septum in the posterior compartment are safe and reliable soft-tissue landmark for tibial tunnel drilling in PCLR. LEVEL OF EVIDENCE Level Ⅳ.
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Affiliation(s)
- Yingzhen Niu
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zhikuan Li
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zhen Chen
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yi Zheng
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zhenfeng Zhang
- Department of Orthopaedic Surgery, Tiemenguan People's Hospital, Xinjiang, China
| | - Zhuangdai Zhang
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jun Ma
- Department of Hebei Medical University, Shijiazhuang, China
| | - Jiangtao Dong
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
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Lee SJ, Kim JY, Sim YJ. Effects of accelerated rehabilitation exercise on quadriceps femoris and postural stability after anterior versus posterior cruciate ligament reconstruction. J Exerc Rehabil 2023; 19:293-298. [PMID: 37928831 PMCID: PMC10622931 DOI: 10.12965/jer.2346378.189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 08/28/2023] [Indexed: 11/07/2023] Open
Abstract
This study aimed to investigate the effect of a 12-week accelerated rehabilitation exercise program on isokinetic strength and dynamic balance ability of thighs in 20 adult men who underwent anterior cruciate ligament reconstruction (ACLR) or posterior cruciate ligament reconstruction (PCLR) and to analyze intergroup differences in recovery patterns. In this study, we examined 10 patients who underwent ACLR and 10 who underwent PCLR. These patients participated in an accelerated rehabilitation exercise program 5 times weekly for 12 weeks. The participants' isokinetic strength, muscular endurance, and dynamic balance ability of the femoral muscles were measured before and 12 weeks after reconstruction surgery. Isokinetic knee muscle function showed no significant difference between the ACLR and PCLR groups at 60°/sec. Both the groups demonstrated significant increases in muscle strength between the flexors and extensors. However, a between-group difference was noted in knee muscular endurance at 180°/sec, with ACLR patients showing significant differences between extensors and flexors, unlike PCLR patients. Assessment of the dynamic balance ability revealed that overall knee stability did not significantly differ between groups, and both the ACLR and PCLR groups exhibited improved dynamic balance ability. However, significant differences were found in anteroposterior and left-right stabilities. Patients who underwent ACLR had significantly improved anteroposterior and left-right stability, wherever patients who underwent PCLR showed no significant difference. This accelerated rehabilitation exercise program improved the muscle strength and muscular endurance of patients who underwent ACLR and PCLR, suggesting its potential efficacy in recovering dynamic balance ability, particularly after ACLR.
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Affiliation(s)
- Seok-Joo Lee
- Anam Hospital, Korea University College of Medicine, Seoul,
Korea
| | - Jee-Youn Kim
- School of Global Sport Studies, Korea University, Sejong,
Korea
| | - Young-Je Sim
- Department of Physical Education, Kunsan National University, Gunsan,
Korea
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Park SY, Nam HS, Ho JPY, Tu NT, Lee YS. Association Between Tunnel Position, Tunnel Angle, Graft Signal Intensity, and Graft Thickness in the Reconstructed Posterior Cruciate Ligament. Orthop J Sports Med 2023; 11:23259671231168893. [PMID: 37435427 PMCID: PMC10331204 DOI: 10.1177/23259671231168893] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 02/13/2023] [Indexed: 07/13/2023] Open
Abstract
Background An appropriate tunnel position, tunnel angle, and tunnel-graft angle are important factors for maintaining the stability and mechanical properties of a posterior cruciate ligament (PCL) graft. Purpose To evaluate the association between tunnel position, tunnel angle, graft signal intensity ratio (SIR), and graft thickness after remnant-preserving PCL reconstruction. Study Design Cross-sectional study; Level of evidence, 3. Methods Included were patients who had undergone remnant-preserving single-bundle PCL reconstruction using a tibialis anterior allograft between March 2014 and September 2020 and who had minimum 12-month postoperative magnetic resonance imaging scans. Tunnel position and angle were evaluated via 3-dimensional computed tomography, and their association with graft SIR on both the femoral and the tibial sides was determined. Graft thickness and SIR at 3 areas of the graft were evaluated and compared, and their association with tunnel-graft angle was also determined. Results Overall, 50 knees (50 patients; 43 male, 7 female) were included. The mean time to postoperative magnetic resonance imaging was 25.8 ± 15.8 months. The mean SIR of the graft's midportion was higher compared with that of the proximal and distal portions (P = .028 and P < .001, respectively), and the SIR of the proximal portion was higher compared with that of the distal portion (P = .002). The femoral tunnel-graft angle was more acute than the tibial tunnel-graft angle (P = .004). A more anteriorly and distally located femoral tunnel led to a less acute femoral tunnel-graft angle (P = .005) and a decreased SIR of the proximal portion (P = .040), and a more laterally located tibial tunnel was associated with a less acute tibial tunnel-graft angle (P = .024) and a reduced SIR of the distal portion (P = .044). The mean thicknesses of the graft's midportion and distal portion were larger than that of the proximal portion (P < .001). The SIR of the graft's midportion was positively correlated with its thickness (r = 0.321; P = .023). Conclusion The SIR of the proximal portion of the graft around the femoral tunnel was higher than that of the distal portion around the tibial tunnel. An anteriorly and distally positioned femoral tunnel and a laterally positioned tibial tunnel resulted in less acute tunnel-graft angles that were associated with decreased signal intensity.
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Affiliation(s)
- Seong Yun Park
- Department of Orthopedic Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Hee Seung Nam
- Department of Orthopedic Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Jade Pei Yuik Ho
- Department of Orthopedic Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Nguyen Thanh Tu
- Department of Orthopedic Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Yong Seuk Lee
- Department of Orthopedic Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
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D'Ambrosi R, Hallé A, Hardy A. Good clinical and radiological results following remnant-preserving posterior cruciate ligament reconstruction: a systematic review. Knee Surg Sports Traumatol Arthrosc 2022; 31:2418-2432. [PMID: 36208342 PMCID: PMC10183434 DOI: 10.1007/s00167-022-07192-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 09/30/2022] [Indexed: 11/06/2022]
Abstract
PURPOSE The objective of this systematic literature review was to report the results and complications of recent remnant preservation techniques in posterior cruciate ligament (PCL) reconstruction. METHODS A systematic review was conducted based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Two independent reviewers searched the PubMed, Scopus, Embase, and Cochrane Library databases using the terms "posterior cruciate ligament" or "PCL" and "remnant preserving." The outcome measures extracted from the studies were the Lysholm score, the International Knee Documentation Committee's (IKDC) subjective and objective scores, Tegner scores, Orthopädische Arbeitsgruppe Knie (OAK) rate of return to sports, and rate of complications. Data were also extracted from studies that used stress radiographs to perform a quantitative assessment of the preoperative and postoperative anteroposterior stability. RESULTS The systematic review included 13 studies. The patient cohort of consisted of 643 participants (544 [84.6%] men and 99 [15.4%] women) with a mean age of 32.9 ± 4.0 years. The mean postoperative follow-up was 34.5 ± 10.9 months (range: 24-96 months), while the mean time from injury to surgery was 14.4 ± 9.9 months (range: 0-240 months). All studies reported clinically significant improvement at final follow-up, as evident from the measured subjective and objective IKDC scores, Lysholm score, Tegner score, and OAK rate. Only three studies reported return to sports activity, with a mean percentage of 90.8% (99/109). All studies showed a significant improvement in posterior translation, from 11.5 ± 1.2 mm to 3.3 ± 1.1 mm, using radiography (side-to-side difference). This systematic review revealed 13 (2.0%) failures and 33 (5.1%) minor complications: 10 (1.6%) cases of stiffness, 21 (4.9%) screws removal, 1 (0.2%) injury of the peroneal nerve, and 1 (0.2%) fibular fracture. CONCLUSIONS With the currently available data, all studies included in the review on posterior cruciate ligament reconstruction with remnant preservation demonstrated satisfactory outcomes at mid-term follow-up (> 24 months), despite varying surgical techniques and graft types, and intervals from injury to surgery. For clinical relevance, standard PCL reconstruction is a highly effective operation in terms of improvement in functional status, knee stability, quality of life, and cost effectiveness. The remnant preservation technique requires more comprehensive diagnostic assessments of the PCL remnant patterns and more complicated surgical procedures. Given the absence so far of high quality studies with long-term follow-up, the remnant-preserving techniques should be recommended only by experienced knee arthroscopic surgeons. LEVEL OF EVIDENCE Level IV. STUDY REGISTRATION reviewregistry1376- www.researchregistry.com .
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Affiliation(s)
- Riccardo D'Ambrosi
- IRCCS Istituto Ortopedico Galeazzi, Milan, Italy.
- Dipartimento di Scienze Biomediche per la Salute, Università degli Studi di Milano, Milan, Italy.
| | - Aurélien Hallé
- Service de Chirurgie Orthopedique et Traumatologique, CHU de Cochin, Paris, France
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Chen YJ, Yang CP, Ho CS, Weng CJ, Chen ACY, Hsu WH, Hsu KY, Chan YS. Midterm Outcomes After Revision Posterior Cruciate Ligament Reconstruction With a Single-Bundle Transtibial Autograft. Orthop J Sports Med 2022; 10:23259671221115423. [PMID: 35990875 PMCID: PMC9382067 DOI: 10.1177/23259671221115423] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 05/16/2022] [Indexed: 11/17/2022] Open
Abstract
Background: There is a lack of consensus regarding the optimal technique for revision
posterior cruciate ligament (PCL) reconstruction. Purpose: To evaluate midterm outcomes after revision PCL reconstruction using a
single-bundle transtibial autograft. Study Design: Case series; Level of evidence, 4. Methods: We reviewed 17 patients who underwent revision PCL reconstruction performed
in our medical center by a single surgeon from 2003 to 2016. The cohort
included 12 male and 5 female patients with a mean age of 31.3 years (range,
17-48 years). All of the patients underwent single-bundle transtibial
reconstruction using the same surgical technique and were reviewed at a
minimum of 4 years postoperatively. Preoperative and postoperative posterior
stress radiography was performed. The preoperative tibial slope and
tibiofemoral angle were also measured. Preoperative and postoperative
functional outcomes were evaluated using the International Knee
Documentation Committee (IKDC) subjective and objective scores as well as
the Lysholm score. Results: The most common factor that contributed to the failure of primary surgery was
misplaced tunnels, especially on the femoral side. There were 2 patients who
had grade 2 laxity preoperatively, and 15 patients had grade 3 laxity
preoperatively. At the latest follow-up, all 17 patients had grade 1 laxity.
On posterior stress radiography, posterior displacement improved from 10.8 ±
2.1 mm preoperatively to 2.9 ± 1.1 mm at the latest follow-up
(P < .001). The IKDC subjective score improved from
34.9 ± 6.8 preoperatively to 75.3 ± 15.7 postoperatively (P
< .001), and the Lysholm score improved from 38.1 ± 10.0 preoperatively
to 88.5 ± 7.6 postoperatively (P < .001). All patients
reached the minimal clinically important difference (MCID) for the Lysholm
score, and 94% reached the MCID for the IKDC subjective score, with 65%
reaching the Patient Acceptable Symptom State. Conclusion: According to the findings of this study, arthroscopic revision PCL
reconstruction with a single-bundle transtibial autograft offered
satisfactory outcomes at midterm follow-up.
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Affiliation(s)
- Yi-Jou Chen
- Department of Orthopedic Surgery, Division of Sports Medicine, Chang Gung Memorial Hospital, Taoyuan.,Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan
| | - Cheng-Pang Yang
- Department of Orthopedic Surgery, Division of Sports Medicine, Chang Gung Memorial Hospital, Taoyuan.,Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan.,Comprehensive Sports Medicine Center, Chang Gung Memorial Hospital, Taoyuan
| | - Chin-Shan Ho
- Graduate Institute of Sports Science, National Taiwan Sport University, Taoyuan
| | - Chun-Jui Weng
- Department of Orthopedic Surgery, Division of Sports Medicine, Chang Gung Memorial Hospital, Taoyuan.,Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan.,Comprehensive Sports Medicine Center, Chang Gung Memorial Hospital, Taoyuan
| | - Alvin Chao-Yu Chen
- Department of Orthopedic Surgery, Division of Sports Medicine, Chang Gung Memorial Hospital, Taoyuan.,Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan.,Comprehensive Sports Medicine Center, Chang Gung Memorial Hospital, Taoyuan
| | - Wei-Hsiu Hsu
- Division of Sports Medicine, Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Chiayi
| | - Kuo-Yao Hsu
- Department of Orthopedic Surgery, Division of Sports Medicine, Chang Gung Memorial Hospital, Taoyuan.,Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan.,Comprehensive Sports Medicine Center, Chang Gung Memorial Hospital, Taoyuan
| | - Yi-Sheng Chan
- Department of Orthopedic Surgery, Division of Sports Medicine, Chang Gung Memorial Hospital, Taoyuan.,Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan.,Comprehensive Sports Medicine Center, Chang Gung Memorial Hospital, Taoyuan.,Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Keelung
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Operative management of isolated posterior cruciate ligament injuries improves stability and reduces the incidence of secondary osteoarthritis: a systematic review. Knee Surg Sports Traumatol Arthrosc 2022; 30:1733-1743. [PMID: 34505176 DOI: 10.1007/s00167-021-06723-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 08/24/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE To evaluate the evidence for operative and non-operative management of isolated posterior cruciate ligament (PCL) injuries. METHODS Using Pubmed, EMBASE and Cochrane databases, a systematic review was conducted of studies investigating the treatment of isolated PCL injuries published until July 2020. Quality assessment was performed with the Cochrane risk of bias tool (level I), the Newcastle-Ottowa Scale (level II-III) and the National Institute of Health quality assessment tool (level IV). Clinical outcome measures included residual laxity, return to sports, patient-reported outcome measures, subsequent articular degeneration and complications. RESULTS Twenty-seven studies [23 case series, 2 case-control, 1 cohort study and 1 randomized controlled trial (RCT)] including 5197 patients (5199 knees) with a mean age of 29.5 ± 3.6 years (range 15-68) fulfilled the study requirements. Significantly less residual laxity was found after posterior cruciate ligament reconstruction (PCLR) compared to non-operative management (3.43 vs. 5.47 mm, CI: 1.84-2.23, p < 0.001). Both treatment modalities yielded satisfying functional outcomes and a high return to sports (64-77%, mean: 70.3, CI: 67.8-72.2). Osteoarthritis (OA) occurred less frequently following PCLR (21.5 vs. 44.1%, p < 0.001). CONCLUSION In the absence of level I RCTs, this systematic review suggests that surgical management for selected isolated PCL injuries is a reasonable option to consider, especially when the surgeon aims at minimizing residual laxity and presumably secondary osteoarthritis. LEVEL OF EVIDENCE IV.
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7
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Maheshwer B, Drager J, John NS, Williams BT, LaPrade RF, Chahla J. Incidence of Intraoperative and Postoperative Complications After Posterolateral Corner Reconstruction or Repair: A Systematic Review of the Current Literature. Am J Sports Med 2021; 49:3443-3452. [PMID: 33502894 DOI: 10.1177/0363546520981697] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Posterolateral corner (PLC) injuries of the knee are being increasingly recognized and treated in current orthopaedic practice. While there are numerous systematic reviews evaluating the management and outcomes after PLC injuries, there are limited data investigating complications after PLC reconstruction or repair. PURPOSE To systematically review the literature to determine the incidence of postoperative complications after the surgical treatment of PLC injury. STUDY DESIGN Systematic review; Level of evidence, 4. METHODS The Cochrane Database of Systematic Reviews, the Cochrane Central Register of Controlled Trials, PubMed (2008-2019), Embase (2008-2019), and MEDLINE (2008-2019) were queried for literature reporting on PLC reconstruction or repair, with or without concomitant ligamentous or meniscal surgery. Data including type of surgery performed, concomitant procedures, and follow-up time were extracted. Complications recorded included intra- and postoperative complications. RESULTS After the intra- and postoperative complication data of 60 studies (1747 cases) were combined, surgical management of PLC injuries was associated with an intraoperative complication rate of 0.34% (range, 0%-2.8%) and a postoperative complication rate of 20% (range, 0%-51.2%). The most common postoperative complication was arthrofibrosis (range, 0%-20%). The overall infection rate was 1.3% (range, 0%-10%). Four cases of postoperative common peroneal nerve palsy were reported. Failure of reconstruction or repair was reported in 164 (9.4%) of all cases examined (range, 0%-37.1%). CONCLUSION Although the intraoperative rate of complications during PLC reconstructions is low, postoperative complications rates of 20% can be expected, including arthrofibrosis, infection, and neurovascular injury. PLC structures repaired or reconstructed failed in 9.4% of the cases.
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Affiliation(s)
| | - Justin Drager
- Tufts University Medical Center, Boston, Massachusetts, USA
| | - Nalin S John
- University of Illinois College of Medicine at Peoria, Peoria, Illinois, USA
| | | | | | - Jorge Chahla
- Rush University Medical Center, Chicago, Illinois, USA
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8
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Zhao J. Single-Bundle Anatomical Posterior Cruciate Ligament Reconstruction With Remnant Preservation. Arthrosc Tech 2021; 10:e2303-e2310. [PMID: 34754738 PMCID: PMC8556646 DOI: 10.1016/j.eats.2021.07.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 07/01/2021] [Indexed: 02/03/2023] Open
Abstract
Remnant always exists following injuries of the posterior cruciate ligament (PCL). To improve the clinical outcomes of PCL reconstruction, preservation of the remnant has long been a consideration. However, how to make the remnant-preservation technique simple and more effective is of concern. We describe a single-bundle anatomical PCL reconstruction technique with remnant preservation in which the posteromedial and posterolateral portals are used, the graft is placed at the lateral side of the remnant, and pulleys are used to facilitate graft passage at the 2 killer turns of the grafting routes. We consider introduction of this technique will provide reasonable choices in PCL reconstruction.
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Affiliation(s)
- Jinzhong Zhao
- Address correspondence to Jinzhong Zhao, M.D., Department of Sports Medicine, Shanghai Sixth People’s Hospital, Shanghai Jiao Tong University, 600 Yishan Rd., Shanghai 200233, China.
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Yang T, Zheng Z, Li Y, Wang F, Jia D, He R, He C. [Comparative study on effectiveness of posterior-posterior triangulation technique and anteroposterior approach for arthroscopic posterior cruciate ligament reconstruction]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2021; 35:823-828. [PMID: 34308588 DOI: 10.7507/1002-1892.202101101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Objective To investigate the effectiveness of the posterior-posterior triangulation technique for arthroscopic posterior cruciate ligament (PCL) reconstruction by comparing with the anteroposterior approach. Methods Retrospective analysis was performed on 40 patients who underwent arthroscopic PCL reconstruction between February 2016 and February 2020. The PCLs were reconstructed via anteroposterior approach in 20 patients (anteroposterior approach group) and posterior-posterior triangulation technique in 20 patients (posterior-posterior triangulation technique group). There was no significant difference in gender, age, cause of injury, injury side, disease duration, preoperative International Knee Documentary Committee (IKDC) score, and Lysholm score between the two groups ( P>0.05). The operation time, surgical complications, and postoperative posterior drawer test, Lysholm score, and IKDC score were recorded and compared between the two groups. Results The operation time was (65.25±10.05) minutes in the anteroposterior approach group and (56.15±8.15) minutes in the posterior-posterior triangulation technique group, and the difference was significant ( t=3.145, P=0.003). All incisions healed by first intention, and there was no complication such as vascular and nerve injuries or infection. Patients were followed up (27.05±11.95) months in the anteroposterior approach group and (21.40±7.82) months in the posterior-posterior triangulation technique group, with no significant difference ( t=1.770, P=0.085). At last follow-up, the posterior drawer tests were positive in 4 cases (3 cases of stageⅠand 1 case of stage Ⅱ) of the anteroposterior approach group and in 1 case (stageⅠ) of the posterior-posterior triangulation technique group, showing no significant difference between the two groups ( P=0.342). At last follow-up, Lysholm score and IKDC score in both groups were significantly higher than those before operation ( P<0.05). The above functional scores in the posterior-posterior triangulation technique group were significantly higher than those in the anteroposterior approach group ( P<0.05). Imaging reexamination showed that the position, shape, and tension of the grafts were well in both groups, and the grafts were covered with the synovium in the posterior-posterior triangulation technique group, the meniscofemoral ligaments were well preserved. There was no re-rupture of the reconstructed ligament during follow-up. Conclusion Compared to the anteroposterior approach, the posterior-posterior triangulation technique provides a clearer view under arthroscopy, no blind spot, sufficient operating space, and relative safety. Moreover, it is easier to retain the remnant and the meniscofemoral ligaments, and can obtain good short-term effectiveness.
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Affiliation(s)
- Tengyun Yang
- Department of Sports Medicine, the First Affiliated Hospital of Kunming Medical University, Kunming Yunnan, 650032, P.R.China
| | - Zhujun Zheng
- Department of Rehabilitation, the First Affiliated Hospital of Kunming Medical University, Kunming Yunnan, 650032, P.R.China
| | - Yanlin Li
- Department of Sports Medicine, the First Affiliated Hospital of Kunming Medical University, Kunming Yunnan, 650032, P.R.China
| | - Fuke Wang
- Department of Sports Medicine, the First Affiliated Hospital of Kunming Medical University, Kunming Yunnan, 650032, P.R.China
| | - Di Jia
- Department of Sports Medicine, the First Affiliated Hospital of Kunming Medical University, Kunming Yunnan, 650032, P.R.China
| | - Renjie He
- Department of Sports Medicine, the First Affiliated Hospital of Kunming Medical University, Kunming Yunnan, 650032, P.R.China
| | - Chuan He
- Department of Sports Medicine, the First Affiliated Hospital of Kunming Medical University, Kunming Yunnan, 650032, P.R.China
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Lee DW, Lee JK, Kwon SH, Moon SG, Cho SI, Chung SH, Kim JG. Adolescents show a lower healing rate of anterolateral ligament injury and a higher rotational laxity than adults after anterior cruciate ligament reconstruction. Knee 2021; 30:113-124. [PMID: 33894653 DOI: 10.1016/j.knee.2021.03.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 01/30/2021] [Accepted: 03/25/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND This study aimed to compare anterolateral ligament (ALL) injuries in anterior cruciate ligament (ACL) ruptures, as well as ALL healing and clinical outcomes following ACL reconstruction between adolescents and adults. METHODS This retrospective study involved 98 patients who underwent ACL reconstruction. They were divided into two groups according to age: group A (adolescents, 16-20 years of age; n = 49) and group B (adults, 21-45 years of age; n = 49). Subjective scores including ACL-Return to Sport after Injury (ACL-RSI) scale and objective tests were assessed. Follow up magnetic resonance imaging (MRI) and second-look arthroscopy was conducted at 1-year and 2-year follow up, respectively. RESULTS Good healing rate of ALL was higher in adults than in adolescents (P = 0.048). Graft tension and synovial coverage showed no significant differences between two groups. Group A showed a higher rate of high-grade pivot shift and a lower ACL-RSI at last follow up than group B (P = 0.126 and P = 0.016). Poor healing of ALL was significantly associated with lower ACL-RSI and failure to return to sports (P < 0.001 and P = 0.001). Re-rupture of the ACL graft was found in four (8.2%) and one (2.0%) of group A and B, respectively. CONCLUSIONS Adolescents showed a lower healing rate of ALL, a lower ACL-RSI, a higher rate of high-grade pivot shift than adults. Moreover, poor healing of ALL was significantly associated with a lower ACL-RSI and failure to return to sports. We suggest that adolescents need to pay more attention to the presence of ALL injury.
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Affiliation(s)
- Dhong Won Lee
- Department of Orthopaedic Surgery, KonKuk University Medical Center, Seoul, Republic of Korea
| | - Joon Kyu Lee
- Department of Orthopaedic Surgery, KonKuk University Medical Center, Seoul, Republic of Korea
| | - Sae Him Kwon
- Department of Orthopaedic Surgery, KonKuk University Medical Center, Seoul, Republic of Korea
| | - Sung Gyu Moon
- Department of Radiology, KonKuk University Medical Center, Seoul, Republic of Korea
| | - Seung Ik Cho
- Sports Medical Center, KonKuk University Medical Center, Seoul, Republic of Korea
| | - Seung Hee Chung
- Department of Orthopaedic Surgery, Cham TnTn Hospital, Seoul, Republic of Korea
| | - Jin Goo Kim
- Department of Orthopaedic Surgery, HanYang University Myongji Hospital, Goyang-si, Gyeonggi-do, Republic of Korea.
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Morris BL, Poppe T, Kim K, Barnds B, Schroeppel P, Mullen S, Tarakemeh A, Bechtold M, Vopat BG. Weightbearing Protocols After Posterolateral Corner Reconstruction: A Systematic Review. Orthop J Sports Med 2021; 9:2325967120988274. [PMID: 33796586 PMCID: PMC7975581 DOI: 10.1177/2325967120988274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 09/21/2020] [Indexed: 11/15/2022] Open
Abstract
Background Multiligamentous knee injuries with a posterolateral corner injury represent a devastating insult to the knee. Purpose To evaluate multiligamentous knee reconstruction rehabilitation programs and recommend a rehabilitation program based on a review of published outcomes studies. Study Design Systematic review; Level of evidence, 4. Methods A MEDLINE (PubMed), OVID, and Embase database search was conducted using the terms "posterolateral corner" and "rehabilitation." All articles obtained were examined to confirm their rehabilitation programs for multiligamentous knee injuries. These injuries included a posterolateral corner injury plus an isolated anterior or posterior cruciate ligament injury or a combined cruciate injury. Results Ten publications representing 245 patients with multiligamentous knee reconstruction were analyzed. Rehabilitation protocols were divided by weightbearing (WB) status: in 2 studies, patients were non-WB until postoperative 4 weeks (delayed WB; n = 61); 5 studies permitted progressive WB until postoperative 6 weeks (progressive WB; n = 123); and 3 studies allowed WB immediately after surgery (immediate WB; n = 61). No significant difference in outcome scores among the 3 WB groups was found. Arthrofibrosis requiring manipulation under anesthesia was the most common complication (11%) in the delayed WB group, followed by the immediate WB group (3%) and the progressive WB group (0%; P < .01). Overall complication rates were highest in the delayed WB group (44%), followed by the immediate and progressive WB groups (25% and 3%, respectively; P < .00001). The delayed WB group was permitted to return to sport at a mean of 10.5 months from the index procedure; the progressive WB group, at 6.0 months; and the immediate WB group, at 9.0 months (P < .05). Conclusion This review revealed no significant difference in outcome scores when comparing immediate, progressive, and delayed WB protocols. Time to permitted return to sport was not significantly different among the groups, but there existed a trend toward earlier return in the progressive WB group. Patients in the delayed and immediate WB groups experienced a higher overall complication rate. Progressive WB postoperative protocols may decrease the risk of complications without compromising outcomes; however, more research is needed to identify the optimal postoperative rehabilitation protocol, given the significant data heterogeneity currently available in the literature.
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Affiliation(s)
| | - Tanner Poppe
- University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Kenneth Kim
- Kansas City University of Medicine and Biosciences, Kansas City, Missouri, USA
| | - Brandon Barnds
- University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Paul Schroeppel
- University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Scott Mullen
- University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Armin Tarakemeh
- University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Megan Bechtold
- University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Bryan G Vopat
- University of Kansas Medical Center, Kansas City, Kansas, USA
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12
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Winkler PW, Zsidai B, Wagala NN, Hughes JD, Horvath A, Senorski EH, Samuelsson K, Musahl V. Evolving evidence in the treatment of primary and recurrent posterior cruciate ligament injuries, part 2: surgical techniques, outcomes and rehabilitation. Knee Surg Sports Traumatol Arthrosc 2021; 29:682-693. [PMID: 33125531 PMCID: PMC7917042 DOI: 10.1007/s00167-020-06337-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 10/13/2020] [Indexed: 01/18/2023]
Abstract
Isolated and combined posterior cruciate ligament (PCL) injuries are associated with severe limitations in daily, professional, and sports activities as well as with devastating long-term effects for the knee joint. As the number of primary and recurrent PCL injuries increases, so does the body of literature, with high-quality evidence evolving in recent years. However, the debate about the ideal treatment approach such as; operative vs. non-operative; single-bundle vs. double-bundle reconstruction; transtibial vs. tibial inlay technique, continues. Ultimately, the goal in the treatment of PCL injuries is restoring native knee kinematics and preventing residual posterior and combined rotatory knee laxity through an individualized approach. Certain demographic, anatomical, and surgical risk factors for failures in operative treatment have been identified. Failures after PCL reconstruction are increasing, confronting the treating surgeon with challenges including the need for revision PCL reconstruction. Part 2 of the evidence-based update on the management of primary and recurrent PCL injuries will summarize the outcomes of operative and non-operative treatment including indications, surgical techniques, complications, and risk factors for recurrent PCL deficiency. This paper aims to support surgeons in decision-making for the treatment of PCL injuries by systematically evaluating underlying risk factors, thus preventing postoperative complications and recurrent knee laxity. LEVEL OF EVIDENCE: V.
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Affiliation(s)
- Philipp W Winkler
- Department for Orthopaedic Sports Medicine, Klinikum Rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany.
- Department of Orthopaedic Surgery, UPMC Freddie Fu Sports Medicine Center, University of Pittsburgh, 3200 S. Water St., Pittsburgh, PA, 15203, USA.
| | - Bálint Zsidai
- Department of Orthopaedics, Sahlgrenska University Hospital, Mölndal, Sweden
| | - Nyaluma N Wagala
- Department of Orthopaedic Surgery, UPMC Freddie Fu Sports Medicine Center, University of Pittsburgh, 3200 S. Water St., Pittsburgh, PA, 15203, USA
| | - Jonathan D Hughes
- Department of Orthopaedic Surgery, UPMC Freddie Fu Sports Medicine Center, University of Pittsburgh, 3200 S. Water St., Pittsburgh, PA, 15203, USA
| | - Alexandra Horvath
- Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Eric Hamrin Senorski
- Department of Health and Rehabilitation, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Kristian Samuelsson
- Department of Orthopaedics, Sahlgrenska University Hospital, Mölndal, Sweden
- Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Volker Musahl
- Department of Orthopaedic Surgery, UPMC Freddie Fu Sports Medicine Center, University of Pittsburgh, 3200 S. Water St., Pittsburgh, PA, 15203, USA
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13
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Xiong YL, Su C, Kuang SD, Zhao X, Li YS, Xiao WF, Zhu HY, Liu WJ, Gao SG. Remnant-Preserving Posterior Cruciate Ligament Reconstruction Over Remnant Fibers Using a Figure-of-Four Position and a Posterior Trans-Septal Portal. Orthop Surg 2020; 12:2018-2025. [PMID: 33000548 PMCID: PMC7767689 DOI: 10.1111/os.12755] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/20/2020] [Accepted: 06/21/2020] [Indexed: 01/15/2023] Open
Abstract
Anatomic tunnel formation and remnant preservation are the recent trends in posterior cruciate ligament (PCL) reconstruction. However, it is difficult to observe the anatomical PCL footprint and perform the operation in the process of remnant‐preserving PCL reconstruction. This study describes a single‐bundle, transtibial PCL reconstruction technique with anatomic graft passage over the remnant PCL fibers. A femoral tunnel of PCL is created at 2 mm medial to the roof of the intercondylar notch and 3 mm proximal to the margin of the articular cartilage. The tibial insertion of PCL is observed using a figure‐of‐four position through a posterior trans‐septal portal. A tibial bone tunnel is made below the distal center portion of the tibial insertion of residual PCL fibers. The graft is passed over the PCL through the tibial bone tunnel, the space between the anterior cruciate ligament (ACL) and the residual PCL fibers, to the femoral socket and is fixed by the EndoButton and screw. This technique is able to ensure a reasonable intra‐articular length and optimal isometry. It has been applied in patients with PCL rupture and posterior instability of the knee joint, and no intraoperative or postoperative complications occurred. Our technology provides a valuable new treatment option for PCL rupture. Future comparative studies are needed to further clarify its beneficial effect.
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Affiliation(s)
- Yi-Lin Xiong
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
| | - Chao Su
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
| | - Shi-da Kuang
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
| | - Xin Zhao
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
| | - Yu-Sheng Li
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
| | - Wen-Feng Xiao
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
| | - He-Yuan Zhu
- Department of Orthopaedics, Loudi Central Hospital of Hunan, Loudi, China
| | - Wei-Jie Liu
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China
| | - Shu-Guang Gao
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, China.,Hunan Key Laboratory of Joint Degeneration and Injury, Changsha, China.,Hunan Engineering Research Center of Osteoarthritis, Changsha, China.,National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
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14
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林 奕, 蔡 武, 黄 锡, 李 箭, 李 棋. [The killer turn in the posterior cruciate ligament reconstruction: mechanism and improvement]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2020; 34:787-792. [PMID: 32538573 PMCID: PMC8171534 DOI: 10.7507/1002-1892.201907066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 01/20/2020] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To summarize the research progress of killer turn in posterior cruciate ligament (PCL) reconstruction. METHODS The literature related to the killer turn in PCL reconstruction in recent years was searched and summarized. RESULTS The recent studies show that the killer turn is considered to be the most critical cause of graft relaxation after PCL reconstruction. In clinic, this effect can be reduced by changing the fixation mode of bone tunnel, changing the orientation of bone tunnel, squeezing screw fixation, retaining the remnant, and grinding the bone at the exit of bone tunnel. But there is still a lack of long-term follow-up. CONCLUSION There are still a lot of controversies on the improved strategies of the killer turn. More detailed basic researches focusing on biomechanics to further explore the mechanism of the reconstructed graft abrasion are needed.
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Affiliation(s)
- 奕鹏 林
- 四川大学华西医院骨科(成都 610041)Department of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - 武峰 蔡
- 四川大学华西医院骨科(成都 610041)Department of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - 锡豪 黄
- 四川大学华西医院骨科(成都 610041)Department of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - 箭 李
- 四川大学华西医院骨科(成都 610041)Department of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - 棋 李
- 四川大学华西医院骨科(成都 610041)Department of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
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15
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Lee DW, Kim JG, Kim HT, Cho SI. Evaluation of Anterolateral Ligament Healing After Anatomic Anterior Cruciate Ligament Reconstruction. Am J Sports Med 2020; 48:1078-1087. [PMID: 32176530 DOI: 10.1177/0363546520908805] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Few studies have reported the healing process of anterolateral ligament (ALL) injuries. PURPOSE/HYPOTHESIS This study investigated the healing status of ALL injuries after primary anterior cruciate ligament (ACL) reconstruction (ACLR). Additionally, we investigated the association between the healing status of ALL injuries and associated lesions such as osseous lesions and meniscal tears occurring at the time of an ACL rupture. We hypothesized that acute ALL injuries show a high rate (more than two-thirds) of healing at the 1-year follow-up after ACLR and that concomitant lesions observed at the time of an ACL rupture affect the healing status of the ALL. STUDY DESIGN Case-control study; Level of evidence, 3. METHODS We retrospectively investigated patients with ALL injuries who underwent primary ACLR between March 2015 and February 2017. Using magnetic resonance imaging (MRI), we evaluated the features of ALL injuries and concomitant lesions, and MRI was performed at the 1-year follow-up to assess the healing status of the ALL. We investigated the association between the healing status of the ALL and concomitant lesions observed at the time of an ACL rupture. A subjective assessment was performed using the Lysholm score, International Knee Documentation Committee subjective score, and Tegner activity scale. Objective tests included an isokinetic strength assessment and functional performance testing. RESULTS With respect to the severity of ALL injuries, of 54 patients, a complete rupture occurred in 16 (29.6%) of the 54 patients and a partial rupture in 38 (70%). A significant association was observed between the severity of ALL injuries and bone contusions (lateral tibial plateau and medial tibial plateau [MTP]) and meniscus ramp lesions (Fisher exact test: P = .023, .012, and .023, respectively). Good and partial healing of the ALL occurred in 16 (29.6%) and 23 (42.6%) of 54 patients, respectively. Scar formation occurred in 12 (22.2%), and nonvisualization of the ALL was observed in 3 (5.6%) of 54 patients. Poor healing of the ALL was associated with preoperative MTP bone contusions and a high-grade pivot shift. Multivariate analysis showed that an MTP bone contusion was an independent risk factor associated with poor healing of the ALL. Among the functional tests performed, significant differences were observed between the good and poor healing groups with respect to the carioca test (P = .039). The good healing group (n = 16) showed a negative pivot shift at the last follow-up, whereas 5 (13.2%) of the patients from the poor healing group (n = 38) showed a positive pivot shift, including 2 (5.3%) with a high-grade pivot shift. CONCLUSION Approximately 70% of acute ALL injuries showed poor healing at the 1-year follow-up. Poor healing of ALL injuries was significantly associated with preoperative MTP bone contusions and a high-grade pivot shift. Therefore, a careful assessment of posteromedial bone contusions at the time of an ACL rupture is warranted, particularly in patients with a high-grade pivot shift.
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Affiliation(s)
- Dhong Won Lee
- Department of Orthopaedic Surgery and Sports Medicine, Konkuk University Medical Center, Seoul, Republic of Korea
| | | | - Hyun Tae Kim
- Department of Orthopaedic Surgery and Sports Medicine, Konkuk University Medical Center, Seoul, Republic of Korea
| | - Seung Ik Cho
- Sports Medical Center, Konkuk University Medical Center, Seoul, Republic of Korea
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16
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Return to Sports and Clinical Outcomes After Arthroscopic Anatomic Posterior Cruciate Ligament Reconstruction With Remnant Preservation. Arthroscopy 2019; 35:2658-2668.e1. [PMID: 31402225 DOI: 10.1016/j.arthro.2019.03.061] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 03/29/2019] [Accepted: 03/30/2019] [Indexed: 02/02/2023]
Abstract
PURPOSE To evaluate the clinical outcomes of transtibial posterior cruciate ligament reconstruction (PCLR) with remnant preservation in highly active patients and to investigate the rate of return to sports (RTS), quality of sports activities, and patient satisfaction. METHODS Patients with a Tegner activity scale of >5 who underwent isolated PCLR from 2013 to 2016 with minimum 2-year follow-up were retrospectively reviewed. Single-bundle PCLR was performed using fresh frozen allograft irradiated with 50 kGy. Subjective assessments included the Lysholm score, subjective International Knee Documentation Committee score, and Tegner activity scale. A questionnaire elicited information associated with RTS and satisfaction. Functional tests included isokinetic muscle strength and single-leg hop tests. RESULTS We evaluated 52 patients, with a mean (± standard deviation) follow-up duration of 29.5 ± 8.6 months. The subjective assessments and functional tests significantly improved postoperatively (all P < .001). Mean time to return to full sports activity was 9.7 ± 5.1 months. Thirty-eight (73.1%) and 45 (86.5%) patients could return to previous sports activities at 9 and 24 months, respectively. A sports-experience questionnaire indicated that 48% and 69.2% of the patients were participating with unlimited effort and performance, respectively, and no pain at 9 and 24 months. Multivariate analysis indicated that extensor deficit (odds ratio [OR] 4.2, 95% confidence interval [CI] 1.342 to 17.839), flexor deficit at 60°/s (OR 3.8, 95% CI 1.081 to 14.476), Limb Symmetry Index (%) for the single-leg vertical jump test (OR 2.2, 95% CI 1.212 to 9.227), and satisfaction (OR 2.8, 95% CI 1.186 to 10.281) were significantly associated with failure of not returning to preinjury sports activity levels at the 9-month follow-up. CONCLUSIONS Arthroscopic anatomic PCLR with remnant preservation showed high rates of RTS and high patient satisfaction, as well as satisfactory clinical results in highly active patients. This surgical technique could be an effective treatment for grade III posterior cruciate ligament injury in highly active patients. LEVEL OF EVIDENCE Level IV, therapeutic case series.
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17
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Devitt BM, Dissanayake R, Clair J, Napier RJ, Porter TJ, Feller JA, Webster KE. Isolated Posterior Cruciate Reconstruction Results in Improved Functional Outcome but Low Rates of Return to Preinjury Level of Sport: A Systematic Review and Meta-analysis. Orthop J Sports Med 2018; 6:2325967118804478. [PMID: 30386804 PMCID: PMC6204629 DOI: 10.1177/2325967118804478] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Background: Although isolated posterior cruciate ligament reconstruction (PCLR) has become a more frequently performed procedure, reports of functional outcomes and return-to-sport (RTS) rates to support its use are still limited. Purpose: To systematically review the literature to determine the rates of RTS and the functional outcomes of patients after isolated PCLR. Study Design: Systematic review: Level of evidence, 4. Methods: Two reviewers independently searched 5 databases for patient-based clinical studies with a minimum 2-year follow-up that analyzed functional outcome and RTS following isolated PCLR. Studies with multiligament knee reconstruction were excluded. Risk of bias was performed with a modified Downs and Black checklist. The primary outcomes were Tegner and Lysholm scores, rates of RTS, and International Knee Documentation Committee (IKDC) subjective scores. Secondary outcomes were IKDC objective scores, instrumented knee laxity assessment, and Telos radiographic analysis. Where feasible, these data were pooled via a random effects meta-analysis model. Results: Of the 240 titles identified, 14 studies were included. The median time from injury to surgery was 10.6 months (range, 6 weeks–21 years). The pooled mean postoperative Tegner and Lysholm scores were 5.7 (95% CI, 5.4-6.0) and 87.8 (95% CI, 85.6-90.0), respectively, following isolated PCLR; the pooled effect size between pre- and postoperative values was 2.8 (95% CI, 1.6-4.0) and 3.7 (95% CI, 2.6-4.9), respectively. An RTS rate of 44% (95% CI, 23%-66%) was identified. IKDC subjective scores improved to a pooled mean of 73.5 (95% CI, 62.8-84.1), with an effect size of 3.0 (95% CI, 0.4-5.6). The proportion of patients with postoperative IKDC objective scores of grade A/B was 82%. The pooled postoperative KT-1000/KT-2000 side-to-side difference was 3.4 mm (95% CI, 2.5-4.3 mm), with an effect size of 2.8 (95% CI, 1.1-4.5). The pooled postoperative Telos side-to-side difference measurement was 3.5 mm (95% CI, 2.8-4.3 mm), with an effect size of 3.9 (95% CI, 3.3-4.5). Conclusion: The results of this review demonstrate that while isolated PCLR results in a significant improvement in functional outcome scores and improved knee laxity, there is a low rate of return to preinjury level of sport. The prolonged period from injury to surgery might reduce functional improvement and RTS following reconstruction. Therefore, comparison of the outcomes of isolated PCLR and nonoperative treatment is impracticable owing to the potential for selection bias.
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Affiliation(s)
- Brian M Devitt
- OrthoSport Victoria, Epworth Healthcare, Melbourne, Australia
| | | | - Joseph Clair
- OrthoSport Victoria, Epworth Healthcare, Melbourne, Australia
| | | | | | - Julian A Feller
- OrthoSport Victoria, Epworth Healthcare, Melbourne, Australia
| | - Kate E Webster
- School of Allied Health, La Trobe University, Melbourne, Australia
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18
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Liu S, Sun Y, Chen T, Tao H, Hu Y, Chen S, Chen J. Time From Injury to Surgery Affects Graft Maturation Following Posterior Cruciate Ligament Reconstruction With Remnant Preservation: A Magnetic Resonance Imaging-Based Study. Arthroscopy 2018; 34:2846-2854. [PMID: 30195957 DOI: 10.1016/j.arthro.2018.05.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 05/19/2018] [Accepted: 05/22/2018] [Indexed: 02/08/2023]
Abstract
PURPOSE To evaluate the clinical outcomes and graft maturation following posterior cruciate ligament reconstruction (PCLR) with preserved remnant and further analyze the correlated factors affecting graft maturation. METHODS Consecutive patients who underwent unilateral single-bundle PCLR with remnant preservation from January 2011 to October 2014 by the same senior doctor using tibialis anterior allografts and same surgical technique were included. At a follow-up of more than 2 years, range of motion (ROM) and posterior laxity assessed by posterior drawer test and the KT-1000 arthrometer were examined. Tegner, Lysholm, and International Knee Documentation Committee scores were evaluated. The graft maturation was assessed by a 3.0-T magnetic resonance imaging. Overall correlation analyses and multivariate regression analysis were performed to identify correlated factors of graft maturation, and then subgroups were divided and analyzed according to significant risk factor. RESULTS Forty-three (84.3%) of 51 enrolled patients were successfully followed up (38.4 months, 24-54 months). All clinical scores improved significantly, and there were no complications. The results of KT-1000 difference revealed significant decline of posterior laxity (9.4 ± 1.5 vs 2.2 ± 1.5 mm; P < .001). The MRI evaluation confirmed no ligament retears. Both correlation and regression analyses showed time from injury to surgery had a positive, statistically significant weak correlation with the signal intensity score (R = 0.38, P = .012; coefficient = 0.10; P = .036). Subgroup (group 1: time from injury to surgery <3 months; group 2: 3-6 months; group 3: 6-12 months; group 4: ≥12 months) analysis showed there were no significant differences of clinical outcomes between subgroups, while MRI signal intensity was significantly lower in the group with shorter time from injury to surgery (P = .02). CONCLUSIONS The remnant-preserved PCLR resulted in satisfactory clinical outcomes and graft maturation at a mean follow-up of 38.4 months. The time from injury to surgery showed a weak positive correlation with postoperative graft signal intensity on MRI. LEVEL OF EVIDENCE Level III, retrospective comparative study.
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Affiliation(s)
- Shaohua Liu
- Department of Sports Medicine, Huashan Hospital, Shanghai, People's Republic of China
| | - Yaying Sun
- Department of Sports Medicine, Huashan Hospital, Shanghai, People's Republic of China
| | - Tianwu Chen
- Department of Sports Medicine, Huashan Hospital, Shanghai, People's Republic of China
| | - Hongyue Tao
- Department of Radiology, Huashan Hospital, Shanghai, People's Republic of China
| | - Yiwen Hu
- Department of Radiology, Huashan Hospital, Shanghai, People's Republic of China
| | - Shiyi Chen
- Department of Sports Medicine, Huashan Hospital, Shanghai, People's Republic of China
| | - Jiwu Chen
- Department of Sports Medicine, Huashan Hospital, Shanghai, People's Republic of China.
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Abstract
PURPOSE OF REVIEW Posterior cruciate ligament (PCL) injuries are relatively uncommon injuries. As such, there is a dearth of high-quality studies in the literature examining the operative management of PCL injuries and a lack of clear consensus on what the optimal method should be. The goal of this review was to conduct a comprehensive evaluation of recent literature and provide an evidence-based algorithm to optimize surgical decision-making and outcomes for PCL reconstruction. RECENT FINDINGS Recent literature confirms that transtibial PCL reconstruction is a reliable and reproducible method to manage PCL injuries and results in satisfactory patient outcomes. However, there does not yet appear to be enough new, compelling information to conclusively determine an optimal method for surgical management. Our preferred method of management for operative PCL injuries is a single bundle transtibial PCL reconstruction, which is supported by the current body of literature. Future high-quality research studies are necessary to further guide treatment algorithms.
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20
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Posterior cruciate ligament is twisted and flat structure: new prospective on anatomical morphology. Knee Surg Sports Traumatol Arthrosc 2018; 26:31-39. [PMID: 28712026 DOI: 10.1007/s00167-017-4634-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 07/04/2017] [Indexed: 10/19/2022]
Abstract
PURPOSE This cadaveric study aimed to elucidate PCL morphology by observing the anatomical relationship with other structures and the fibre layers of the PCL in cross section for remnant preserving PCL reconstruction. METHODS Seventeen fresh-frozen cadaveric knees were studied, using the clock-face method to analyse the anatomical relationship between the PCL and Humphrey's ligament. The width and thickness of the PCL, Humphrey's and Wrisberg's ligaments were measured. The PCL was cut sharply perpendicular to the tibia shaft, and the fibre layers were observed in cross section. RESULTS The PCL was located between 12 and 4 o'clock in the right knee (8 and 12 o'clock in the left), while Humphrey's ligament was located between 2 and 4 o'clock in the right knee (8 and 10 o'clock in the left). Humphrey's ligament at femoral insertion, midsubstance and lateral meniscus insertion averaged 8.7 ± 2.3, 5.9 ± 2.1 and 6.1 ± 2.0 mm, respectively, while the thickness at each level averaged 2.0 ± 1.2, 1.6 ± 0.6 and 1.9 ± 0.6 mm. The width of the PCL at midsubstance and at medial meniscus level averaged 13.3 ± 2.0 and 11.0 ± 1.6 mm, respectively, while the thickness of the PCL averaged 5.4 ± 0.8 and 5.5 ± 1.4 mm. In cross section, multiple, interconnected layers were observed which could not be divided. The main layers at each level were aligned from the posterolateral to the anteromedial aspect and formed a C-shape at the medial meniscus level. CONCLUSION The PCL at midsubstance is flat. PCL appears as a twisted ribbon composed of many small fibres without clearly separate bundles. When remnant preserving PCL reconstruction is performed, it is necessary to take account of not only PCL morphology but also the ligaments of Humphrey and Wrisberg. These findings may affect the PCL footprint and the graft shape in the future remnant preserving PCL reconstruction.
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21
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Yoon JR, Lee DH, Ko SN, Shin YS. Proprioception in patients with posterior cruciate ligament tears: A meta-analysis comparison of reconstructed and contralateral normal knees. PLoS One 2017; 12:e0184812. [PMID: 28922423 PMCID: PMC5603168 DOI: 10.1371/journal.pone.0184812] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 08/31/2017] [Indexed: 12/02/2022] Open
Abstract
Posterior cruciate ligament (PCL) reconstruction for patients with PCL insufficiency has been associated with postoperative improvements in proprioceptive function due to mechanoreceptor regeneration. However, it is unclear whether reconstructed PCL or contralateral normal knees have better proprioceptive function outcomes. This meta-analysis was designed to compare the proprioceptive function of reconstructed PCL or contralateral normal knees in patients with PCL insufficiency. All studies that compared proprioceptive function, as assessed with threshold to detect passive movement (TTDPM) or joint position sense (JPS) in PCL reconstructed or contralateral normal knees were included. JPS was calculated by reproducing passive positioning (RPP). Five studies met the inclusion/exclusion criteria for the meta-analysis. The proprioceptive function, defined as TTDPM (95% CI: 0.25 to 0.51°; P<0.00001) and RPP (95% CI: 0.19 to 0.45°; P<0.00001), was significantly different between the reconstructed PCL and contralateral normal knees. The mean difference in angle of error between the reconstructed PCL and contralateral normal knees was 0.06° greater in TTDPM than by RPP. In addition, results from subgroup analyses, based on the starting angles and the moving directions of the knee, that evaluated TTDPM at 15° flexion to 45° extension, TTDPM at 45° flexion to 110° flexion, RPP in flexion, and RPP in extension demonstrated that mean angles of error were significantly greater, by 0.38° (P = 0.0001), 0.36° (P = 0.02), 0.36° (P<0.00001), and 0.23° (P = 0.04), respectively, in reconstructed PCL than in contralateral normal knees. The proprioceptive function of PCL reconstructed knees was decreased, compared with contralateral normal knees, as determined by both TTDPM and RPP. In addition, the amount of loss of proprioception was greater in TTDPM than in RPP, even with minute differences. Results from subgroup analysis, that evaluated the mean angles of error in moving directions through RPP, suggested that the moving direction of flexion has a significantly greater mean for angles of error than the moving direction of extension. Although the level of differences between various parameters were statistically significant, further studies are needed to determine whether the small differences (>1°) of the loss of proprioception are clinically relevant.
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Affiliation(s)
- Jung-Ro Yoon
- Department of Orthopedic Surgery, Veterans Health Service Medical Center, Seoul, Korea
| | - Dae-Hee Lee
- Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seung-Nam Ko
- Department of Orthopedic Surgery, Veterans Health Service Medical Center, Seoul, Korea
| | - Young-Soo Shin
- Department of Orthopedic Surgery, Veterans Health Service Medical Center, Seoul, Korea
- * E-mail:
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Lee DW, Choi HW, Kim JG. Arthroscopic Posterior Cruciate Ligament Reconstruction With Remnant Preservation Using a Posterior Trans-septal Portal. Arthrosc Tech 2017; 6:e1465-e1469. [PMID: 29354459 PMCID: PMC5709718 DOI: 10.1016/j.eats.2017.06.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 06/02/2017] [Indexed: 02/03/2023] Open
Abstract
We describe a surgical technique for arthroscopic posterior cruciate ligament (PCL) reconstruction with remnant preservation of the original PCL fibers using a posterior trans-septal portal approach. Using the transtibial technique and the posterior trans-septal portal approach allows good visualization of the tibial tunnel preparation, easy access to the tibial tunnel without neurovascular injury, and preservation of remnant PCL fibers. In the preparation of the tibial tunnel, we expose the PCL tibial attachment site completely, detach the posterior capsule from the PCL, and preserve the distal stump of the PCL without neurovascular injury. PCL reconstruction is performed in a way that preserves the remnant PCL fibers. We report on our surgical technique for arthroscopic PCL reconstruction preserving the original PCL fibers.
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Affiliation(s)
| | | | - Jin Goo Kim
- Address correspondence to Jin Goo Kim, M.D., Ph.D., Department of Orthopedic Surgery, Konkuk University Medical Center, 120-1, Neungdong-ro, Gwangjin-gu, Seoul 143-729, Republic of Korea.Department of Orthopedic SurgeryKonkuk University Medical Center120-1, Neungdong-roGwangjin-guSeoul143-729Republic of Korea
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23
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An anatomic and histologic study of the origin and terminal points in the anterior and posterior cruciate ligaments in rats. CURRENT ORTHOPAEDIC PRACTICE 2017. [DOI: 10.1097/bco.0000000000000503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Osti M, Benedetto KP. Hintere Kreuzbandrekonstruktion in offener und arthroskopischer tibialer Inlay-Technik. ARTHROSKOPIE 2017. [DOI: 10.1007/s00142-016-0107-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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Chernchujit B, Samart S, Na Nakorn P. Remnant-Preserving Posterior Cruciate Ligament Reconstruction: Arthroscopic Transseptal, Rod and Pulley Technique. Arthrosc Tech 2017; 6:e15-e20. [PMID: 28373934 PMCID: PMC5368042 DOI: 10.1016/j.eats.2016.08.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 08/29/2016] [Indexed: 02/03/2023] Open
Abstract
The preservation of posterior cruciate ligament (PCL) remnant augmentation was recently proposed as a technique for PCL reconstruction. The technique achieved isometry and anatomic position of the PCL graft, but it was technically difficult. The present technique is a modified transseptal technique with visualization from both posteromedial and posterolateral portals. Moreover, this rod-pulley technique could prevent the killer turn effectively. The result was anatomic remnant augmented PCL graft.
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Affiliation(s)
- Bancha Chernchujit
- Address correspondence to Bancha Chernchujit, M.D., Department of Orthopedics, Faculty of Medicine, Thammasat University, Paholyothin Road, Klong Luang, Rangsit, Pathum Thani 12121, Thailand.Department of OrthopedicsFaculty of MedicineThammasat UniversityPaholyothin RoadKlong LuangRangsitPrathumthani12121Thailand
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26
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Wang D, Yamaguchi KT, Jones MH, Miniaci A. KOOS and IKDC scales may be inadequate in evaluating patients with multiple ligament knee injuries: a systematic review. J ISAKOS 2016. [DOI: 10.1136/jisakos-2015-000038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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27
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Salim R, Salzler MJ, Bergin MA, Zheng L, Carey RE, Kfuri M, Zhang X, Harner CD. Fluoroscopic determination of the tibial insertion of the posterior cruciate ligament in the sagittal plane. Am J Sports Med 2015; 43:1142-6. [PMID: 25670837 DOI: 10.1177/0363546514568277] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Currently, placement of the tibial tunnel for arthroscopic transtibial posterior cruciate ligament (PCL) reconstruction relies on a limited arthroscopic view of the native insertion or the use of intraoperative imaging. No widely accepted method exists for intraoperative determination of PCL tibial tunnel placement, and current descriptions are cumbersome. PURPOSE To identify the center of the PCL's anatomic tibial insertion site as a percentage of the PCL facet length on a lateral radiograph of the knee so that it may be reliably located in the sagittal plane during surgical reconstruction. STUDY DESIGN Descriptive laboratory study. METHODS Twenty fresh-frozen cadaveric knees were dissected and the tibial insertions of the PCL were digitized with an optical tracing system. The digitized PCL footprints were mapped onto 3-dimensional computed tomography-acquired tibial models, and their center points were determined. A K-wire was then inserted into the center of the PCL's tibial insertion under direct visualization, a direct lateral radiograph was obtained, and the center point was measured. The center locations for both methods were defined as a percentage of PCL facet length from anterior and proximal to posterior and distal, and intraobserver and interobserver reliability was tested with 4 different observers. RESULTS The average location of the PCL center on the 3-dimensional bone model method was 71.7%±5.6% along the PCL facet from anterior/proximal to posterior/distal. In the lateral radiographic method, the center of the PCL was at an average of 69.7%±4.9% of the facet length. There was no significant difference between the percentage measurements of the 2 methods (P=.13). Interobserver reliability (κ=0.57) and intraobserver reliability (κ=0.71) were moderate to strong. CONCLUSION Locating the center of the tibial PCL insertion with fluoroscopy at a point that is 70% of the PCL tibial facet length on a true lateral radiograph is a reliable method for locating the PCL tibial insertion. CLINICAL RELEVANCE The method described in this study enables clinicians to identify the tibial location of the PCL insertion, which must be accurately determined during PCL reconstruction.
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Affiliation(s)
- Rodrigo Salim
- Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, São Paulo, Brazil
| | - Matthew J Salzler
- Department of Orthopaedic Surgery, Tufts Medical Center, Boston, Massachusetts, USA
| | - Mark A Bergin
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Liying Zheng
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Robert E Carey
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Mauricio Kfuri
- Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, São Paulo, Brazil
| | - Xudong Zhang
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, Pennsylvania, USA Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Christopher D Harner
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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28
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Osti M, Hierzer D, Krawinkel A, Hoffelner T, Benedetto KP. The predictive effect of anatomic femoral and tibial graft tunnel placement in posterior cruciate ligament reconstruction on functional and radiological outcome. INTERNATIONAL ORTHOPAEDICS 2014; 39:1181-6. [PMID: 25324225 DOI: 10.1007/s00264-014-2565-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 10/01/2014] [Indexed: 11/30/2022]
Abstract
PURPOSE Biomechanical reports have advocated anatomic graft tunnel placement for reconstruction of the posterior cruciate ligament (PCL) to restore knee joint stability and facilitate optimal functional outcome. However, in vivo investigations that correlate tunnel position to functional results are lacking so far. This study evaluates the anatomic accuracy of femoral and tibial tunnel apertures on postoperative computed tomography (CT) scans and compares these findings to subjective and objective clinical outcome parameters. METHODS After single-bundle PCL reconstruction, 29 patients were stratified into several subgroups according to the anatomic accuracy of femoral and tibial tunnel apertures measured on postoperative CT scans. A threshold value for the centres of the tunnel apertures was determined using a measurement grid system as a radiographic reference. To evaluate the functional and radiological results, visual analogue scale, International Knee Documentation Committee (IKDC), Tegner, Lysholm, Knee Injury and Osteoarthritis Outcome Score and osteoarthritis scores were obtained. RESULTS Comparison between functional outcome and tunnel position yielded a statistically significant difference for subjective IKDC score and angle segment α and for objective stability and tunnel position P3 but no statistically significant difference with respect to intercondylar depth, intercondylar height and tibial tunnel position P2. No correlation was found between anatomic tunnel position and present or progressive osteoarthritis on follow-up. Of the patients, 72 % classified their result as excellent and good and 90 % would repeat surgical treatment. CONCLUSIONS Despite a small sample size and subject to the threshold values we used, our data indicate a potentially minor effect of anatomic tunnel placement on midterm functional outcome following PCL reconstruction.
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Affiliation(s)
- Michael Osti
- Department for Trauma Surgery and Sports Traumatology, Academic Hospital Feldkirch, Feldkirch, Austria,
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