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Scheurer F, Zimmermann SM, Fischer P, Wirth SH, Beeler S, Viehöfer AF. Ten-Year Minimum Follow-up Study of First Metatarsophalangeal Joint Fusion in Young vs Old Patients. Foot Ankle Int 2024; 45:217-222. [PMID: 38158798 PMCID: PMC10960322 DOI: 10.1177/10711007231205567] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
BACKGROUND Painful degenerative joint disease (DJD) of the first metatarsophalangeal joint (MTP I), or hallux rigidus, mainly occurs in later stages of life. For end-stage hallux rigidus, MTP I arthrodesis is considered the gold standard. As young and active patients are affected considerably less frequently, it currently remains unclear, whether they benefit to the same extent. We hypothesized that MTP I arthrodesis in younger patients would lead to an inferior outcome with decreased rates of overall with lower rates of patient postoperative pain and function compared to an older cohort. METHODS All patients aged <50 years who underwent MTP I arthrodesis at our institution between 1995 and 2012 were included in this study. This group was then matched and compared with a group of patients aged >60 years. Minimum follow-up was 10 years. Outcome measures were Tegner activity score (TAS), a "Virtual Tegner activity score" (VTAS), the visual analog scale (VAS), and the Foot Function index (FFI). RESULTS Sixty-one MTP I fusions (n = 28 young, n = 33 old) in 46 patients were included in our study at an average of 14 years after surgery. Younger patients experienced significantly more pain relief as reflected by changes in VAS and FFI Pain subscale scores. No difference in functional outcomes was found with change in the FFI function subscale or in the ability to have desired functional outcomes using the ratio of TAS to VTAS. Revision rate did not differ between the two groups apart from hardware removal, which was significantly more likely in the younger group. CONCLUSION In patients below the age of 50 years with end-stage DJD of the first metatarsal joint, MTP I arthrodesis not only yielded highly satisfactory postoperative results at least equal outcome compared to an older cohort of patients aged >60 years at an average 14 years' follow-up. Based on these findings, we consider first metatarsal joint fusion even for young patients is a valid option to treat end-stage hallux rigidus. LEVEL OF EVIDENCE Level III, a case-control study.
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Alshehri AS, Alzahrani FA, Alqahtani LS, Alhadlaq KH, Alshabraqi HA, Aljaafri ZA. Outcomes of Operative Versus Nonoperative Management for Hallux Rigidus: A Tertiary Care Center Experience. Cureus 2023; 15:e46991. [PMID: 38022308 PMCID: PMC10640908 DOI: 10.7759/cureus.46991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2023] [Indexed: 12/01/2023] Open
Abstract
Background This study aims to investigate and report the outcomes of various management modalities used for hallux rigidus, a common form of degenerative joint disease affecting the foot and ankle. The research focuses on understanding the pathophysiology, classification systems, and nonoperative approaches such as medical therapy, intra-articular injections, shoe modifications, and physical therapy. Surgical techniques, including joint-sparing and joint-sacrificing procedures, are explored, considering factors such as disease stage and patient preferences. Methods A retrospective cohort study was conducted at King Abdulaziz Medical City (KAMC), Riyadh. The study included all patients who were diagnosed with hallux rigidus from the period 2016 to 2022. Data were collected through the BESTCare system at KAMC. All the data were collected through Microsoft Excel (Microsoft Corporation, Redmond, Washington) and transferred for analysis. Statistical analysis was performed using the IBM SPSS Statistics for Windows, Version 25 (Released 2017; IBM Corp., Armonk, New York). Frequencies and percentages were used to detail categorical variables, whereas continuous variables were examined by the mean and standard deviation. A p-value of <0.05 was considered to report the statistical significance. Results A total of 84 patients were included. The majority were women (60.7%). Diabetes and hypertension were prevalent comorbidities, affecting 21.4% and 35.7% of patients, respectively. Nonoperative management was the most common approach (66.7%). Complications were minimal (2.4% infections, 1.2% metatarsalgia), and 67.9% of patients reported no persistence of symptoms after treatment. Conclusion The low complication rates and the lack of significant associations between treatment modalities and outcomes suggest the generally safe and effective nature of the employed interventions. These findings can guide clinicians in making informed decisions regarding the management of hallux rigidus, while also highlighting areas for further research to improve treatment strategies and outcomes.
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Affiliation(s)
- Ali S Alshehri
- Orthopedic Surgery, King Abdulaziz Medical City, Ministry of National Guard - Health Affairs, Riyadh, SAU
- Orthopedic Surgery, King Abdullah International Medical Research Center, Riyadh, SAU
| | - Faisal A Alzahrani
- Orthopedic Surgery, King Abdulaziz Medical City, Ministry of National Guard - Health Affairs, Riyadh, SAU
- Orthopedic Surgery, King Abdullah International Medical Research Center, Riyadh, SAU
| | - Lujain S Alqahtani
- Orthopedic Surgery, King Abdulaziz Medical City, Ministry of National Guard - Health Affairs, Riyadh, SAU
- Orthopedic Surgery, King Abdullah International Medical Research Center, Riyadh, SAU
| | - Khalid H Alhadlaq
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, SAU
- Orthopedic Surgery, King Abdullah International Medical Research Center, Riyadh, SAU
| | - Halah A Alshabraqi
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, SAU
- Orthopedic Surgery, King Abdullah International Medical Research Center, Riyadh, SAU
| | - Ziad A Aljaafri
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, SAU
- Orthopedic Surgery, King Abdullah International Medical Research Center, Riyadh, SAU
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Sethi M, Limaye N, Alderton E, Limaye R, Kulkarni A. Silastic Joint Arthroplasty as a Joint-Preserving Alternative for End-Stage Hallux Rigidus: Outcomes From 112 First Metatarsophalangeal Joint Arthroplasties. Cureus 2023; 15:e46561. [PMID: 37933343 PMCID: PMC10625660 DOI: 10.7759/cureus.46561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/05/2023] [Indexed: 11/08/2023] Open
Abstract
Aim Osteoarthritis of the first metatarsophalangeal joint (MTPJ) is a common forefoot problem affecting patients in later years. It leads to pain, gait problems, and difficulty with activities of daily living. Treatment is controversial and varies according to patient symptoms and surgeon preference. Arthrodesis remains the gold standard but it has its own complications. It is associated with adjacent joint arthritis and transfer metatarsalgia. The aim of this study was to analyze the outcome of double-stemmed silastic joint arthroplasty (Wright-Medical, Memphis, TN) for end-stage hallux rigidus. Methods This retrospective analysis included 117 consecutive first MTPJ silastic arthroplasties done between January 2016 and February 2023 for end-stage hallux rigidus. There were 77 females and 40 males with a mean age of 65 years (46-82 years). Radiological and clinical assessments were performed, and patient-reported outcome measure data (PROMS) and visual analogue scale (VAS) scores were collected pre- and post-operatively. Results Findings showed 99.1% survivorship following a silastic joint arthroplasty with a mean follow-up of four years (six months to seven years). The MOXFQ (Manchester Oxford Foot Questionnaire) score improved from a mean of 81 (59.8-100) to 13 (0-57). The mean VAS scores improved from 7.2 (5-10) to 1.5 (0-7) postoperatively. Five patients were lost to follow-up. Two patients developed deep infection and one required revision. The other patient with infection was lost to follow-up. In total 10 patients (8.9%) developed complications, out of which eight patients responded to simple treatments. Conclusion Results have shown good to excellent outcomes following a silastic arthroplasty of the first MTPJ for the treatment of end-stage hallux rigidus. The survivorship at a mean follow-up of four years was 99.1% and the patient satisfaction rate was 90.1%. As historically reported, we did not see any soft tissue reaction or progressive osteolysis in any of our patients. It provides comparable and predictable outcomes to joint fusion for end-stage arthritis.
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Affiliation(s)
- Mohit Sethi
- Orthopaedics and Trauma, North Tees and Hartlepool NHS Foundation Trust, Stockton-on-Tees, GBR
| | - Natalie Limaye
- Orthopaedics and Trauma, North Tees and Hartlepool NHS Foundation Trust, Stockton-on-Tees, GBR
| | - Elizabeth Alderton
- Orthopaedics and Trauma, North Tees and Hartlepool NHS Foundation Trust, Stockton-on-Tees, GBR
| | - Rajiv Limaye
- Orthopaedics and Trauma, North Tees and Hartlepool NHS Foundation Trust, Stockton-on-Tees, GBR
| | - Ameet Kulkarni
- Orthopaedics and Trauma, North Tees and Hartlepool NHS Foundation Trust, Stockton-on-Tees, GBR
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Artioli E, Mazzotti A, Zielli SO, Arceri A, Langone L, Gerardi S, Faldini C. Surgical management of osteochondral lesions of the first metatarsal head: A systematic review. Foot Ankle Surg 2023:S1268-7731(23)00099-1. [PMID: 37301674 DOI: 10.1016/j.fas.2023.05.007] [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: 03/28/2023] [Revised: 05/05/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023]
Abstract
BACKGROUND Treating osteochondral lesions of the first metatarsal head can help reducing pain and preventing end-stage arthritic cartilage degeneration and hallux rigidus. Several surgical techniques have been described, but no clear indications are reported. This systematic review aims to offer an overview of the current surgical treatments for focal osteochondral lesions of the first metatarsal head. METHODS The selected articles were examined to extract data about population, surgical technique, and clinical outcomes. RESULTS Eleven articles were included. Mean age at surgery was 38,2 years. Osteochondral autograft was the most used technique. After surgery, an improvement was achieved in AOFAS, VAS, and hallux dorsiflexion but not in plantarflexion. CONCLUSION There is limited evidence and knowledge regarding the surgical management of the first metatarsal head osteochondral lesions. Various surgical techniques have been proposed, drawn from other districts. Good clinical results have been reported. Further high-level comparative studies are necessary to design an evidence-based treatment algorithm.
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Affiliation(s)
- Elena Artioli
- IRCCS Istituto Ortopedico Rizzoli, Via Giulio Cesare Pupilli 1, 40136, Bologna, Italy.
| | - Antonio Mazzotti
- IRCCS Istituto Ortopedico Rizzoli, Via Giulio Cesare Pupilli 1, 40136, Bologna, Italy; Department of Biomedical and Neuromotor Sciences, University of Bologna, 40123 Bologna, Italy
| | - Simone Ottavio Zielli
- IRCCS Istituto Ortopedico Rizzoli, Via Giulio Cesare Pupilli 1, 40136, Bologna, Italy
| | - Alberto Arceri
- IRCCS Istituto Ortopedico Rizzoli, Via Giulio Cesare Pupilli 1, 40136, Bologna, Italy
| | - Laura Langone
- IRCCS Istituto Ortopedico Rizzoli, Via Giulio Cesare Pupilli 1, 40136, Bologna, Italy
| | - Simone Gerardi
- IRCCS Istituto Ortopedico Rizzoli, Via Giulio Cesare Pupilli 1, 40136, Bologna, Italy
| | - Cesare Faldini
- IRCCS Istituto Ortopedico Rizzoli, Via Giulio Cesare Pupilli 1, 40136, Bologna, Italy; Department of Biomedical and Neuromotor Sciences, University of Bologna, 40123 Bologna, Italy
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Bejarano-Pineda L, Cody EA, Nunley JA. Prevalence of Hallux Rigidus in Patients With End-Stage Ankle Arthritis. J Foot Ankle Surg 2021; 60:21-24. [PMID: 33160837 DOI: 10.1053/j.jfas.2020.04.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 12/19/2019] [Accepted: 04/07/2020] [Indexed: 02/03/2023]
Abstract
Arthritis of the foot is a significant cause of pain and disability. The prevalence of foot arthritis in adults aged ≥50 has been reported to be 17%. Of those, 25% are estimated to be radiographic arthritis of the first metatarsophalangeal joint. The purposes of this study were to (1) identify the prevalence of radiographic hallux rigidus (HR) in a population of patients with end-stage ankle arthritis relative to that reported in the general population and (2) identify associations between the presence of HR and demographic and clinical factors. A total of 870 feet in 809 subjects with end-stage ankle arthritis who underwent primary total ankle arthroplasty between November 2006 and November 2017 were included. Feet were stratified by patient age: <40, 40 to 59, 60 to 79, and ≥80 years. Etiology of ankle arthritis was classified as inflammatory, post-traumatic, primary, and other. The prevalence of HR in the study group was 72.9%. The prevalence of HR was slightly higher in patients with inflammatory arthritis (odds ratio 1.31, 95% confidence interval 0.73 to 2.32) and primary arthritis (odds ratio 1.18, 95% confidence interval 0.86 to 1.63). The prevalence of HR increased with age (p = .01). In conclusion, the prevalence of radiographic HR in a population with end-stage ankle arthritis was significantly higher relative to patients without documented comorbidities in the foot and ankle. Increasing age was associated with a higher prevalence of the disease.
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Affiliation(s)
- Lorena Bejarano-Pineda
- Fellow, Division of Sports Medicine, Department of Orthopaedic Surgery, University of Illinois at Chicago, Chicago, IL.
| | - Elizabeth A Cody
- Assistant Attending, Division of Foot and Ankle Surgery, Department of Orthopedic Surgery, Hospital for Special Surgery, New York, NY
| | - James A Nunley
- Professor, Division of Foot and Ankle Surgery, Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC
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Jørsboe PH, Pedersen MS, Benyahia M, Kallemose T, Penny JØ. Mid-Term Functionality and Survival of 116 HemiCAP® Implants for Hallux Rigidus. J Foot Ankle Surg 2021; 60:322-327. [PMID: 33423889 DOI: 10.1053/j.jfas.2020.10.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 08/22/2020] [Accepted: 10/30/2020] [Indexed: 02/03/2023]
Abstract
Hallux rigidus can be treated with a proximal hemiarthroplasty (HemiCAP®) to preserve the motion in the first metatarsophalangeal joint and reduce pain. This study examines the functionality, and survival rates of HemiCAP® implants, with or without a dorsal flange. One hundred and five patients were treated with a HemiCAP® (N = 116 HemiCAPs®) between 2006 and 2014. Revision rates, arthrosis score, hallux valgus (HV), intermetatarsal (IM), distal metaphyseal articular angle (DMAA), visual analog scale (VAS) (1-10 points), American Orthopaedic Foot and Ankle Score (AOFAS) MTP-IP (AOFAS 0-100 points), SF-12, range of motion (ROM), and radiographs were analyzed pre- and postoperatively. Statistics: Kaplan-Meier survival analysis, Cox-regression, and paired t tests. At 2, 4, and 6 years, the implant survival was 87%, 83%, and 81%, respectively. All revised due to pain. Dorsal flange, gender, arthrosis, HV, IM, and DMAA did not influence the results. At the mean 5-year follow-up (n = 47) median (range) dorsal ROM was 45° (10°-75°), AOFAS was mean 87.2 ± 10.8, VAS was 2 ± 1.6, and SEFAS was 42 ± 6 points. The dorsal flange made no significant difference for ROM or patient-reported outcome measures compared to the HemiCAP® with no dorsal flange. Twenty-three patients with preoperative data were re-examined, and preoperative dorsal ROM mean difference (confidence interval [CI]) increased 20.7° (13.9°-27.4°), VAS decreased with a mean difference (CI) of -4.7 (-5.8 to 3.5), and AOFAS increased with a mean difference (CI) 26.2 (20.2-32.2) (for all p < .001). The 6-year survival rate of the HemiCAP® implant was 81%. The design change to dorsal flange was not evident clinically. Unrevised patients had significantly less pain, greater ROM, and better foot and ankle function than preoperatively.
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Affiliation(s)
- Pernille Henszelman Jørsboe
- Resident, Department of Orthopedic Surgery, Hvidovre Hospital, Copenhagen University Hospital, Hvidovre, Denmark; Resident, Department of Orthopedic Surgery, Zealand University Hospital, Køge, Denmark.
| | - Michael Stage Pedersen
- Foot and Ankle Surgeon, Department of Orthopedic Surgery, Aleris-Hamlet Hospitals, Søborg, Denmark
| | - Mostafa Benyahia
- Foot and Ankle Surgeon, Department of Orthopedic Surgery, Hvidovre Hospital, Copenhagen University Hospital, Hvidovre, Denmark
| | - Thomas Kallemose
- Statistician, Hvidovre Hospital, Clinical Research Centre, Copenhagen University Hospital, Hvidovre, Denmark
| | - Jeannette Ø Penny
- Foot and Ankle Surgeon, Department of Orthopedic Surgery, Zealand University Hospital, Køge, Denmark
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Incorporation of an Allogenic Cortical Bone Graft Following Arthrodesis of the First Metatarsophalangeal Joint in a Patient with Hallux Rigidus. Life (Basel) 2021; 11:life11060473. [PMID: 34073841 PMCID: PMC8225087 DOI: 10.3390/life11060473] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/21/2021] [Accepted: 05/21/2021] [Indexed: 01/08/2023] Open
Abstract
Hallux rigidus is degenerative arthritis of the first metatarsophalangeal joint characterized by pain and stiffness in the joint with limitation of motion and functional impairment. Recently, bone grafts have been introduced in orthopedic procedures, namely osteosynthesis and arthrodesis. Allografts can induce bone formation, provide support for vascular and bone ingrowth and have a low risk of immunological rejection. A 52-year-old female patient with hallux rigidus underwent arthrodesis of the first metatarsophalangeal joint using Shark Screw® made of allogenic cortical bone. Corrective surgery was performed after 10 weeks, and a 5 × 3 mm large part of the Shark Screw® with the surrounding patient's bone was removed. A histological evaluation revealed a vascularized graft with the newly formed compact lamellar bone fitting exactly to the cortical graft. The bone surface was lined by plump osteoblasts with osteoid production, and osteocytes were present in the lacunae. The arthrodesis of the first metatarsophalangeal joint using an allogenic cortical bone graft results in fast, primary bone healing without immunological rejection. This case suggests that the cortical allograft is a good and safe treatment option with an excellent graft incorporation into the host bone. However, as the literature evaluating the histology of different bone grafts is scarce, further high-level evidence studies with adequate sample sizes are needed to confirm our findings.
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Colò G, Samaila EM, Magnan B, Felli L. Valenti resection arthroplasty for hallux rigidus: A systematic review. Foot Ankle Surg 2020; 26:838-844. [PMID: 31839478 DOI: 10.1016/j.fas.2019.11.009] [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: 09/11/2019] [Revised: 11/12/2019] [Accepted: 11/26/2019] [Indexed: 02/04/2023]
Abstract
BACKGROUND Valente Valenti proposed in 1976 a "V" resection of the first metatarsophalangeal joint (MPT1) on the sagittal plane for advanced stages of hallux limitus/rigidus, preserving length of the first ray, flexor hallux brevis and sesamoid function. The available literature concerning correct indications, management and clinical outcomes of the Valenti procedure (VP) and its modifications in patients affected by hallux limitus/rigidus was systematically analyzed. METHODS Titles and abstracts of all selected articles were independently screened by two authors to assess their suitability to the research focus. RESULTS Selection produced 8 articles as full-text, for a total of 347 patients, with a mean follow-up of 6±7.1 (range 0.2-17.5) years. Most common complication was transient sesamoiditis in 21 (7.4%) patients. No substantial differences in clinical outcomes were found between the original and modified techniques. CONCLUSIONS VP appears to allow an early recovery with few complications, if compared to fusion, interposition arthroplasties or osteotomies. The wide joint resection does not prevent, if necessary, further procedures such as fusion or implants. LEVEL OF EVIDENCE Level I, systematic review.
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Affiliation(s)
- Gabriele Colò
- Clinica Ortopedica - IRCCS Ospedale Policlinico San Martino, Università di Genova, Largo Rosanna Benzi, 10, 16132, Genoa, GE, Italy
| | | | - Bruno Magnan
- Department of Orthopedics and Trauma Surgery, University of Verona, Italy.
| | - Lamberto Felli
- Clinica Ortopedica - IRCCS Ospedale Policlinico San Martino, Università di Genova, Largo Rosanna Benzi, 10, 16132, Genoa, GE, Italy
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Carpenter B, Klemeyer L. Motion Preservation in Hallux Rigidus After Failure of Hydrogel Implantation: Treatment Considerations and a Report of 2 Cases. J Foot Ankle Surg 2020; 59:162-168. [PMID: 31882138 DOI: 10.1053/j.jfas.2019.03.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 03/03/2019] [Accepted: 03/12/2019] [Indexed: 02/03/2023]
Abstract
Hallux rigidus is a common condition treated daily by surgeons worldwide. During the past decade, the standard treatment algorithm has been questioned by both patients and surgeons seeking alternatives to arthrodesis, which was previously considered the gold standard for advanced disease. Patients are living longer, and many have a more active lifestyle; thus, recreating and improving range of motion and achieving pain relief are increasingly desirable. The treatment spectrum and implant options for motion-preserving techniques in the metatarsophalangeal joint has been widened with the recent US Food and Drug Administration approval of a polyvinyl-alcohol hydrogel implant. In the controlled US Food and Drug Administration trial, the 2-year revision rate was 9.2% and all failures were revised to a first metatarsophalangeal arthrodesis. Outcomes comparison of these revisions to primary fusions showed less predictable pain relief and may warrant alternative treatment considerations, preferably those that allow for continuation of motion preservation. Revision of failed hydrogel implants to arthrodesis can be performed through various first metatarsophalangeal fusion techniques or, as introduced in this review, with a fourth-generation threaded hemiarthroplasty. Excellent 10-year results with primary hemiarthroplasty supported its use as revision procedure in 2 failed polyvinyl-alcohol implantations, preserving arthrodesis for future salvage if necessary. The purpose of this report was to outline a motion-preserving technique after failed hydrogel implants and describe preoperative, intraoperative, and postoperative considerations for optimized outcomes.
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Affiliation(s)
- Brian Carpenter
- Professor, Department of Orthopaedics, The University of North Texas Health Science Center, Fort Worth, TX.
| | - Lisa Klemeyer
- Physician, Private Practice, Aesthetic & Family Podiatry Center, Sarasota, FL
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10
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Jørsboe PH, Speedtsberg MB, Kallemose T, Bencke J, Penny JØ. Plantar forces mid-term after hemiarthroplasty with HemiCAP for hallux rigidus. Foot Ankle Surg 2020; 26:432-438. [PMID: 31153732 DOI: 10.1016/j.fas.2019.05.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/09/2019] [Accepted: 05/14/2019] [Indexed: 02/04/2023]
Abstract
BACKGROUND The aim of this study was to examine the biomechanical gait effects and range of motion following a proximal hemiarthroplasty with a HemiCap®. METHODS Forty-one HemiCAP-operated participants with a mean follow-up time of 5 years had plantar force variables (PFVs) examined and compared with their non-operated foot and a control group. PFVs were compared to the MTPJ1 range of motion (ROM), and pain measured by Visual Analog Scale (VAS). RESULTS The HemiCAP participants' operated feet had higher PFVs laterally on the foot and lower PFVs under the hallux. Dorsal ROM of the operated feet was a median 45° (range 10-75) by goniometer and 41.5 (range 16-80) by X-ray. An increase in ROM decreased the forces under the hallux. Most participants were pain-free. No correlation between pain and PFVs was found. CONCLUSIONS Increased dorsiflexion decreased the maximum force under the hallux. A mid-term HemiCAP maintains some motion. The decreased PFVs under the hallux may reflect a patient reluctance to load the first ray, although no correlation between plantar forces and pain was found.
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Affiliation(s)
- Pernille H Jørsboe
- Dept. of Orthopedic Surgery, Hvidovre Hospital, Copenhagen University Hospital, Denmark; Department of Orthopedic Surgery, Sjaelland University Hospital, Køge, Denmark.
| | - Merete B Speedtsberg
- Human Movement Analysis Laboratory, Dept. of Orthopedic Surgery, Hvidovre Hospital, Copenhagen University Hospital, Denmark
| | - Thomas Kallemose
- Clinical Orthopedic Research Centre, Hvidovre Hospital, Copenhagen University Hospital, Denmark
| | - Jesper Bencke
- Human Movement Analysis Laboratory, Dept. of Orthopedic Surgery, Hvidovre Hospital, Copenhagen University Hospital, Denmark
| | - Jeannette Ø Penny
- Dept. of Orthopedic Surgery, Hvidovre Hospital, Copenhagen University Hospital, Denmark; Department of Orthopedic Surgery, Sjaelland University Hospital, Køge, Denmark
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Massimi S, Caravelli S, Fuiano M, Pungetti C, Mosca M, Zaffagnini S. Management of high-grade hallux rigidus: a narrative review of the literature. Musculoskelet Surg 2020; 104:237-243. [PMID: 32030657 DOI: 10.1007/s12306-020-00646-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 02/02/2020] [Indexed: 01/13/2023]
Abstract
Hallux rigidus is a disease characterized by an osteoarthritic degeneration of the first metatarsophalangeal joint. Aetiology of hallux rigidus is not clear in the literature. History of trauma is considered one of the most common causes of unilateral hallux rigidus. Also, repetitive microtraumas or inflammatory and metabolic causes such as gout, rheumatoid arthritis and seronegative arthropathy can cause degeneration of the joint. The aim of this literature narrative overview is to summarize and expose the great amount of management concepts and information, including the well-codified main operative procedures to treat of hallux rigidus. This may provide current information for med-school students, researchers and physicians. A comprehensive literature search using PubMed database has been performed. The management for hallux rigidus can involve a variety of therapeutic interventions, conservative or operative. High-grade hallux rigidus represents a complex disease characterized by several clinical and pathological findings, and to achieve optimal results, surgical treatment should be chosen between several surgical techniques depending on the degree of arthritis and other different clinical conditions.
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Affiliation(s)
- S Massimi
- 2nd Clinic of Orthopaedics and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - S Caravelli
- 2nd Clinic of Orthopaedics and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy.
| | - M Fuiano
- 2nd Clinic of Orthopaedics and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - C Pungetti
- Department of Orthopaedic Surgery, Ospedale Maggiore "Pizzardi", Bologna, Italy
| | - M Mosca
- 2nd Clinic of Orthopaedics and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy
| | - S Zaffagnini
- 2nd Clinic of Orthopaedics and Traumatology, Rizzoli Orthopaedic Institute, Bologna, Italy
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Abstract
Evidence-based medicine continues to guide our treatment of patients. Owing to the unique characteristics of the first metatarsophalangeal joint (1st MTPJ) with its small surface area and the significant amount of multiplanar force that affects it, finding the perfect implant to allow motion and alleviate pain is still the ultimate goal. While some of the older metallic implants and silastic spacers may still be providing pain relief and function to patients, the majority have failed and caused significant bone loss along the way. The HemiCap implants have shown some promise in select patients and may still be a viable option in patients desiring maintenance of 1st MTPJ motion.
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Affiliation(s)
- Michelle L Butterworth
- Williamsburg Regional Hospital, 500 Thurgood Marshall Hwy, Suite B, Kingstree, SC 29556, USA.
| | - Maria Ugrinich
- Penn Presbyterian Medical Center, 1317 Lombard Street, Philadelphia, PA 19147, USA
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Colò G, Alessio-Mazzola M, Dagnino G, Felli L. Long-Term Results of Surgical Treatment of Valenti Procedures for Hallux Rigidus: A Minimum Ten-Year Follow-Up Retrospective Study. J Foot Ankle Surg 2019; 58:291-294. [PMID: 30850097 DOI: 10.1053/j.jfas.2018.08.055] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Indexed: 02/03/2023]
Abstract
Few studies reporting long-term results of surgical treatment of hallux rigidus have been published. The aim of this study is to assess the clinical outcome of Valenti procedures in a series of patients with hallux limitus/rigidus with a minimum 10-year follow-up time. We retrospectively evaluated 38 patients (40 feet) who underwent a Valenti procedure with a mean follow-up of 132 ± 19.6 (range 114 to 184) months. All patients were clinically reassessed on the basis of the evaluation of pain (visual analogue scale), function (American Orthopaedic Foot and Ankle Society Hallux Metatarsophalangeal-Interphalangeal Scale Assessment and Foot & Ankle Disability Index), and subjective satisfaction. The scores before and after treatment, obtained from clinical recordings and clinical evaluation during the last follow-up visits, were compared. We found significant improvement of the mean values of the visual analogue score (p < .0001), Foot & Ankle Disability Index (p < .0001), and American Orthopaedic Foot and Ankle Society Hallux Metatarsophalangeal-Interphalangeal Scale Assessment (p < .0001) during the latest follow-up visits. The results suggest that the Valenti technique represents a safe, reproducible surgical procedure that allows satisfying long-term results. The few reported complications were essentially the progressive worsening of the joint stiffness, but no sesamoiditis, metatarsal overload, secondary surgeries, or failures were documented.
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Affiliation(s)
- Gabriele Colò
- Surgeon, Department of Surgical Sciences (DISC), Orthopaedic and Traumatologic Clinic, University of Genova, Genoa, Italy
| | - Mattia Alessio-Mazzola
- Surgeon, Department of Surgical Sciences (DISC), Orthopaedic and Traumatologic Clinic, University of Genova, Genoa, Italy.
| | - Giacomo Dagnino
- Surgeon, Department of Surgical Sciences (DISC), Orthopaedic and Traumatologic Clinic, University of Genova, Genoa, Italy
| | - Lamberto Felli
- Professor, Department of Surgical Sciences (DISC), Orthopaedic and Traumatologic Clinic, University of Genova, Genoa, Italy
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Majeed H. Silastic replacement of the first metatarsophalangeal joint: historical evolution, modern concepts and a systematic review of the literature. EFORT Open Rev 2019; 4:77-84. [PMID: 30993009 PMCID: PMC6440300 DOI: 10.1302/2058-5241.4.180055] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Silastic implants for the first metatarsophalangeal joint (MTPJ) have been in use for over 50 years. Initial reports were associated with high failure rates leading to development of new designs that are currently in use.The aim of this article is to review the historical evolution and the outcomes of silastic implants for the treatment of end-stage OA of the first MTPJ. Databases were searched for studies reporting the outcomes of silastic implants for the first MTPJ. Various relevant search terminologies were used. Studies reporting the outcomes of metallic implants or arthrodesis were excluded.The literature search revealed 522 studies, of which 28 were included. Eight studies used single-stemmed implants and 20 used double-stemmed implants for their patients. Twenty-eight studies had a total of 2354 feet with silastic replacements in 1884 patients (1968 to 2003) with an average age of 53 years and the average follow-up was 85.3 months. There were a total of 5.3% (124 feet) failed prostheses. Improvement in pain was reported in 76.6% (1804 feet) with an average patient satisfaction rate of 84%. Radiological changes around the implants were found to be significantly higher with single-stemmed implants (30.3%) compared to the double-stemmed implants (14.7%) (p < 0.05).Significantly more single-stemmed implants failed (11%) than the double-stemmed implants (3.6%) (p < 0.05). Despite the initial reports of failed implants and complications, first- and second-generation silastic implants were associated with high patient satisfaction and pain improvement. Current literature lacks long-term outcomes of implants currently in use. Cite this article: EFORT Open Rev 2019;4:77-84. DOI: 10.1302/2058-5241.4.180055.
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Affiliation(s)
- Haroon Majeed
- Manchester University Foundation NHS Trust, Manchester, United Kingdom
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15
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Siclari A, Krueger JP, Endres M, Boux E. A 24-month follow-up after treatment of hallux rigidus with resection arthroplasty in combination with a resorbable polymer-based implant and platelet-rich plasma. Foot Ankle Surg 2018; 24:389-393. [PMID: 29409233 DOI: 10.1016/j.fas.2017.04.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 04/10/2017] [Accepted: 04/11/2017] [Indexed: 02/04/2023]
Abstract
BACKGROUND Aim of this study was to analyze the clinical outcome after treatment of hallux rigidus with implantation of a resorbable polymer-based implant immersed with autologous platelet-rich plasma (PRP). METHODS Forty-five patients with hallux rigidus were treated with three-stage resection arthroplasty and subsequent covering of the metatarsal head with a polyglycolic acid-hyaluronan implant immersed with autologous PRP. Patients were clinically assessed using the AOFAS rating scale preoperatively and at 12 and 24 month follow-up. Alignment and range of motion in the metatarsophalangeal joint was measured using a goniometer. RESULTS The AOFAS rating scale and ROM showed significant (p<.01) improvement in all subcategories one and two years after surgery compared to the preoperative situation. CONCLUSIONS Covering of the metatarsal head after resection arthroplasty with the PGA-hyaluronan implant immersed with autologous PRP is safe and leads to a notable improvement of the symptoms in patients with hallux rigidus.
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Affiliation(s)
- A Siclari
- Struttura Complessa di Ortopedia e Traumatologia, Ospedale degli Infermi di Biella ASLBI, Str. Cantone Rondolina 50, 13900 Biella, Piemonte, Italy.
| | - J P Krueger
- TransTissue Technologies GmbH, Charitéplatz 1, 10117 Berlin, Germany
| | - M Endres
- TransTissue Technologies GmbH, Charitéplatz 1, 10117 Berlin, Germany
| | - E Boux
- Struttura Complessa di Ortopedia e Traumatologia, Ospedale degli Infermi di Biella ASLBI, Str. Cantone Rondolina 50, 13900 Biella, Piemonte, Italy
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16
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17
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Roddy E, Menz HB. Foot osteoarthritis: latest evidence and developments. Ther Adv Musculoskelet Dis 2018; 10:91-103. [PMID: 29619094 DOI: 10.1177/1759720x17753337] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 12/18/2017] [Indexed: 01/13/2023] Open
Abstract
Foot osteoarthritis (OA) is a common problem in older adults yet is under-researched compared to knee or hand OA. Most existing studies focus on the first metatarsophalangeal joint, with evidence relating to midfoot OA being particularly sparse. Symptomatic radiographic foot OA affects 17% of adults aged 50 years and over. The first metatarsophalangeal joint is most commonly affected, followed by the second cuneometatarsal and talonavicular joints. Epidemiological studies suggest the existence of distinct first metatarsophalangeal joint and polyarticular phenotypes, which have differing clinical and risk factor profiles. There are few randomized controlled trials in foot OA. Existing trials provide some evidence of the effectiveness for pain relief of physical therapy, rocker-sole shoes, foot orthoses and surgical interventions in first metatarsophalangeal joint OA and prefabricated orthoses in midfoot OA. Prospective epidemiological studies and randomized trials are needed to establish the incidence, progression and prognosis of foot OA and determine the effectiveness of both commonly used and more novel interventions.
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Affiliation(s)
- Edward Roddy
- Reader in Rheumatology, Research Institute for Primary Care and Health Sciences, Keele University, Keele, Staffordshire, ST5 5BG, UK; and Haywood Academic Rheumatology Centre, Staffordshire and Stoke-on-Trent Partnership Trust, UK
| | - Hylton B Menz
- Research Institute for Primary Care and Health Sciences, Keele University, Keele, UK; and School of Allied Health, College of Science, Health and Engineering, La Trobe University, Melbourne, Victoria, Australia
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Stevens J, de Bot RT, Hermus JP, van Rhijn LW, Witlox AM. Clinical Outcome Following Total Joint Replacement and Arthrodesis for Hallux Rigidus. JBJS Rev 2017; 5:e2. [DOI: 10.2106/jbjs.rvw.17.00032] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Lam A, Chan JJ, Surace MF, Vulcano E. Hallux rigidus: How do I approach it? World J Orthop 2017; 8:364-371. [PMID: 28567339 PMCID: PMC5434342 DOI: 10.5312/wjo.v8.i5.364] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 03/20/2017] [Accepted: 04/10/2017] [Indexed: 02/06/2023] Open
Abstract
Hallux rigidus is a degenerative disease of the first metatarsalphalangeal (MTP) joint and affects 2.5% of people over age 50. Dorsal osteophytes and narrowed joint space leads to debilitating pain and limited range of motion. Altered gait mechanics often ensued as 119% of the body force transmit through the 1st MTP joint during gait cycle. Precise etiology remains under debate with trauma being often cited in the literature. Hallux valgus interphalangeus, female gender, inflammatory and metabolic conditions have all been identified as associative factors. Clinical symptoms, physical exam and radiographic evidence are important in assessing and grading the disease. Non-operative managements including nonsteroidal antiinflammatory drugs, intra-articular injections, shoe modification, activity modification and physical therapy, should always be attempted for all hallux rigidus patients. The goal of surgery is to relieve pain, maintain stability of the first MTP joint, and improve function and quality of life. Operative treatments can be divided into joint-sparing vs joint-sacrificing. Cheilectomy and moberg osteotomy are examples of joint-sparing techniques that have demonstrated great success in early stages of hallux rigidus. Arthrodesis is a joint-sacrificing procedure that has been the gold standard for advanced hallux rigidus. Other newer procedures such as implant arthroplasty, interpositional arthroplasty and arthroscopy, have demonstrated promising early patient outcomes. However, future studies are still needed to validate its long-term efficacy and safety. The choice of procedure should be based on the condition of the joint, patient’s goal and expectations, and surgeon’s experience with the technique.
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20
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Elliott AD, Borgert AJ, Roukis TS. A Prospective Comparison of Clinical, Radiographic, and Intraoperative Features of Hallux Rigidus: Long-Term Follow-Up and Analysis. J Foot Ankle Surg 2016; 55:547-61. [PMID: 26948243 DOI: 10.1053/j.jfas.2016.01.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Indexed: 02/03/2023]
Abstract
Forty-seven patients (50 feet) underwent surgical intervention for symptomatic hallux rigidus from February 1998 to April 1999. Thirty-eight patients (41 feet) returned at 1 year for a follow-up evaluation. Of these 38 patients, 20 (21 feet) returned for the 15-year follow-up evaluation. Subjective evaluations were performed using the modified American Orthopaedic Foot and Ankle Surgery hallux metatarsophalangeal-interphalangeal 100-point scale. Long-term postoperative objective physical examination and radiographic analysis were performed. These data were compared with the preoperative and short-term follow-up data. The subjective evaluation showed a statistically significant differing over the long term, with a mean increase of 27.6 points. The results of the physical examination and radiographic measurements were mixed. The long-term dorsal range of motion was not significant across surgery type. Radiographically, the procedure types resulted in similar changes, suggesting that neither joint preservation nor joint destructive procedures were more stable over time. Plantar transposition of the capital fragment, offsetting the longitudinal shortening of the first metatarsal, was not significant, confirming the short-term findings. For this patient population, the long-term results of surgical intervention for hallux rigidus, regardless of procedure type, provided subjective patient improvement but no statistically significant increase in first metatarsophalangeal joint function or dorsal range of motion.
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Affiliation(s)
| | - Andrew J Borgert
- Department of Medical Research, Gundersen Health System, La Crosse, WI
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21
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Nicolosi N, Hehemann C, Connors J, Boike A. Long-Term Follow-Up of the Cheilectomy for Degenerative Joint Disease of the First Metatarsophalangeal Joint. J Foot Ankle Surg 2015; 54:1010-20. [PMID: 25981441 DOI: 10.1053/j.jfas.2014.12.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Indexed: 02/03/2023]
Abstract
Cheilectomy is the surgical resection of 20% to 30% of the dorsal metatarsal head and proximal phalanx. The present retrospective study evaluated the long-term efficacy of aggressive cheilectomy to address degenerative joint disease of the first metatarsophalangeal joint. To our knowledge, this is the second longest duration study to date to evaluate the long-term efficacy of the cheilectomy procedure, with a mean follow-up period of 7.14 years (range 39 weeks to 14.87 years). The mean patient age was 55.71 ± 9.51 years, and 37 (65%) of the patients were female. Age, sex, foot type, and preoperative radiographic parameters of hallux rigidus were also evaluated and correlated. The mean percentage of success with this operation was 87.69%. Of the 58 patients, 51 (87.93%) experienced no limitations in their daily activities. Only 2 patients (3.33%) subsequently required subsequent arthrodesis. The results of the present study suggest that cheilectomy offers long-term satisfaction for patients with hallux rigidus and is an acceptable alternative to the joint destructive procedure of first metatarsophalangeal arthrodesis.
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Affiliation(s)
- Nicole Nicolosi
- Resident, Department of Podiatric Medicine and Surgery, HealthSpan/Cleveland Clinic, Cleveland, OH.
| | - Chris Hehemann
- Resident, Department of Podiatric Medicine and Surgery, HealthSpan/Cleveland Clinic, Cleveland, OH
| | - James Connors
- Resident, Department of Podiatric Medicine and Surgery, HealthSpan/Cleveland Clinic, Cleveland, OH
| | - Allan Boike
- Staff, Orthopaedic and Rheumatologic Institute, Cleveland Clinic, Cleveland, OH
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22
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Delman C, Kreulen C, Sullivan M, Giza E. Proximal Phalanx Hemiarthroplasty for the Treatment of Advanced Hallux Rigidus. Foot Ankle Clin 2015; 20:503-12. [PMID: 26320563 DOI: 10.1016/j.fcl.2015.05.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Multiple treatment options exist for the management of late-stage hallux rigidus. The goals of treatment are pain reduction and restoration of function. Arthrodesis remains the treatment of choice, but recent advances support the use of first metatarsophalangeal hemiarthroplasty as a viable and successful option in properly selected patients in whom preservation of motion and function are desirable.
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Affiliation(s)
- Connor Delman
- Department of Orthopaedics, University of California, Davis, 4860 Y Street, Suite 3800, Sacramento, CA 95817, USA
| | - Chris Kreulen
- Department of Orthopaedics, University of California, Davis, 4860 Y Street, Suite 3800, Sacramento, CA 95817, USA
| | - Martin Sullivan
- Foot & Ankle Clinic, St. Vincents Clinic, Suite 901E, 438 Victoria Street Darlinghurst, Sydney, Australia
| | - Eric Giza
- Department of Orthopaedics, University of California, Davis, 4860 Y Street, Suite 3800, Sacramento, CA 95817, USA.
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23
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Zelen CM, Snyder RJ, Serena TE, Li WW. The use of human amnion/chorion membrane in the clinical setting for lower extremity repair: a review. Clin Podiatr Med Surg 2015; 32:135-46. [PMID: 25440424 DOI: 10.1016/j.cpm.2014.09.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Unsuccessful healing represents a significant medical dilemma for both patients and clinicians and create a financial burden on the health care system. Despite the efforts of physicians, many injuries fail to heal with standard care alone. For decades human amniotic membrane composed of both amnion and chorion has shown remarkable therapeutic potential, but only recent preservation methods have allowed its widespread use. Variations in configurations and the ability to micronize the material allow clinical uses that were previously not possible. Although there are limited data available regarding most amniotic membrane-based products, there is substantial preclinical and clinical evidence supporting the rationale and effectiveness of dHACM allograft as a treatment modality. The rapidly growing body of evidence suggests that the properties inherent in dHACM promote tissue regeneration and healing, recruiting patients' own stem cells into the wounded area. Randomized controlled trials evaluating dHACM now include more than 200 patients collectively and the results consistently show improved healing. Use of dHACM has been shown to be more clinically effective and cost-effective than other frequently used advanced wound care products. This cost-effectiveness results from dHACM showing higher healing rates and more rapid healing than other advanced wound care products. Cost-effectiveness is also enhanced through the availability of grafts of multiple sizes, which reduces wastage, and through ease of handling and storage for clinical use. Ongoing and future studies will further define and establish the value of amniotic membrane for chronic tissue repair and regeneration.
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Affiliation(s)
- Charles M Zelen
- Professional Education and Research Institute, Inc, Foot and Ankle Associates of Southwest Virginia, 222 Walnut Avenue, Roanoke, VA 24016, USA.
| | - Robert J Snyder
- Barry University School of Podiatric Medicine, 11300 NE 2nd Avenue, Miami Shores, FL 33161, USA
| | - Thomas E Serena
- SerenaGroup Wound and Hyperbaric Centers, 90 Sherman Street, Cambridge, MA 02140, USA
| | - William W Li
- The Angiogenesis Foundation, PO Box 425007, Cambridge, MA 02142, USA
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