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MAÏA® (Lépine) CMC 1 Prosthesis Didier FONTÈS (Sports Clinic of Paris France)

MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

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Page 1: MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

MAÏA® (Lépine) CMC 1 Prosthesis Didier  FONTÈS  (Sports  Clinic  of  Paris  -­‐  France)  

Page 2: MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

The design of the Prosthesis

Page 3: MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

The MAÏA® Prosthesis (Groupe Lépine)

The  implants  

The  technical  m

aterial  

Page 4: MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

The Surgical Technique

The Surgical Procedure for MAÏA Prosthesis implatation

Exposure,  prepara?on  and  impac?on  of  the  press-­‐fit  cup  Prepara?on,  impac?on  of  the  defini?ve  stem,  reduc?on  

Page 5: MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

Important tips and tricks during implantation of the Maïa® prosthesis

§  Perfect  centering  of  the  cup  (+/-­‐  Rx  control)  

§  Preserve  trapezium  walls  during  milling  

§  Polyethylene  cup  must  overtake  Tz  surface  aLer  impac?on  

§  Right  tension  with  2  mm  axial  piston  during  try  

§  APL  tendon  dorsaliza?on  during  capsular  closing  

Page 6: MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

Our personal indications and contra-indications

§  Eaton  I-­‐II-­‐III  class  or  Badia  class  II-­‐III,  resistant  to  codified  medical  R  

§  No  STT  symptoma?c  arthri?s  

§  Trapezium  height  >  5  mm  

§  No  dominant  hand  of  heavy  laborers  

§  No  work  compensa?on  nore  previous  prosthesis  

§  Z  deformity  is  not  a  CI  

Eaton  Classifica?on  

04/02/12 10:48

Page 1 sur 1http://217.128.178.35/sauvegarde_jpeg.php?17-jd2hjuvkm78bt3fk…542293-1-1.625144307314352-0-0-2079-1576-256-1.0-no_inversion

Page 7: MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

Series - References

1.  Analyse  du  confort  post-­‐opératoire  et  des  résultats  fonc?onnels  précoces  dans  le  traitement  de  la  rhizarthrose.  Etude  prospec?ve  et  compara?ve  trapézectomie-­‐interposi?on  vs  prothèse  MAIA  -­‐  Thèse  de  Médecine  2010:  Thomas  Jager  (dir.  De  Thèse  Gilles  Dautel)  

2.  La  prothèse  trapézométacarpienne  Maïa  dans  la  rhizarthrose  –  Revue  de  100  prothèses  à  plus  de  3  ans  –  J.  Teissier  (Chir  de  la  Main  2011)  

3.  Intérêt  et  mise  au  point  d’un  essai  de  résistance  en  fa?que  mécanique  du  col  d’une  prothèse  trapézo-­‐métacarpienne.  Applica?on  à  la  prothèse  Maïa  –  T.  Aslanian  (Chir  de  la  Main  2011)  

Page 8: MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

Post-operative Assessment

Clinical  assessment  

Page 9: MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

Post-operative Assessment

Radiological  assessment  

Protrusion  of  the  cup  

Page 10: MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

Clinical Results at short follow-up (6 months versus Tzectomy)

Page 11: MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

§  M1  lengthening  +3,4mm  

§  Sublux  reduc?on  1  cm  

§  Good  centering  in  80%  cases  §  Osseous  integra?on  in  64%  

(no  cup  protrusion,  good  angular  stability,  no  peri  prosthe?c  bright  space)  

§  2%  mobiliza?on  (1  necessity  of  a  Tzectomy)  

Radiological Results at short follow-up (6 months versus Tzectomy)

Good  clinical  func?on  Bad  clinical  func?on  =>  Tzectomy  

Page 12: MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

71,3  

22,2  

4,8  1,6  

0  

10  

20  

30  

40  

50  

60  

70  

80  

Very  sa?sfied   Sa?sfied   medium  sa?sfied   bad  result  

Subjec8ve  Sa8sfac8on  

Results at follow up > 4 years (J. Tessier – 100 prosthesis)

93,6  %  global  sa?sfac?on  

95,6%  of  survival  probability  at  4  years  follow  up  

Page 13: MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

Results at follow up > 4 years (J. Tessier – 100 prosthesis)

9,7  2  

Males  :  9,4  Kg  /  9,3  Kg    

Females:  5,3  Kg  /  5,5  Kg    

Clinical  evalua?on  

Page 14: MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

Results at follow up > 4 years (J. Tessier – 100 prosthesis)

Radiological  evalua?on  

§  Cup  osteolysis  seam  17,4%  

§  Around  M1  stem  8,2%  

(no  clinical  consequence)  

§  Peri  prosthe?c  ossifica?ons  (frequent  but  not  symptoma?c  /  

arc  of  mo?on)  

§  Cup  protrusion  3,2%  §  Cup  mobiliza?on  4,7%  

Page 15: MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

Results at follow up > 4 years (J. Tessier – 100 prosthesis)

Complica?ons  

§  3  removal  of  the  prosthesis  §  1  disloca?on  (close  

reduc?on)  §  4  Sudeck  dystrophy    

syndromes  §  2  de  Quervain  tenosynovi?s  §  1  cup  unsealing  §  1  trauma?c  Tz  fracture  

Page 16: MAÏA® (Lépine) CMC 1 Prosthesis · 2015. 10. 5. · 4,8 1,6 0 10 20 30 40 50 60 70 80 Very&sasfied& Sasfied& medium&sasfied& bad&result Subjec8veSasfac8on Results at follow

Advantages of MAÏA® PROSTHESIS

§  Large  indica?ons  (small  Trapezium)  §  Large  panel  of  configura?ons  §  Quick  pain  free  func?on  recovery  §  Rare  disloca?ons  (reten?ve  cups)  §  Z  deformity  and  1st  column  length  can  

be  corrected  §  In  case  of  failure,  Trapezectomy  =  

simple  alterna?ve  

Our  Preferred  treatment  of  Eaton  class  II-­‐III  CMC  1  ArthriEs