Journal of Hand Surgery - June 2022 - S211

Abstract
S211
the TFCC and a follow-up of less than one year.
Comparative range of motion and grip strength,
Ballottement test, pain using the visual analog
scale (VAS) and modified Quick Dash and Mayo functional
scores were clinically evaluated, in the preoperatory
and at six and twelve months postoperative.
Results: A total of 36 patients (13 female - 23 male)
with a minimum follow-up of three months and a
maximum of three years were evaluated. The
median age was 36 years (range 19-66 years). The
average range of motion (ROM) at one year was: flexion
79 (89% of the contralateral), extension 76
(89%), ulnar deviation 38 (86%), radial deviation
12 (76%), pronation 77 (91%) and supination 82
(92%). The average grip strength was 46 pounds
(79%). Pain improved significantly with an average
(VAS) of 8.3 preoperatively and 0.8 at one year of
follow-up. The mean Quick DASH and Mayo wrist
scores were 4.5 and 90 points respectively. The postoperative
Ballottement test demonstrated stability of
the distal radioulnar joint in all patients. 2 patients
had pain at the level of the anchorage, without ulnar
nerve paresthesia. No patient required additional
surgical intervention.
Conclusions: The repair of acute and subacute
peripheral injuries of triangular fibrocartilage complex
with Mini PushLock, using Nakamura guide and
arthroscopic assistance, is a reliable, minimally invasive,
safe and effective technique, with excellent
clinical and functional outcomes after one year of
follow-up.
A-1183 Unstable PIP Fracture-Dislocations: A
Biomechanical comparison of Volar Plate
Arthroplasty vs Hemi-Hamate Arthroplasty
Felix Riano1 and Fabio Suarez2
1Naples Hand, Naples, Florida, United States
2Hospital Militar Central, Bogota, Colombia
Purpose: Multiple techniques exist as part of the
armamentarium for the management of Proximal
Interphalangeal Joint (PIP) fracture-dislocations. Of
these, unstable lesions with hard reduction are the
most complicated to handle. This study aims to compare
the biomechanical results obtained with Volar
Plate Arthroplasty (VPA) and the Hemi-Hamate
Arthroplasty (HHA).
Materials and Methods: We used thirty fingers from
10 cadaveric hands. We created a 50% defect on the
base of the Middle phalanges to simulate an unstable
fracture-dislocation. The two techniques were
assigned randomly to the different fingers (15 for
each technique). A biomechanical harness was
used to carry all PIP joints from extension to complete
flexion. The amount of dorsal translation of the
subluxation was recorded digitally at full extension.
We recorded the angle at which subluxation occurred
for each specimen.
Results: The average of dorsal displacement of the
middle phalanx did not show statistical significant
difference (0.02mm for the HHA and 0.01mm for
the VPA). All the fingers with VPA coursed with flexion
contracture as opposed to the HHA.
Conclusions: The VPA and the HHA are current techniques
used for the management of unstable PIP
fracture-dislocations. The two procedures manage
to maintain reduction throughout the range of
flexo-extension. Surgeons must choose between a
little more invasive technique because of the
double surgical incision, take of the hamate autograft
block with potential discomfort of the donor area,
and screw fixation on the recipient area of the
middle phalanx not leading to flexion contracture
(HHA) versus a single surgical approach technique
(volar or dorsal), which provides stability but it
courses with certain degrees of flexion contracture.
A-1185 Predictability of Arthroscopic Findings of
the Distal Radius Ulnar Joint in Galeazzi
fracture-dislocation
Caloia Martin, Ronconi Sergio, Caloia Hugo,
Gonza´lez Scotti Diego, Serur Emilia, Otero Macarena,
Chamorro Geronimo, Guevara Gonzalo and
Meritano Alejandro
Orthopeadic Department, Upper Extremity& Hand Surgery
section, Austral UniversityHospital, Pilar, Buenos Aires,
Argentina
Objective: Describe the injuries associated with
Galeazzi fracture-dislocation, determined by wrist
arthroscopy, and define a pattern of predictability
and association among them. Materials and
methods: A retrospective, descriptive and analytical
study was carried out on 19 patients with Galeazzi
fracture-dislocation treated with open reduction
and internal fixation with arthroscopic assistance,
in the period between June 2008 and February
2019. Inclusion criteria: patients with closed
Galeazzi fracture-dislocation, less than 60 years of
age, without previous associated injuries, a minimum
follow-up of 6 months and patients operated by the
same surgical team. Exclusion criteria: open fractures
and patients who did not complete the treatment
or the minimum follow-up. Out of a total
sample of 19 patients, 15 met the inclusion criteria.
Journal of Hand Surgery - June 2022

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