Fit assessment of two different anatomically contoured distal femur plate sets on cadaveric bones
Abstract
Objectives: This study aims to investigate the fitness of two
anatomic distal femoral plates with cadaveric femurs and to
show whether current plates optimally match each femur.
Materials and methods: Two different sets of plates
with five, seven and nine shaft holes were applicated on
62 cadaveric femurs. Ball clay was molded onto the entire
inner surfaces of the plates and then the plates were fixed
to the bones using two self-locking nylon cable zip ties. The
volume of ball clay sandwiched in between the plate and bone
was calculated and used as a quantitative fit parameter. Data
of each plate were analyzed separately.
Results: Using Double Medical Technology IncorporatedTM
plates, the mean plate to bone volumes were calculated as
8.4 mL (range, 5-14 mL), 10.0 mL (range, 6-17 mL), and
13.1 mL (range, 7-25 mL) in five, seven and nine-hole plates,
respectively. Using Zimmer Biomet IncorporatedTM plates,
the mean volumes were 10.5 mL (range, 6-21 mL), 12.7 mL
(range, 7-22 mL) and 16.3 mL (range, 8-30 mL) in five, seven
and nine-hole plates, respectively. Within each group, the
measurements were significantly correlated positively with
femoral length.
Conclusion: Optimal fit may not be achieved in each femur
using current distal femoral plate implant sets. Thus additional
sizes of plates should be supplied in the implant sets. Amaç: Bu çalışmada iki anatomik distal femur plağının
kadavra femurlarıyla uyumluluğu araştırıldı ve mevcut
plakların her femura en iyi şekilde uyup uymadığı gösterildi.
Gereç ve yöntemler: Gövdesinde beş, yedi ve dokuz deliği
olan iki farklı plak seti 62 kadavra femuruna uygulandı.
Plakların tüm iç yüzeyleri seramik çamuruyla sıvandı,
sonra plaklar iki adet kendinden kilitli naylon kablo bağı
kullanılarak kemiklere sabitlendi. Plak ve kemik arasında
sıkıştırılan seramik çamurunun hacmi hesaplanarak nicel
uyum parametresi olarak kullanıldı. Her plağın verileri ayrı
ayrı analiz edildi.
Bulgular: Double Medical Technology IncorporatedTM
plakları kullanıldığında, plak ile kemik arasındaki hacim
ortalamaları beş, yedi ve dokuz delikli plaklarda sırasıyla
8.4 mL (dağılım, 5-14 mL), 10.0 mL (dağılım, 6-17 mL)
ve 13.1 mL (dağılım, 7-25 mL) olarak hesaplandı. Zimmer
Biomet IncorporatedTM plakları kullanıldığında, hacim
ortalamaları beş, yedi ve dokuz delikli plaklarda sırasıyla
10.5 mL (dağılım, 6-21 mL), 12.7 mL (dağılım, 7-22 mL) ve
16.3 mL (dağılım, 8-30 mL) idi. Her grup içinde, ölçümler
femur uzunluğu ile pozitif olarak anlamlı şekilde bağıntılı idi.
Sonuç: Mevcut distal femur plağı implant setleri kullanılarak
her femurda en iyi uyum elde edilemeyebilir. Bu nedenle,
implant setlerinde ilave boyutlarda plaklar sağlanmalıdır.
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