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Nabian MH, Zadegan SA, Mallet C, Neder Y, Ilharreborde B, Simon AL, Presedo A. Distal femoral osteotomy and patellar tendon advancement for the treatment of crouch gait in patients with bilateral spastic cerebral palsy. Gait Posture 2024; 110:53-58. [PMID: 38492261 DOI: 10.1016/j.gaitpost.2024.02.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 02/23/2024] [Accepted: 02/28/2024] [Indexed: 03/18/2024]
Abstract
BACKGROUND Crouch gait, or flexed knee gait, represents a common gait pattern in patients with spastic bilateral cerebral palsy (CP). Distal femoral extension and/or shortening osteotomy (DFEO/DFSO) and patellar tendon advancement (PTA) can be considered as viable options when knee flexion contractures are involved. Better outcomes have been reported after a combination of both, independently of the presence of knee extensor lag. In this study, we evaluated the clinical and kinematic outcomes of these procedures. PATIENTS AND METHODS We reviewed a cohort of 52 limbs (28 patients) who were treated for crouch gait by DFEO/DFSO alone (group 1, n = 15) or DFEO/DFSO + PTA (group 2, n = 37) as a part of single event multilevel surgery (SEMLS). The mean age at surgery was 14 years, and the mean follow-up time was 18 months. The physical examination data and three-dimensional standardized gait analysis were collected and analyzed before the surgery and postoperatively. RESULTS Overall knee range of motion improved in all limbs. The knee flexion decreased significantly in both groups at initial, mid, and terminal stance. Hip flexion significantly decreased in mid-stance for limbs in group 2. Both clinical and gait parameters were most improved in limbs who underwent DFEO/DFSO + PTA. Increased pelvic tilt was observed in both groups after surgery. CONCLUSION Although DFEO/DFSO alone was successful in correcting knee flexion contractures, PTA has helped to improve knee extensor lag and knee extension during gait. LEVEL OF EVIDENCE Therapeutic level IV.
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Affiliation(s)
- Mohammad Hossein Nabian
- Center for Orthopedic Trans-Disciplinary Applied Research, Tehran University of Medical Sciences, Tehran, Iran; Department of Pediatric Orthopedics, Robert Debré University Hospital, Paris, France
| | - Shayan Abdollah Zadegan
- Department of Neurology, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - Cindy Mallet
- Department of Pediatric Orthopedics, Robert Debré University Hospital, Paris, France
| | - Yamile Neder
- Department of Pediatric Orthopedics, Robert Debré University Hospital, Paris, France
| | - Brice Ilharreborde
- Department of Pediatric Orthopedics, Robert Debré University Hospital, Paris, France
| | - Anne Laure Simon
- Department of Pediatric Orthopedics, Robert Debré University Hospital, Paris, France
| | - Ana Presedo
- Department of Pediatric Orthopedics, Robert Debré University Hospital, Paris, France.
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Galán-Olleros M, Lerma-Lara S, Torres-Izquierdo B, Ramírez-Barragán A, Egea-Gámez RM, Hosseinzadeh P, Martínez-Caballero I. Does patella lowering as part of multilevel surgery improve knee kinematics in children with cerebral palsy and crouch gait? A meta-analysis of comparative studies. J Child Orthop 2024; 18:13-25. [PMID: 38348440 PMCID: PMC10859119 DOI: 10.1177/18632521231217542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 11/14/2023] [Indexed: 02/15/2024] Open
Abstract
Purpose To evaluate differences in knee kinematic outcomes of patellar-lowering surgery, specifically patellar tendon advancement or patellar tendon shortening, compared with no-patellar-lowering surgery in multilevel surgery for children with cerebral palsy and crouch gait. Methods Four databases were searched to retrieve studies published from inception until 2023. Three reviewers independently screened for studies with observational or randomized control designs, comparing two groups of patients with cerebral palsy and crouch gait who underwent multilevel surgery (with patellar-lowering surgery versus no-patellar-lowering surgery), where various gait analysis outcomes were reported (CRD42023450692). The risk of bias was assessed with the Risk Of Bias In Non-randomised Studies - of Interventions (ROBINS-I) tool. Results Seven studies (249 patients and 368 limbs) met the eligibility criteria. Patients undergoing patellar-lowering surgery demonstrated statistically significant improvements in knee flexion at initial contact (mean difference = -6.39; 95% confidence interval = [-10.4, -2.75]; p = 0.0006; I2 = 84%), minimum knee flexion in stance (mean difference = -14.27; 95% confidence interval = [-18.31, -10.23]; p < 0.00001; I2 = 89%), and clinical knee flexion contracture (mean difference = -5.6; 95% confidence interval = [-9.59, -1.6]; p = 0.006; I2 = 95%), with a significant increase in anterior pelvic tilt (mean difference = 2.97; 95% confidence interval = [0.58, 5.36]; p = 0.01; I2 = 15%). However, improvements in gait deviation index and decrease in peak knee flexion in swing did not reach statistical significance. Subgroup analysis reduced heterogeneity and revealed (1) greater improvement using patellar tendon shortening versus patellar tendon advancement techniques; (2) lack of knee flexion contracture improvement in high-quality or longer-term studies; (3) longer-term improvement only in minimum knee flexion in stance, with a decrease in peak knee flexion in swing; and (4) an inability to assess the potential benefit of rectus femoris procedure and hamstring preservation. Conclusions Overall, the combination of patellar-lowering surgery with multilevel surgery demonstrated superior improvements in stance-phase knee kinematics compared with multilevel surgery alone, despite an increase in anterior pelvic tilt and a longer-term knee flexion reduction during the swing phase. Level of evidence Level III, Systematic review of level III studies.
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Affiliation(s)
- María Galán-Olleros
- Neuro-Orthopaedic Unit, Orthopaedic Surgery and Traumatology Department, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
| | - Sergio Lerma-Lara
- Departament of Physiotherapy, Centro Superior de Estudios Universitarios La Salle, Universidad Autónoma de Madrid, Madrid, Spain
| | - Beltran Torres-Izquierdo
- Department of Orthopaedic Surgery, Washington University School of Medicine, Saint Louis, MO, USA
| | - Ana Ramírez-Barragán
- Neuro-Orthopaedic Unit, Orthopaedic Surgery and Traumatology Department, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
| | - Rosa M Egea-Gámez
- Neuro-Orthopaedic Unit, Orthopaedic Surgery and Traumatology Department, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
| | - Pooya Hosseinzadeh
- Department of Orthopaedic Surgery, Washington University School of Medicine, Saint Louis, MO, USA
| | - Ignacio Martínez-Caballero
- Neuro-Orthopaedic Unit, Orthopaedic Surgery and Traumatology Department, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
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Greaves H, Wright D, Eleuteri A, Ray E, Pinzone O, Bass A, Walton R, Barton G. Patellar tendon shortening surgery restores the knee extensor mechanism in flexed knee gait in children with cerebral palsy. J Orthop Sci 2024:S0949-2658(24)00005-8. [PMID: 38262799 DOI: 10.1016/j.jos.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/14/2023] [Accepted: 01/12/2024] [Indexed: 01/25/2024]
Abstract
BACKGROUND This study evaluated a patellar tendon shortening (PTS) surgical procedure that uses an overlapping repair combined with an additional Tycron non-absorbable suture to support the shortening in children with Cerebral Palsy (CP). This study aimed to outline this surgical technique and to evaluate its effectiveness in restoring the knee extensor mechanism. METHODS The sagittal plane lower limb kinematics, peak knee extensor moment, gait deviation index (GDI), localised movement deviation profile (MDP), temporospatial parameters, passive knee extension ROM, quadriceps lag, and knee extensor strength were calculated pre- and postoperatively. To determine significant differences a robust linear regression model with high breakdown point and high efficiency was fitted to the data. RESULTS In this retrospective cohort study, a total of 41 patients with CP who were treated with unilateral or bilateral PTS in isolation or as part of single event multilevel surgery (SEMLS), with a mean age of 11.1 years were included. The knee extension angle improved at initial contact (p < 0.0001), and during stance phase (p < 0.0001). The peak internal knee extensor moment decreased during early (p = 0.0014) and late stance phase (p < 0.0001). The quadriceps lag decreased (p < 0.0001) and knee extensor strength increased (p < 0.0001). The GDI improved (p < 0.0001), as well as the localised MDP for sagittal angles (p < 0.0001) and moments (p = 0.0001). Walking speed (p = 1.0) remained unchanged, but the cadence decreased (p = 0.024) and step length increased (p = 0.0001). CONCLUSIONS The knee extension angle and moment during stance phase improved significantly. The children with CP in this study showed improvements in knee extensor strength and quadriceps lag. Thereby it can be concluded that the PTS procedure was able to restore the knee extensor mechanism effectively.
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Affiliation(s)
- Henrike Greaves
- Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK; Liverpool John Moores University, Liverpool, UK.
| | - David Wright
- Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK
| | - Antonio Eleuteri
- Liverpool University Hospitals NHS Foundation Trust, Liverpool, UK
| | - Elizabeth Ray
- Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK
| | - Ornella Pinzone
- Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK
| | - Alfie Bass
- Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK
| | - Roger Walton
- Alder Hey Children's Hospital NHS Foundation Trust, Liverpool, UK
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Murakami S, Shimada M, Hara Y. Examination of Proximodistal Patellar Position in Dogs with the Stifle at Full Extension. Vet Comp Orthop Traumatol 2023; 36:199-206. [PMID: 36940719 DOI: 10.1055/s-0043-1764317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
Abstract
OBJECTIVE The aim of this study was to determine the factors related to functional patella alta, with which the proximodistal patellar position exceeds the reference range of healthy small dogs proximally when the stifle is at full extension. STUDY DESIGN Mediolateral-view radiographs of dogs weighing less than 15 kg were obtained and classified into the medial patellar luxation (MPL) and control groups. The reference range of the proximodistal patellar position was determined from the control group. In both groups, a patellar position exceeding this reference range proximally was considered functional patella alta. Multiple logistic regression analysis was performed to examine the factors related to functional patella alta. A receiver operating characteristic (ROC) curve was made for each factor. RESULTS Overall, radiographs of 127 stifles of 75 dogs were obtained. Eleven stifles in the MPL group and one stifle in the control group were determined to be functional patella alta. The factors associated with functional patella alta included a greater full extension angle of the stifle joint, longer patellar ligament, and shorter femoral trochlear length. The full extension angle of the stifle joint had the biggest area under the ROC curve. CONCLUSION Mediolateral radiographs of the stifle joint in full extension are clinically important in dogs with MPL because some dogs might have a proximally positioned patella that is recognizable only when the stifles are extended.
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Affiliation(s)
- Sawako Murakami
- Department of Veterinary Surgery, Division of Veterinary Science, Section of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Masakazu Shimada
- Department of Veterinary Surgery, Division of Veterinary Science, Section of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Yasushi Hara
- Department of Veterinary Surgery, Division of Veterinary Science, Section of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, Japan
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Shore BJ, McCarthy J, Shrader MW, Graham K, Veerkamp KM, Rutz E, Chambers H, Davids JR, Narayanan U, Novacheck TF, Pierz K, Dreher T, Rhodes J, Shilt J, Theologis T, Van Campenhout A, Kay RM. Anterior distal femoral hemiepiphysiodesis in children with cerebral palsy: Establishing surgical indications and techniques using the modified Delphi method and literature review. J Child Orthop 2023; 17:292-294. [PMID: 37288042 PMCID: PMC10242377 DOI: 10.1177/18632521231172993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/09/2023] Open
Affiliation(s)
| | - James McCarthy
- Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - M Wade Shrader
- Nemours/Alfred I. duPont Hospital for Children, Wilmington, DE, USA
| | - Kerr Graham
- The Royal Children’s Hospital, Melbourne, VIC, Australia
| | | | - Erich Rutz
- The Royal Children’s Hospital, Melbourne, VIC, Australia
| | - Hank Chambers
- Rady Children’s Hospital-San Diego, San Diego, CA, USA
| | - Jon R. Davids
- Shriners Hospitals for Children-Northern California, Sacramento, CA, USA
| | | | - Tom F Novacheck
- Gillette Children’s Specialty Healthcare, Saint Paul, MN, USA
| | | | - Thomas Dreher
- Universitats-Kinderspital Zürich, Zürich, Switzerland
| | | | | | | | | | - Robert M Kay
- Children’s Hospital Los Angeles, Los Angeles, CA, USA
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Mohan V, Ganjwala D, Singh K, Shah H. Evaluation of a technique of patellar tendon shortening to correct patella alta associated with severe crouch gait in cerebral palsy. J Pediatr Orthop B 2023; 32:87-93. [PMID: 36445353 DOI: 10.1097/bpb.0000000000000973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study was undertaken to evaluate the results of patella tendon shortening to correct patella alta in the context of surgery for the management of severe crouch gait. Our aim was to ascertain whether the corrected position of the patella and improvement of the power of the quadriceps were maintained for 4 years or more. Twenty older children (mean age: 14.2 years) with long-standing crouch gait secondary to cerebral diplegia underwent surgery to correct crouch gait that included the patellar tendon shortening. The technique for plicating the tendon differed for skeletally mature and immature patients. The length of the patellar tendon was measured by the Koshino Index. The strength of the quadriceps muscle was assessed by manual muscle testing and with a dynamometer and extensor lag, if present, was measured with a goniometer. In all 40 knees, the patella was brought to a more distal position and the position was maintained for a mean duration of 84 months (Koshino Index: preoperative 1.3 ± 0.10; 3-month postoperative 0.95 ± 0.05; final follow-up 0.95 ± 0.04). The results were the same for the techniques used for skeletally mature and immature patients. The power of the quadriceps improved [Medical Research Council (MRC) grade 3 to MRC grade 4] and the improvement was maintained. The technique of patella tendon shortening was effective in correcting patella alta and improving quadriceps power. The shortened patellar tendon did not stretch over the period of follow-up. Level of evidence: III.
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Affiliation(s)
- Vipin Mohan
- Department of Orthopedics, Amrita Institute of Medical Sciences, Kochi
| | | | - Kumar Singh
- Pediatric Orthopaedics Department, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Hitesh Shah
- Department of Orthopedics, Amrita Institute of Medical Sciences, Kochi
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Cankaya D, Akti S, Yasar NE, Karakus D, Unal KO, Karhan TE, Sezgin EA. Total Infrapatellar Fat Pad Excision Leads to Worse Isokinetic Performance in Total Knee Arthroplasty: A Randomized Controlled Trial. J Knee Surg 2022; 35:1544-1548. [PMID: 33792001 DOI: 10.1055/s-0041-1727114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
There are concerns that total infrapatellar fat pad (IPFP) excision in total knee arthroplasty (TKA) results in patellar tendon shortening due to ischemic contracture, but individual preference of the surgeon is still the main determinant between total or partial excision. The aim of this randomized controlled study was to compare isokinetic performance and clinical outcome of TKAs with total and partial excision of the IPFP. Seventy-two patients scheduled to undergo TKA for primary knee osteoarthritis by a single surgeon were randomly assigned to either total or partial excision group. Patients were evaluated preoperatively and at postoperative 1 year, with Knee Society Score (KSS) and isokinetic measurements. The physiatrist performing isokinetic tests and patients were blinded to the study. There were no significant differences between the groups in respect of age, body mass index, gender, and preoperative KSS and isokinetic performance. Postoperatively, both groups had improved KSS knee and KSS function scores, with no difference determined. Knee extension peak torque was significantly higher postoperatively in the partial excision group at postoperative 1 year (p = 0.036). However, there were no significant differences in knee flexion peak torque following TKA (p = 0.649). The results of this study demonstrated that total excision of the IPFP during TKA is associated with worse isokinetic performance, which is most likely due to changes in the knee biomechanics with the development of patella baja. Partial excision of the IPFP appears to be a valid alternative to overcome this potential detrimental effect without impeding exposure to the lateral compartment. This is a Level I, therapeutic study.
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Affiliation(s)
- Deniz Cankaya
- Department of Orthopaedic and Traumatology, Aksaray University Education and Research Hospital, Aksaray, Turkey
| | - Sefa Akti
- Department of Orthopaedic and Traumatology, Aksaray University Education and Research Hospital, Aksaray, Turkey
| | - Niyazi Erdem Yasar
- Department of Orthopaedic and Traumatology, University of Health Sciences, Ankara City Hospital, Ankara, Turkey
| | - Dilek Karakus
- Department of Physical Medicine and Rehabilition, University of Health Sciences, Ankara City Hospital, Ankara, Turkey
| | - Kazim Onur Unal
- Department of Orthopaedic and Traumatology, University of Health Sciences, Ankara City Hospital, Ankara, Turkey
| | - Taha Esref Karhan
- Department of Orthopaedic and Traumatology, University of Health Sciences, Ankara City Hospital, Ankara, Turkey
| | - Erdem Aras Sezgin
- Department of Orthopaedic and Traumatology, Aksaray University Education and Research Hospital, Aksaray, Turkey
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Karabulut D, Arslan YZ, Salami F, Wolf SI, Götze M. Biomechanical assessment of patellar tendon advancement in patients with cerebral palsy and crouch gait. Knee 2021; 32:46-55. [PMID: 34411886 DOI: 10.1016/j.knee.2021.07.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/21/2021] [Accepted: 07/23/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND Patellar height is a valuable measure to evaluate the effect of patellar tendon advancement (PTA) on knee function. In the literature, there is no validated procedure to measure the patellar height. In this study we aimed to (1) determine the patella position through musculoskeletal modeling, (2) investigate the effects of two surgical procedures applied for PTA, and (3) assess the effect of PTA in combination with single-event multilevel surgery (SEMLS) on the knee kinematics of patients with cerebral palsy (CP) and crouch gait. METHOD Three-dimensional gait and X-ray data of children with CP and crouch gait were retrospectively analyzed if they had received a SEMLS in combination with PTA (PTA group, n = 18) or without PTA (NoPTA group, n = 18). A computational musculoskeletal model was used to quantify patella position, knee extension moment arm, and knee kinematics pre- and postoperatively. RESULTS Patellar height significantly decreased in the PTA group (P = 0.004), while there was no difference in the NoPTA group (P > 0.05). The bony procedure for PTA provided a better Insall-Salvati ratio than the soft tissue procedure. The peak knee extension moment arm significantly increased in the PTA group (P = 0.008). In terms of postoperative knee joint kinematics, the PTA group was closer to typically developed children than the NoPTA group. CONCLUSION Musculoskeletal modeling was found to be an effective tool for the determination of the patellar height. PTA improved the patella position, knee extension moment arm, and knee kinematics and was an effective procedure for the surgical management of crouch gait in patients with CP.
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Affiliation(s)
- Derya Karabulut
- Istanbul University-Cerrahpasa, Faculty of Engineering, Department of Mechanical Engineering, Istanbul, Turkey.
| | - Yunus Ziya Arslan
- Turkish-German University, Department of Robotics and Intelligent Systems, The Institute of the Graduate Studies in Science and Engineering, Istanbul, Turkey
| | - Firooz Salami
- Universitätsklinikum Heidelberg, Centre of Orthopedics and Trauma Surgery, Heidelberg, Germany
| | - Sebastian I Wolf
- Universitätsklinikum Heidelberg, Centre of Orthopedics and Trauma Surgery, Heidelberg, Germany
| | - Marco Götze
- Universitätsklinikum Heidelberg, Centre of Orthopedics and Trauma Surgery, Heidelberg, Germany
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The Impact of Patellar Tendon Advancement on Knee Joint Moment and Muscle Forces in Patients with Cerebral Palsy. Life (Basel) 2021; 11:life11090944. [PMID: 34575092 PMCID: PMC8465174 DOI: 10.3390/life11090944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/07/2021] [Accepted: 09/08/2021] [Indexed: 11/17/2022] Open
Abstract
Background: Patellar tendon advancement (PTA) is performed for the treatment of crouch gait in patients with cerebral palsy (CP). In this study, we aimed to determine the influence of PTA in the context of single-event multilevel surgery (SEMLS) on knee joint moment and muscle forces through musculoskeletal modeling; Methods: Gait data of children with CP and crouch gait were retrospectively analyzed. Patients were included if they had a SEMLS with a PTA (PTA group, n = 18) and a SEMLS without a PTA (NoPTA group, n = 18). A musculoskeletal model was used to calculate the pre- and postoperative knee joint moments and muscle forces; Results: Knee extensor moment increased in the PTA group postoperatively (p = 0.016), but there was no statistically significant change in the NoPTA group (p > 0.05). The quadriceps muscle forces increased for the PTA group (p = 0.034), while there was no difference in the NoPTA group (p > 0.05). The hamstring muscle forces increased in the PTA group (p = 0.039), while there was no difference in the NoPTA group (p > 0.05); Conclusions: PTA was found to be an effective surgery for the treatment of crouch gait. It contributes to improving knee extensor moment, decreasing knee flexor moment, and enhancing the quadriceps and hamstring muscle forces postoperatively.
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Abstract
BACKGROUND Gait dysfunction associated with patella alta (PA) in subjects with cerebral palsy (CP) has been presumed but not objectively established clinically or through biomechanical modeling. It is hypothesized that PA is associated with increasing level of motor impairment, increasing age, obesity, and worse stance phase knee kinematics and kinetics in children with CP. METHODS Retrospective case series of 297 subjects with CP studied in our Motion Analysis Center. Data analyzed included patient demographics (age, body mass index, CP classification), patella height (Koshino-Sugimoto Index), and knee kinematics and kinetics. RESULTS PA was present in 180 of 297 subjects (61%), in 68 of the 146 (47%) with unilateral CP, and 112 of 151 subjects (74%) with bilateral CP. For unilateral CP, the prevalence of PA was not significantly different between Gross Motor Function Classification System (GMFCS) I and II (P=0.357). For bilateral CP, the prevalence of PA in GMFCS III was significantly greater than in GMFCS I and II (P=0.02). Regression analysis showed a significant trend between increasing age and PA in unilateral and bilateral groups (P<0.001 and 0.001, respectively). The prevalence of PA was not significantly different across body mass index categories for either unilateral or bilateral groups. There were only 2 of 10 significant correlations between PA and gait parameters for subjects with unilateral CP functioning at the GMFCS I and II levels. There were 8 of 12 significant correlations between PA and gait parameters for subjects with bilateral CP functioning at the GMFCS I, II, and III levels. CONCLUSIONS PA is common in ambulatory children with CP across topographic types and motor functional levels. PA is well tolerated with respect to gait dysfunction in unilateral CP, but may contribute to crouch gait in bilateral CP. Gait dysfunction cannot be inferred from the radiographic assessment of patellar height, and radiographic evidence of PA by itself does not justify surgical correction with patellar tendon advancement or shortening. LEVEL OF EVIDENCE Level III-prognostic, retrospective series.
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11
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Almoajil H, Wilson N, Theologis T, Hopewell S, Toye F, Dawes H. Outcome domains and measures after lower limb orthopaedic surgery for ambulant children with cerebral palsy: an updated scoping review. Dev Med Child Neurol 2020; 62:1138-1146. [PMID: 32567044 DOI: 10.1111/dmcn.14599] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 05/07/2020] [Indexed: 11/30/2022]
Abstract
AIM To determine the reported outcome domains and measures used to assess lower limb orthopaedic surgery of ambulant children and young people with cerebral palsy (CP) and map these outcomes to the International Classification of Functioning, Disability and Health - Children and Youth (ICF-CY) framework. METHOD This updated scoping review included studies published between January 2016 and July 2019 in five databases: MEDLINE, PubMed, EMBASE, CINAHL, and the Cochrane Central Register of Controlled Trials. Studies were included if participants were ambulant individuals with CP aged between 0 and 20 years who had undergone lower limb orthopaedic surgery. Health outcome domains and measures were identified and classified using the ICF-CY framework. RESULTS Forty-four eligible studies were identified with a total of 40 different outcome domains recorded. Among eligible studies, 44 (100%) measured body function and structural impairment and seven (16%) measured activity limitation and participation restriction. The most frequently reported outcome was gait pattern (n=37, 84%). Few studies reported adverse effects of surgery (n=13, 30%). Twenty-nine different outcome measures were identified. Patient-reported outcomes measures were used in 10 studies (23%). INTERPRETATION The review highlights a heterogeneity in the reported outcome domains and measures used in CP studies. The majority of the reported outcomes focus on the ICF-CY domain of body function and structure. The review also highlights a notable shift towards patient-reported outcomes in recent years. Development of a core outcome set for lower limb orthopaedic surgery would guide researchers to use more consistent and complete measurement sets.
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Affiliation(s)
- Hajar Almoajil
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK.,Department of Physical Therapy, College of Applied Medical Science, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Nichola Wilson
- Department of Surgery, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
| | - Tim Theologis
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK.,Paediatric Orthopaedic Surgery, Nuffield Orthopaedic Centre, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Sally Hopewell
- Centre for Statistics in Medicine, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Francine Toye
- Physiotherapy Research Unite, Nuffield Orthopaedic Centre, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Helen Dawes
- Centre for Movement, Occupational and Rehabilitation Sciences, Oxford Institute of Nursing, Midwifery and Allied Health Research, Oxford Brookes University, Oxford, UK.,Oxford Health NHS Foundation Trust, Oxford, UK
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O'Sullivan R, Marron A, Brady K. Crouch gait or flexed-knee gait in cerebral palsy: Is there a difference? A systematic review. Gait Posture 2020; 82:153-160. [PMID: 32927222 DOI: 10.1016/j.gaitpost.2020.09.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 08/11/2020] [Accepted: 09/01/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND Crouch or flexed-knee gait is one of the most common pathological gait patterns in cerebral palsy (CP). Differences exist in definitions used; the degree of knee flexion, inclusion of hip or ankle position, and timing in the gait cycle. This ambiguity may be responsible for variations in prevalence rates and difficulty comparing data across studies. RESEARCH QUESTION What are the kinematic parameters used to define crouch or flexed-knee gait in CP gait? A secondary aim was to examine the quality of data reporting, focusing on the sample characteristics, inclusion/exclusion criteria and the choice of limb included for analysis. METHODS Articles included in this review reported on a specified cohort of adults or children with crouch or flexed-knee gait assessed with 3-dimensional gait analysis. A customised data extraction and quality assessment table was designed specific to the research question. RESULTS The majority (75 %) of included studies used the term crouch gait. Where the pattern was defined, 80 % of crouch papers and 94 % of flexed-knee gait papers based this solely on knee position. Kinematic parameters were clearly defined when they provided objective values of knee flexion, supported this with rationale and provided a reference point in the gait cycle. Only 22 % of crouch papers and 19 % of flexed-knee gait papers provided this information. The majority of studies (67 % crouch; 90 % flexed-knee) specified which limb(s) were included for analysis with the majority including both limbs. Objective values of knee flexion ranged from 8 o to 30 o. SIGNIFICANCE This review highlights that crouch and flexed knee are synonymous and ambiguity exists in the kinematic definition making it difficult to make compare data amongst study cohorts. Future research should provide detailed definitions including the threshold value of knee flexion, how it was derived, the timing in the gait cycle and the limb(s) included in analysis.
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Affiliation(s)
- R O'Sullivan
- Gait Laboratory, Central Remedial Clinic, Clontarf, Dublin 3, Ireland.
| | - A Marron
- Gait Laboratory, Central Remedial Clinic, Clontarf, Dublin 3, Ireland
| | - K Brady
- Gait Laboratory, Central Remedial Clinic, Clontarf, Dublin 3, Ireland
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What's New in the Orthopaedic Treatment of Ambulatory Children With Cerebral Palsy Using Gait Analysis. J Pediatr Orthop 2020; 40:e498-e503. [PMID: 32501922 DOI: 10.1097/bpo.0000000000001461] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Limb deformities in ambulatory children with cerebral palsy (CP) are common. The natural history of lower extremity deformities is variable and the impact on gait is managed with many treatment modalities. Effective interventions must consider the underlying pathophysiology, patient-specific goals, and incorporate objective outcome assessment. Evaluation and treatment include observation, tone management multilevel orthopaedic surgery to address muscle contractures and bony deformities, and the use of gait analysis for preoperative and postoperative assessment. METHODS A PubMed search of the orthopaedic literature for studies published between January 2016 and February 2019 was performed. Eligible abstracts included the use of 3-dimensional instrumented gait analysis in the evaluation and treatment of the lower extremities in ambulatory children with CP. Seven hundred twenty abstracts were reviewed, with 84 papers identified as eligible, of which 45 full manuscripts were included for detailed review. RESULTS The review summarized recent advances regarding the treatment of torsional alignment, knee deformities and clinical gait evaluation with visual assessment tools compared with instrumented gait analysis. CONCLUSIONS Gait analysis of ambulatory children with CP remains essential to evaluation and surgical decision-making. Promising results have been reported with the goal of maintaining or reaching a higher level of function and increased endurance. LEVEL OF EVIDENCE Level IV-literature review.
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Campbell R, Tipping N, Carty C, Walsh J, Johnson L. Orthopaedic management of knee joint impairment in cerebral palsy: A systematic review and meta-analysis. Gait Posture 2020; 80:347-360. [PMID: 32615408 DOI: 10.1016/j.gaitpost.2020.06.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 06/01/2020] [Accepted: 06/14/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND The optimal management of impaired knee joint function in patients with cerebral palsy (CP) remains a significant and ongoing challenge in paediatric orthopaedic surgery. RESEARCH QUESTION What are the clinical and functional outcomes after operative and non-operative orthopaedic interventions for knee joint impairment in patients with CP? METHODS This systematic review and meta-analysis of orthopaedic interventions for the management of knee joint impairment in paediatric CP patients evaluated study-level data in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Statement. We performed searches of the following electronic databases from their dates of inception to November 2019: Medline (Ovid), Embase (Ovid) and Pubmed. We extracted mean differences in pre-operative and post-operative measurements for the following outcomes: minimum knee flexion in stance; knee flexion at initial contact; maximum knee flexion in swing; range of motion; popliteal angle; fixed flexion deformity angle; and mean pelvic tilt. RESULTS Sixty-nine retrospective cohort studies, prospective cohort studies and RCTs comprising 2991 patients were included with 4578 knees analysed. Included studies were of sufficient quality as assessed by the MOOSE checklist. Operative interventions showed significant improvement in knee flexion at initial contact, knee flexion in stance, range of motion, popliteal angle and fixed flexion deformity which were comparable when subgrouped according to operative technique. In contrast, non-operative techniques and botulinum toxin injection did not confer significant improvements. Operative interventions for knee joint impairment led to increased mean pelvic tilt and reduced maximum knee flexion in swing. SIGNIFICANCE This review provides strong evidence that operative interventions for the management of knee joint impairment in cerebral palsy patients improve knee kinematics and clinical examination findings.
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Affiliation(s)
- Ryan Campbell
- Department of Medicine, University of New South Wales, Australia.
| | - Nicholas Tipping
- Department of Medicine, University of New South Wales, Australia
| | - Christopher Carty
- School of Allied Health Sciences and GCORE, Menzies Health Institute Queensland, Griffith University, Gold Coast, QLD 4222, Australia; Department of Orthopaedics, Queensland Children's Hospital, QLD 4101, Australia
| | - John Walsh
- Department of Orthopaedics, Queensland Children's Hospital, QLD 4101, Australia
| | - Liam Johnson
- Department of Orthopaedics, Queensland Children's Hospital, QLD 4101, Australia
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Distal Femoral Shortening Osteotomy for Severe Knee Flexion Contracture and Crouch Gait in Cerebral Palsy. J Clin Med 2019; 8:jcm8091354. [PMID: 31480593 PMCID: PMC6780050 DOI: 10.3390/jcm8091354] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 08/24/2019] [Accepted: 08/29/2019] [Indexed: 11/17/2022] Open
Abstract
Although there have been advancements of surgical techniques to correct gait abnormalities seen in patients with cerebral palsy, the crouch gait remains one of the most difficult problems to treat. The purpose of this retrospective study was to examine our results of distal femoral shortening osteotomy (DFSO) and patellar tendon advancement (PTA), performed in patients with crouch gait associated with severe knee flexion contracture. A total of 33 patients with a mean fixed knee contracture of 38° were included in the study. The mean age at the time of surgery was 12.2 years and the mean follow-up was 26.9 months. The measurements of clinical, radiological, and gait parameters were performed before and after surgery. The mean degrees of knee flexion contracture, Koshino index of patella height, and Gait Deviation Index were found to be significantly improved at the time of final follow-up. The maximum knee extension during the stance phase improved by an average of 25°, and the range of knee motion during gait increased postoperatively. On the other hand, the mean anterior pelvic tilt increased by 9.9°. Also, the maximum knee flexion during the swing phase decreased and the timing of peak knee flexion was observed to be delayed. We conclude that combined procedure of DFSO and PTA is an effective and safe surgical method for treating severe knee flexion contracture and crouch gait. However, the surgeons should be aware of the development of increased anterior pelvic tilt and stiff knee gait after the index operation.
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