Why a TMC prosthesis rather than a trapezectomy ?

?

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2

Ulrich-Vinther M, Puggaard MS, Lange B. Prospective 1 year follow -up study comparing joint prosthesis with tendon interposition arthroplasty in treatment of trapeziometacarpal osteoarthritis. J Hand Surg Eur. 2009;34:503-5

PTM TPZ

PTM TPZ

TM osteoarthritis with a Total TM prosthesis

SHORT TERM RESULTS

• «Self correction in moderate Z deformity

• With Associated procedure in severe Deformity

Correction of Z Thumb-deformity

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TM osteoarthritis with a Total TM prosthesis

Thanks to J.L BOVET

Evaluation of postoperative pain and early functional results in the

treatment of basal joint arthritis.

Comparative prospective study of trapeziectomy vs. MAIA®

in 74 female patients.

Chir Main. 2013 Apr

Jager T, Barbary S, Dap F, Dautel G.

n = 47

MAïA TPZ

n = 27

Pain reduction

Mobility

Strength

Functional scores

Satisfaction

PAIN Tpz > Maïa

ROM Maïa > Tpz

TpzRight Hand

Maïa Left Hand

FORCE Maïa > Tpz

Fonctional Score

Maïa > Tpz

0

13

25

38

50

Moineau 3mois

Moineau 6mois

Gain 400 pts Quick Dash

MAIA TPZ

Sieving Test

Pain

Mobility

Force

Cosmetic

Maïa Tpzn=47 n=27

65,8%n=31 n=27,8%

n

N

prepost

MHQ Work Score

prepost

Strench Pinch

prepost

Antepulsion

prepost

Thumb lenght

J + 9 ans

31

33

15 12

PTM TPZ

6 patients PTM / TPZ PTM > TPZJ + 9 ans

KAPLAN-MEIER (second look)

70

75

80

85

90

95

100

J0 J+9 ans