Yuzou Fukahori

Uji Hospital

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Follow-up study of primary repair for the acutely torn anterior cruciate ligament.

Orthopedics & Traumatology (1989)

Tetsuji Koga Masaya Asano Yutaka Adachi Makoto Arinaga Osamu Soejima

Fifteen patients who underwent primary repair of the acutely torn anterior cruciate ligament (ACL) were followed and short-term results were estimated. The subjects were 12 men and 3 women. Combined ligamentous injuries consisted of medial collateral ligament tear in 4 knees, posterior cruciate ligament tear and others tear in 5 kness. Follow-up term ranged from 12 to 40 months, with the average of 20.9 months. All patients were evaluated subjectively and objectively by Kobayashi scoring system. Most of the patients with an isolated ACL tear had good results. However, it was difficult to have good results in both ROM and stability.

Medial collateral ligament

10.5035/nishiseisai.38.676

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Seven Cases of Trochanteric Osteotomy with Anterior Trrochanteric Slide.

Orthopedics & Traumatology (1997)

Hisanao Tahara Masatoshi Naito Tetsuhiko Arita Kosuke Ogata Yuzou Fukahori

We performed trochanteric osteotmy with anterior transtrochanteric slide in seven cases; four cases of revision arthroplasty, two cases of Sugioka's transtrochanteric rotational osteotmy and one case of Sugioka's transtrochanteric valgus osteotmy. Alth ough one case showed nonunion after operation, none of the cases demonstrated proximal migration of the trochanteric fragment.This osteotomy method is performed without release of the attachment of the vastus lateralis; therefore, compared with standard osteotmy, it decreases the incidence of proximal migration of the trochanteric fragment which causes abductor muscle weakness.

10.5035/nishiseisai.46.1208

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Anatomic considerations of the peroneal nerve for division of the fibula during high tibial osteotomy.

PubMed (1994)

Osamu Soejima K Ogata Takashi Ishinishi Yuzou Fukahori R Miyauchi

Twenty legs in 10 cadavers were dissected to determine the course of the deep peroneal nerve from its origin to its termination. Particular attention was paid to defining: (1) its relationship to palpable landmarks, (2) the angle of the course of its proximal portion against the long axis of the fibula, (3) distribution of the proximal branch to the extensor hallucis longus muscle, and (4) safe areas of osteotomy in the proximal fibula during high tibial osteotomy. The extensor hallucis longus was often supplied by only one branch from the deep peroneal nerve at 99.8 mm (31.7%) distally from the apex of the fibula; this seems to explain why osteotomy of the fibula at its proximal one third often causes paralysis of this muscle. The findings suggest that safe areas for osteotomy in the proximal fibula during high tibial osteotomy are located up to 20.5 mm (6.5%) distal to the tip of the fibular head and that the safe angle of a periosteal incision against the fibular neck area is 64.1 degrees.

Superficial peroneal nerve

High tibial osteotomy

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Measurements of Length Patterns of the Posterior Cruciate Ligament with Magnetic Resonance Imaging.

Orthopedics & Traumatology (1993)

T. Ishida Yuzou Fukahori Kosuke Ogata Keihan Choh Hiroshi Nomiyama

Length patterns of the posterior cruciate ligament (PCL) were measured with magnetic resonance imaging of five normal human knees. All were male right knees. The average age was 25.6 years. The sagittal view showed the PCL clearly as a low signal intensity in T1 weighted imaging. We evaluated the changes in length during knee flexion from 0 to 120 degree (0, 30, 60, 90, 120 degrees). The maximum length of the PCL was at the 60 degree flexion and its minimun length at 0 and 120 degrees. This suggested that 0 degree flexion of the knee joint avoided the hyper tensile stress of the PCL and that it was a suitable position for the treatments of PCL injuries.

Posterior cruciate ligament

Knee flexion

10.5035/nishiseisai.42.1375

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Maffucci's Syndrome. A Case Report.

Orthopedics & Traumatology (1998)

T. Ishida Sansen Yoh Yuzou Fukahori Nobuhiro Ikari

Maffucci's syndrome is a congenital, non-hereditary mesodermal dysplasia manifested by multiple enchondromas and hemangiomas. It is associated with diverse secondary musculoskeletal deformities. A high proportion of the enchondromas undergo malignant degeneration.We report one case of Maffucci's syndrome in a 17-year-old girl.

Girl

Enchondroma

Degeneration (medical)

10.5035/nishiseisai.47.469

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Experience of High Tibial Osteotomy with Watanabe's Guide.

Orthopedics & Traumatology (1991)

Nobuo Sai Tetsuji Koga Yuzou Fukahori N. Takagishi Michiya Hara

Twelve knees in eleven patients with osteoarthritis were treated by high tibial osteotomy using Watanabe's Guide. We could get smooth curved surface in osteotomy and good correction. We introduced Watanabe's Guide.

High tibial osteotomy

10.5035/nishiseisai.39.978

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Revision for Reconstruction of Anterior Cruciate Ligament with Synthetic Ligament.

Orthopedics & Traumatology (1995)

Masatoshi Yamada Kousuke Ogata Michiya Hara Masakatsu Yasunaga Yuzou Fukahori

We performed 3 revision cases following reconstruction of the anterior cruciate ligament with a Dacron prosthesis. One patient had only used a dacron prosthesis, while the other cases used both a dacron prosthesis and iliotibial band. All cases required revision due to reinfury whici occurred over a months after surgery. Revisions were very difficult a little and post-operatively one has instability and the other two have good stability and enjoy sports. We consider anterior cruciate ligament reconstruction using one-third of patellar ingament a very useful procedure.

10.5035/nishiseisai.44.956

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Factors Influencing Lateral Thrust of the Normal and Osteoarthritic Knee.

Orthopedics & Traumatology (1993)

Masakatsu Yasunaga Kousuke Ogata Hiroshi Nomiyama Hiroyuki Iida Yuzou Fukahori

Data using an accelerometer to measure lateral knee thrust was evaluated in 30 osteoarthritic knees (12 men, 18 women, mean age 62 years [55-72]) and 30 normal knees (18 men, 12 women, mean age 28 years [22-38]) under the following conditions. [(1) flat ground gait, (2) 30° up slope gait, (3) 30° down slope gait, (4) stairs climbing, (5) stairs descending, (6) flat ground gait with 20 kg load.]Compared with the value for flat ground gait, the peak value of acceleration after heel strike showed a significant increase with a 30° down slope, stairs descending, flat ground gait with 20kg load, all of which were considered factors which exacerbated osteoarthritic knees.

Stairs

Ground reaction force

Climbing

Stair climbing

10.5035/nishiseisai.42.646

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Tibial Fractures Treated with AO Unreamed Nail.

Orthopedics & Traumatology (1996)

T. Ishida Yuzou Fukahori Hisanao Tahara

We reviewed 10 patients with tibial fractures treated with an AO unreamed nail during the period April 1994 to August 1995. The average follow-up was 10.7 months (range; 4-18 months). There were 6 closed and 4 open fractures.The average time for the procedure was 56 minutes (range; 37-75 minutes). Full weight-bearing patients started in all patients, 4-6 weeks after the operation. Union of the tibial fracture occurred within 24 weeks in 9 patients except that one had a delayed union. All patients had good leg function. A deep infection occurred in one case. one proximal screw and two distal screws were broken.

Tibial fracture

Closed Fracture

Delayed union

Weight-bearing

10.5035/nishiseisai.45.1017

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