Anthropometric study of the knee and its correlation with the size of three implants available for arthroplasty

Loures, Fabrício Bolpato; Góes, Rogério Franco de Araújo; Palma, Idemar Monteiro da; Labronici, Pedro José; Granjeiro, José Mauro; Olej, Beni

doi:10.1016/j.rboe.2015.07.009

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ORIGINAL ARTICLE • Rev. bras. ortop. 51 (03) • May-Jun 2016 • https://doi.org/10.1016/j.rboe.2015.07.009 copy

Anthropometric study of the knee and its correlation with the size of three implants available for arthroplasty^{^☆} ☆ Study conducted at Hospital Santa Teresa de Petrópolis, RJ, Brazil.

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

OBJECTIVE:

To define the anthropometric profile of the knee in a Brazilian population with gonarthrosis using intraoperative measurements; and to evaluate the compatibility of three implants available for total knee arthroplasty.

METHODS:

Morphometric data were collected prospectively from 117 subjects with gonarthrosis. Six dimensions in the distal femur and two in the proximal tibia were documented in 118 knees while performing total arthroplasty. These data were compared with the dimensions of three implants available for total knee arthroplasty.

RESULTS:

The statistical analysis showed that more than a quarter of the patients presented an unsatisfactory relationship between the knee and prosthesis.

CONCLUSION:

The implants evaluated need to be adjusted to better fit Brazilian patients.

Keywords:
Arthroplasty knee; Anthropometry; Femur; Tibia

Variable	Number of knees	Percentage
Gender
Male	33	28.0%
Female	85	72.0%

Side
Right	60	50.8%
Left	58	49.2%

Ethnicity
White	105	89.0%
Mixed-race	9	7.6%
Black	4	3.4%

Gender	Number of knees	Total width^a	Height of the lateral condyle^a	Relative index
Male	33	77.7 (±4.9)	70.3 (±4.7)	111% (±7.1%)
Female	85	67.8 (±4.0)	61.5 (±4.9)	111% (±10.4%)

Total	118	70.6 (±6.1)	64.0 (±6.3)	111% (±9.6%)

Gender	Number of knees	Mediolateral width^a	Anteroposterior width^a	Relative index
Male	33	79.8 (±5.8)	53.9 (±6.1)	150% (±22.1%)
Female	85	69.6 (±4.3)	46.0 (±4.0)	152% (±15.3%)

Total	118	72.4 (±6.6)	48.2 (±5.9)	152% (±17.4%)

Prosthesis	ICC	95% CI	p-value
Scorpio^®	0.592	0.462–0.698	<0.0001
Natural Knee^®	0.534	0.392–0.651	<0.0001
NexGen^®	0.547	0.407–0.661	<0.0001

Gender	Male		Female
Prosthesis/incompatibility	Underhang^a	Overhang^a	Underhang^a	Overhang^a
Scorpio^®	9	1	18	7
NexGen^®	13	1	12	8
Natural Knee^®	9	1	13	10

Total	31 (31.3%)	3 (3%)	43 (16.9%)	25 (9.8%)

Prosthesis	p-value^a
Scorpio^®vs. Nex Gen^®	0.88
Scorpio^®vs. Natural Knee^®	0.23
NexGen^®vs. Natural Knee^®	0.15

Authors	Population	Method	LTF	ACL	RI
Mensch et al. (1975)²⁷	American	Cadavers and X-rays	69.7 ± 2.7(F) 81.1 ± 3.4(M)	69.9 ± 2.6(F) 67.9 ± 3.3(M)	99% 119%
Vaidya et al. (2000)¹⁸	Indian	CT		55.58(F) 61.09(M)
Hitt et al. (2003)⁹	American	Intraoperative	72.4 ± 8.3	64.3 ± 4.7	112%
Ho et al. (2006)¹⁰	Chinese	Intraoperative	70.2 ± 5.4	63.7 ± 5.1	109%
Lonner et al. (2008)²⁸	American	Intraoperative	67.49(F) 76.92(M)	66.79(F) 74.22(M)	101% 104%
Ewe et al. (2009)²⁰	Chinese. Malaysian. and Indian	Intraoperative (navigation)	63.83(F) 72.45(M)	59.14(F) 64.55(M)	108% 109%
Chaichankul et al. (2010)^15a	Thai	MRI	59.9 ± 3.7(F) 70.1 ± 3.8(M)	43.3 ± 3.6(F) 48.5 ± 3.7(M)	138% 144%
Kwak et al. (2010)¹⁶	Korean	CT in cadavers	65.9(F) 74.4(M)	41.2(F) 46.2(M)	160% 161%
Chin et al.²⁹ 2011^b	Chinese, Malay, Indian, and others	Intraoperative	63.0(F) 73.0(M)	66.5(F) 71.3(M)	95% 102%
Yue et al. (2011)³⁰	Chinese and American	CT MRI	72.8 ± 2.6(CF) 76.4 ± 4.0(AF) 82.6 ± 3.6(CM) 86.0 ± 5.6(AM)	58.8 ± 2.5(CF) 59.7 ± 2.6(AF) 65.0 ± 2.8(CM) 67.5 ± 3.6(AM)	124% 128% 127% 128%
Dargel et al. (2011)¹²	German	Cadavers	61.5 ± 3.39(F) 70.5 ± 3.79(M)	63.1 ± 3.82(F) 69.3 ± 2.50(M)	97% 102%
Ha et al. (2012)¹⁹	Korean	Intraoperative	68.2(F) 74.8(M)	60.8(F) 66.3(M)	112% 113%
Guy et al. (2012)¹³	English	Intraoperative	64.1 ± 2.6(F) 74.9 ± 3.9(M)	65.5 ± 5.32(F) 73.5 ± 4.5(M)	98% 102%
Terzidis et al. (2012)³¹	Caucasian (Greeks)	Cadaves (dry bones)	78.5 ± 3.0(F) 88.6 ± 4.2(M)	55.4 ± 2.1(F) 61.1 ± 3.3(M)	142% 145%
Li et al. (2014)³²	Chinese and American	MRI	64.4 ± 2.6(CF) 72.7 ± 3.8(CM) 65.4 ± 1.4(AF) 74.6 ± 3.9(AM)	52.8 ± 2.6(CF) 56.5 ± 2.5(CM) 55.4 ± 2.8(AF) 59.6 ± 3.2(AM)	122% 129% 118% 125%
Present study 2012 2013	Brazilian	Intraoperative	67.8 ± 4.0(F) 77.7 ± 4.9(M)	61.5 ± 4.9(F) 70.3 ± 4.7(M)	111% 111%

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E-mail: rbo@sbot.org.br

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[1] *Corresponding author. E-mail: fbolpato@gmail.com (F.B. Loures).

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Anthropometric study of the knee and its correlation with the size of three implants available for arthroplasty☆ ☆ Study conducted at Hospital Santa Teresa de Petrópolis, RJ, Brazil.

ABSTRACT

OBJECTIVE:

METHODS:

RESULTS:

CONCLUSION:

Anthropometric study of the knee and its correlation with the size of three implants available for arthroplasty^{^☆} ☆ Study conducted at Hospital Santa Teresa de Petrópolis, RJ, Brazil.