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Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_4 | Pages 12 - 12
1 Jan 2016
Song IS Shin SY
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Purpose

We may consider total knee arthroplasty on one knee and unicompartmental knee arthroplasty on another knee when the patient has different grade osteoarthritis on one knee and opposite knee. Both total knee and unicompartmental knee arthroplasty had been reported as excellent clinical results, but there can be different results and different preference if the same patient undergo operation of simulataneous total knee and unicompartmental knee. We performed total and unicompartmental knee arthroplasty and pretend to report results of the clinical and radiological results and rationale of the operation.

Materials and Methods

From Marth 2007 to February 2014, 23 patients, 46 knees that underwent total knee arthroplasty and unicompartmental knee arthroplasty on knees with different osteoarthritis grade in same person enrolled in this study(Fig. 1). The mean age was 64.4 years old(range:55–75) and mean follow-up period was 25.1 months(range:13–72).


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_4 | Pages 11 - 11
1 Jan 2016
Song IS Shin SY
Full Access

Purpose

To evaluate the results of reverse total shoulder arthroplasty for complicated proximal humerus fractures in old ages.

Materials and Methods

We retrospectively evaluated 13 cases who underwent reverse total shoulder arthroplasty for proximal humerus fracture, fracture-dislocation and nonunions of the fractures. Mean age was 77(68–87)years old and mean follow-up period was 15.2(12–26)months. four part fractures of proximal humerus in 7 cases, fracture-dislocation in 3 cases, locked dislocation with greater tuberosity in 2 cases, nonunion with defiency of rotator cuff in 1 case were included. We evaluated mean ASES, mean UCLA, mean KSS, mean SST and mean range of motion(ROM).


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_4 | Pages 10 - 10
1 Jan 2016
Song IS Shin SY
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Background

The aim of this study was to evaluate causes and results of revision surgery in unstable total knee arthroplasties.

Methods

We retrospectively reviewed 24 knees that underwent a revision arthroplasty for unstable total knee arthroplasty. The average follow-up period was 33.8 months. We classified the instability and analyzed the treatment according to its cases. Stress radiographs, postoperative component position and joint level were measured. Clinical outcomes were assessed using the score and range of motion of the Hospital for Special Surgery (HSS).


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_4 | Pages 13 - 13
1 Jan 2016
Song IS Shin SY
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Purpose

The purpose of this study is toevaluate the clinical and radiologic results after high flexiontotal knee arthroplasty, Lospa®(Corentec Inc.) with 10mm cutting of posterior femoral condyle and LPS-Flex®(Zimmer Inc.) with 12.5mm cutting of posterior femoral condyle.(Fig. 1)

Materials and Methods

We prospectively compared 205 knees in 128 patients who underwent arthroplasty usingLospa®(groupA) and 63 knees in 48 patients who underwentarthroplasty using NexGen LPS-Flex®(group B) from September 2010 to March 2012 at Department of Orthopaedic Surgery, Sun General Hospital (Daejeon, Korea). Mean follow-up period was 33 months(24–42) in group A and 33months(23–45) in group B, and mean age was 69.5 in group A, 70.4 in group B. The radiologic analysis included the change of mechanical axis deviation and femoro-tibial angle, implant position (α,β,γ,δ)(Fig 2). The clinical results were evaluated according to Hospital for special surgery (HSS), Knee society score (KSS), and range of motion.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_34 | Pages 537 - 537
1 Dec 2013
Song IS
Full Access

Purpose:

To evaluate the results of reverse total shoulder arthroplasty for complicated proximal humerus fractures in old ages.

Materials and Methods:

We retrospectively evaluated 13 cases who underwent reverse total shoulder arthroplasty for proximal humerus fracture, fracture-dislocation and nonunions of the fractures. Mean age was 77 years old and mean follow-up period was 15.2(12–26) months. four part fractures of proximal humerus in 7 cases, fracture-dislocation in 3 cases, locked dislocation with greater tuberosity in 2 cases, nonunion with defiency of rotator cuff in 1 case were included (Fig. 1, Fig. 2, Fig. 3). We evaluated mean ASES, mean UCLA, mean KSS, mean SST and mean range of motion (ROM).


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_34 | Pages 373 - 373
1 Dec 2013
Song IS Kim TI
Full Access

Background:

To evaluate causes and results of revision arthroplasties in unstable total knee arthroplasties

Methods:

We retrospectively reviewed 24 knees that underwent revision arthroplasty for unstable total knee arthroplasty from December 2004 to December 2010. The mean age was 71.0(range, 54–85) years and the average follow-up period was 33.8 months (range, 6–70). The mean interval between the primary TKA and revision TKA was 82.5 months (range, 14–228). We classified the instability and analyzed the treatment according to its cases. Stress radiographs, postoperative component position and joint level were measured. Joint line position was measured using the fibular head as the reference point. Clinical outcomes were assessed using the Hospital for Special Surgery (HSS) score and range of motion. Wilcoxon sign rank test was employed for statistical analysis, and when p-value was over 0.05, it was analyzed as having statistical significances.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_34 | Pages 374 - 374
1 Dec 2013
Song IS Kim TI
Full Access

Purpose:

We compared patients, (group A) who had severe varus deformity with posterolateral varus thrust, with patients,(group B) who didn't have varus thrust for results of total knee arthroplasty.

Materials and Methods:

The average follow-up period was 33 months in group A (25 cases out of 23 patients) and 67 months in group B (50 cases out of 50 patients). We evaluated which kind of implant the patient had, the thickness of the polyethylene and changes of joint levels. Also we measured preoperative and postoperative mechanical axis deviation, tibio-femoral angle, and implant positions. Clinical results included preoperative and postoperative HSS, KSS, range of motion, and remained posterolateral instability on final follow-ups (Fig 1, Fig 2).