Recherche
rencontres stephanoises epaule 5

Les publications sont indexées sur les moteurs de recherche scientifique comme pubmed, researchgate ou google scholar.

En lien ci-dessous quelques travaux publiés dans les revues scientifiques :

 

Int Marit Health. 2017;68(1):70-71. doi: 10.5603/IMH.2017.0012.

 

J Trauma Acute Care Surg. 2017 Feb 28. doi: 10.1097/TA.0000000000001399.

Ballas R1, Saetta G, Peuchot C, Elkienbaum P, Poinsot E.

Joint Bone Spine. 2017 Jan 3. pii: S1297-319X(16)30246-9. doi: 10.1016/j.jbspin.2016.12.009

Ballas R1, Caduc M2, Ovigue J3, Elkienbaum P3, Sauvat F4.

 

  • Suivi de 14 ans d’une ostéolyse massive de la ceinture pelvienne causée par une anomalie lymphatique (maladie de Gorham-Stout).

Revue du Rhumatisme. 2017. doi: 10.1016/j.rhum.2017.03.026

Ballas R, Caduc M, Ovigue J, Elkienbaum P, Sauvat F.

 

Int Orthop. 2016 Feb 24.

Ballas R1,2, Teissier P3,4, Teissier J5.

 

Arch Orthop Trauma Surg. 2013 Mar;133(3):397-403. doi: 10.1007/s00402-012-1666-5. Epub 2012 Dec 11.

Ballas R1, Philippot R, Cartier JL, Boyer B, Farizon F.

 

Bone Joint J. 2016 May;98-B(5):641-6. doi: 10.1302/0301-620X.98B5.36406.

Ballas R1, Edouard P2, Philippot R3, Farizon F3, Delangle F4, Peyrot N5.

 

J Shoulder Elbow Surg. 2013 Sep;22(9):e1-6. doi: 10.1016/j.jse.2012.12.005. Epub 2013 Feb 15.

Ballas R1, Béguin L.

 

J Hand Surg Am. 2015 Jan;40(1):148-51. doi: 10.1016/j.jhsa.2014.10.018. Epub 2014 Nov 20.

Ballas R1, Fattal C2, Teissier J2.

 

  • Forces de réaction au sol après chirurgie de l’hallux valgus. Comparaison des techniques de scarf et d’arthrodèse de la première articulation métatarso-phalangienne.

Revue de Chirurgie Orthopédique et Traumatologique. 2012;98(7):S331

Ballas R, Philipot R, Edouard P, Peyrot N, Delangle F, Farizon F.

 

Orthop Traumatol Surg Res. 2012 Feb;98(1):118-21. doi: 10.1016/j.otsr.2011.09.015. Epub 2011 Dec 28.

 

  • Migration endopelvienne d’une broche de fixation sternoclaviculaire. Cas clinique et revue de la littérature.

Revue de Chirurgie Orthopédique et Traumatologique. 2012;98(1):111‑5.

Ballas R, Bonnel F.

 

  • Intérêt d’une prothèse d’épaule sans tige dans le traitement des séquelles de fracture de l’extrémité proximale de l’humérus.

Revue de Chirurgie Orthopédique et Traumatologique. 2011;97(7):S261.

Ballas R, Teissier P, Teissier J.

 

  • Résultats d’une prothèse inversée d’épaule sans tige : à propos de 71 cas à 3ans de recul.

Revue de Chirurgie Orthopédique et Traumatologique. 2011;97(7):S290‑1.

Ballas R, Béguin L.

 

 

Les travaux réalisés en collaboration avec le Dr Teissier (Montpellier, Shoulder Unit Surgery, Hopital Saint-Jean) ont été publiés dans International Orthopaedics. Les principaux résultats montrent que grâce à cette implant moderne sans tige, il est possible d’opérer les cas compliqués d’arthrose post traumatisme (fracture, nécrose…) sans réaliser d’ostéotomie afin de réduire les complications.

 

Ballas - Stemless shoulder prosthesis for treatment of proximal humeral malunion does not require tuberosity osteotomy

Ballas – Stemless shoulder prosthesis for treatment of proximal humeral malunion does not require tuberosity osteotomy

L’absence d’ostéotomie humérale est un atout majeur, améliorant les résultats post-opératoires et diminuant les complications.

L’article est référencé pubmed : http://www.ncbi.nlm.nih.gov/pubmed/26907878, The final publication is available at link.springer.com. Ballas – Stemless shoulder prosthesis for treatment of proximal humeral malunion does not require tuberosity osteotomy.

Int Orthop. 2016 Feb 24. [Epub ahead of print]

Stemless shoulder prosthesis for treatment of proximal humeral malunion does not require tuberosity osteotomy.

Author information

  • 1Service de chirurgie orthopédique, Hôpital de Saint-Pierre, Université de La Réunion, BP 350, 97448, Saint-Pierre Cedex, Ile de La Réunion, France. richardballas@yahoo.fr.
  • 2Laboratoire IRISSE (EA4075), UFR SHE, Université de La Réunion, Le Tampon, Ile de La Réunion, France. richardballas@yahoo.fr.
  • 3OrthoSud Shoulder Unit, Clinique Saint-Jean, Montpellier, France.
  • 4Service de chirurgie orthopédique, CHU Carémeau, Nimes, France.
  • 5Hand and Upper Limb Institute, 15, avenue du Professeur Grasset, 34000, Montpellier, France.

Abstract

PURPOSE:

When the proximal humeral anatomy is altered because of malunion, shoulder arthroplasty is a challenge for the orthopaedic surgeon, and tuberosity osteotomy should be avoided whenever possible. The purpose of this study was to investigate the clinical and radiological outcomes of anatomic stemless shoulder arthroplasty in cases of malunion. We hypothesized that a stemless prosthesis can be implanted without performing tuberosity osteotomy.

METHODS:

We conducted a continuous, single surgeon, retrospective case series study with a minimum follow-up of two years (mean of 44 months, range 24-80). The Constant-Murley score, active range of motion and X-rays were evaluated in 27 patients (mean age of 60 years, range 37-83) with proximal humeral malunion who were treated with a stemless anatomic shoulder prosthesis.

RESULTS:

In all patients, the prosthesis was implanted without the need for tuberosity osteotomy. The Constant score improved from 27 to 62 (p ≤ 0.001), active anterior elevation from 81° to 129° (p ≤ 0.001), and external rotation from 5° to 40° (p ≤ 0.001). There was no evidence of radiological loosening.

CONCLUSIONS:

Use of a stemless anatomic shoulder prosthesis avoids the need for tuberosity osteotomy and certain surgical difficulties, even in cases of severe tuberosity malunion, and leads to good functional outcomes in the short term.

KEYWORDS:

Proximal humeral malunion; Shoulder; Shoulder arthroplasty; Stemless arthroplasty; Stemless shoulder prosthesis

 

Prothèse de genou et chirurgie assistée par ordinateur

Ballas-AOTS-2012-Computer-assisted-total-knee--arthroplasty-impact-of-the-surgeon's-experience-on-the-component-placement

Arch Orthop Trauma Surg. 2013 Mar;133(3):397-403. doi: 10.1007/s00402-012-1666-5. Epub 2012 Dec 11.

Computer-assisted total knee arthroplasty: impact of the surgeon’s experience on the component placement.

Author information

  • 1Department of Orthopedic Surgery, University of Reunion Island, Hospital of Saint-Pierre, BP 350, Saint Pierre Cedex, France. richardballas@yahoo.fr

Abstract

INTRODUCTION:

Accuracy of implant positioning in total knee arthroplasty (TKA) has a major impact on postoperative outcomes. We investigate the accuracy of positioning of multiples values simultaneously in TKA navigated, even among novice users.

METHOD:

The “novice” group included the first 91 knees operated on by 10 operators new to navigation and the “experienced” group 174 knees by an experienced navigator. Deviations from the preoperative planning were graded as optimal (≤3°), acceptable (4°-5°) or non-acceptable (≥5°). Moreover, the percentage of the three values fulfilling simultaneously the objective was calculated.

RESULTS:

No significant difference in the number of non-acceptable results was found. The common objective for these three values was achieved within 5° in 96 % in the novice group and 98 % in the experienced one.

CONCLUSION:

The satisfactory HKA alignment was not the result of reversed errors between the tibia and the femur, since it correlated the successful simultaneous results of alpha and beta angles.

Chirurgie du pied pour hallux valgus, récupération de la propulsion de la marche après chirurgie de scarf ou arthrodèse.

Aanalyse de la marche, biomécanique

Ballas-JBJSBr-Ground-reactive forces after hallux valgus surgery comparison of scarf osteotomy and arthrodesis of the first metatarsophalangeal joint

chirurgie hallux valgus

chirurgie hallux valgus

chirurgie hallux valgus

chirurgie hallux valgus

Bone Joint J. 2016 May;98-B(5):641-6. doi: 10.1302/0301-620X.98B5.36406.

Ground-reactive forces after hallux valgus surgery: comparison of Scarf osteotomy and arthrodesis of the first metatarsophalangeal joint.

Author information

 Abstract

AIMS:

The purpose of this study was to analyse the biomechanics of walking, through the ground reaction forces (GRF) measured, after first metatarsal osteotomy or metatarsophalangeal joint (MTP) arthrodesis.

PATIENTS AND METHODS:

A total of 19 patients underwent a Scarf osteotomy (50.3 years, standard deviation (sd) 12.3) and 18 underwent an arthrodesis (56.2 years, sd 6.5). Clinical and radiographical data as well as the American Orthopaedic Foot and Ankle Society (AOFAS) scores were determined. GRF were measured using an instrumented treadmill. A two-way model of analysis of variance (ANOVA) was used to determine the effects of surgery on biomechanical parameters of walking, particularly propulsion.

RESULTS:

Epidemiological, radiographical and clinical data were comparable in the two groups and better restoration of propulsive function was found after osteotomy as shown by ANOVA (two way: surgery × foot) with a surgery effect on vertical forces (p < 0.01) and a foot effect on anteroposterior impulse (p = 0.01).

CONCLUSION:

Patients who underwent Scarf osteotomy had a gait pattern similar to that of their non-operated foot, whereas those who underwent arthrodesis of the first (metatarsophalangeal) MTP joint did not totally recover the propulsive forces of the forefoot.

TAKE HOME MESSAGE:

The main findings of this study were that after surgical correction for hallux valgus, patients who underwent scarf osteotomy had a gait pattern similar to that of their non-operated foot in terms of forefoot propulsive forces (Fz3, Iy2), whereas those who underwent arthrodesis of the first MTP joint had not. Cite this article: Bone Joint J 2016;98-B:641-6.

©2016 The British Editorial Society of Bone & Joint Surgery.

KEYWORDS:

Ground reaction forces; Scarf osteotomy; first metatarsophalangeal arthrodesis; hallux valgus; treadmill ergometer

Les prothèses d’épaule de dernière génération

ballas---Results-of-a-stemless-reverse-shoulder-prosthesis-at-more

J Shoulder Elbow Surg. 2013 Sep;22(9):e1-6. doi: 10.1016/j.jse.2012.12.005. Epub 2013 Feb 15.

Results of a stemless reverse shoulder prosthesis at more than 58 months mean without loosening.

Author information

  • 1Department of Orthopaedic Surgery, University Hospital Center of La Réunion Island, Saint-Pierre, La Réunion, France. richardballas@yahoo.fr

Abstract

HYPOTHESIS:

A stemless reverse shoulder prosthesis with humeral cup was developed to allow stemless press-fit fixation, to preserve bone stock. Our hypothesis was that a stemless reverse shoulder arthroplasty could produce the same functional results without compromising humeral fixation.

METHODS:

This is a continuous, prospective, single-surgeon series including prostheses implanted from 2004 to 2009. Patients received pre- and postoperative clinical evaluation with measurement of joint mobility, the Oxford Shoulder score, and the Constant-Murley score by independent evaluators. Standard radiographs and computed tomographic arthrography were performed.

RESULTS:

Fifty-six implants were reviewed at a mean of 58 months (38-95). The Constant-Murley score improved from 29 to 62 points and the Oxford Shoulder score from 46 to 17 points. Active elevation in forward flexion improved from 79° to 140°. One intraoperative complication was recorded: a metaphyseal-diaphyseal humeral bone crack without consequence. One revision surgery due to early instability was performed using a conventional implant. No humeral loosening was observed. Five cases of scapular notching were reported.

CONCLUSION:

This is the first study reporting results with mid-term follow-up for a stemless reverse shoulder arthroplasty. The clinical results are comparable to conventional prostheses with stem. The absence of a humeral stem preserves bone stock for possible later revisions.

Copyright © 2013 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Mosby, Inc. All rights reserved.

KEYWORDS:

Cases Series; Level IV; Shoulder arthroplasty; Treatment Study; reverse shoulder arthroplasty; stemless prosthesis

Chirurgie de la main chez le patient tétraplégique, réanimation du membre supérieur

Ballas-JHSAm-Buntine

J Hand Surg Am. 2015 Jan;40(1):148-51. doi: 10.1016/j.jhsa.2014.10.018. Epub 2014 Nov 20.

Anterior glenohumeral joint stabilization in tetraplegic patients by medializing the anterior head of deltoid muscle.

Author information

  • 1Department of Orthopedic Surgery, Hospital of Saint-Pierre, University of La Réunion Island, Saint-Pierre, La Réunion Island; Laboratoire DIMPS, Le Tampon, Ile de La Réunion; Centre Mutualiste Neurologique Propara and the Hand and Upper Limb Institute, Montpellier, France. Electronic address: richardballas@yahoo.fr.
  • 2Department of Orthopedic Surgery, Hospital of Saint-Pierre, University of La Réunion Island, Saint-Pierre, La Réunion Island; Laboratoire DIMPS, Le Tampon, Ile de La Réunion; Centre Mutualiste Neurologique Propara and the Hand and Upper Limb Institute, Montpellier, France.

Abstract

To improve control of the upper limb in high-level tetraplegic patients, the proximal shoulder must be the first consideration. Medialization of the anterior part of the deltoid muscle provides stabilization and is then an antagonist to the posterior deltoid when a pectoralis major palsy exists. It can also be performed in isolation in high-level tetraplegia even when there is little hope of distal extremity reconstruction to stabilize the shoulder. It also precedes the ability to restore elbow extension and perform further reconstructive hand surgery. We describe the surgical technique and report a clinical case.

Copyright © 2015 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.

KEYWORDS:

Tetraplegia; deltoid; elbow paralysis; shoulder paralysis; tendon transfer

 

La chirurgie de l’épaule et ses complications

RCOT-final

OTSR_480-corrected

Orthop Traumatol Surg Res. 2012 Feb;98(1):118-21. doi: 10.1016/j.otsr.2011.09.015. Epub 2011 Dec 28.

Endopelvic migration of a sternoclavicular K-wire. Case report and review of literature.

Author information

  • 1Beau-Soleil Private Hospital, Orthopedics Department, Montpellier, France. richardballas@yahoo.fr

Abstract

We report a unique case, never before published, of sternoclavicular joint fixation K-wire migration to the pelvic region, in a 56 year-old man. Two years previously, sternoclavicular dislocation had been fixed by three wires. A transitory episode of precordial thoracic pain followed by iterative abdominal pain accompanied the migration. Extraction was performed five years later. Scapular K-wire migration is frequent. The proximity of cardiovascular structures may have fatal consequences. This type of internal fixation raises questions, and migration prevention needs to be taken into account. Medical complications and the legal context are major factors leading us to abandon this type of osteosynthesis. Once migration has been diagnosed, the wire should be removed without delay.

Copyright © 2011 Elsevier Masson SAS. All rights reserved.