• 한국임상수의학회지
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• 제20권1호
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• pp.96-103
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• 2003

The purpose of this study is to evaluate the results obtained from three surgical techniques (retinacular imbrication, trochleoplasty and tibia tuberosity transposition), which were simultaneously applied for correction of patellar luxation. Eleven, (6 to 108 months) old dogs were presented. The dogs showed, medial patellar luxation (17 stifle joint) and lateral patellar luxation (2 stifle joint) ranging from grade 1 to 4. By palpation and radiographic view, all 11 dogs were diagnosed as patellar luxation. Bilateral patellar luxation was diagnosed in 8 dogs. After operation, the dogs were monitored daily for 7 days and on the 10th, 15th, 20th, 25th and 30th days. Lameness progressively decreased in all dogs around 30 days after surgery, and the patients were showed normal walking. Normal walking was possible in 2 dogs after 4 days, in a dog after 5 days, a dog after 7 days, 3 dogs after 10 days,2 dogs after 15 days, a dog after 25 days and a dog after 30 days (Mean$\pm$S.E: 12.27$\pm$2.57). The recovery took 14 days in dogs with bilateral patellar luxation, and 9 days in dogs with unilateral patellar luxation. Trend of decrease of lameness grade in bilateral patellar corrected dogs were similar to that in unilateral patellar corrected dogs. Swelling, pain and fever disappeared on 7 days. In conclusion, combination of tibial tuberosity transposition, retinacular imbrication and trochleoplasty is appropriate for dogs with patellar luxation.

• 한국임상수의학회지
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• 제16권2호
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• pp.309-320
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• 1999

Medial patellar luxation in dogs is one of the most common patellar problems presented to the veterinary practitioner. It is observed in toy and miniature breed and the majority of cases is a congenital form. Because of extensor mechanism's instability, it causes deformity and disorder in the growth of the affected limb when the luxation is left without treatment As lameness is not easily detectable in puppies, early diagnosis and correction are essential for therapy. Up to now, there has not been any reports refering to the diagnostic methods and the optimal age for correction in young dogs. Thirteen 45-90 days old puppies, have grade I and/or II medial patellar luxation. Only by palpation, all 13 dogs were diagnosed of patelar luxation. Skyline radiographic view was useful to interpret patellar morphology and depth of trochlear groove only above 60 days old. However, it was difficult to make definite diagnosis patellar luxation. The caudocranial and lateral radiographic view as well as ultrasonographic skyline view were not showed of patellar luxation. 2 puppies had unilateral patellar luxation and 11 puppies had bilateral patellar luxation which more serious on the left than on the right. Only 3 puppies among 11 puppies with bilateral patellar luxation were observed of lameness degree 1. Regardless of grade of patellar luxation and lameness, we performed trochlear chondroplasty using a U-shape sculpture blade to minimize cartilage injury, transposition of tibia tuberosity with No. 1 Supramid to align extensor mechanism and lateral imbrication. After surgery, we examined the operated animal daily for 10 days and on 15, 30 and 60 days after surgery respectively. After operation, pain and fever became normal on 7 days, swelling on 10 days, respectively. On 10 days after surgery, dogs showed normal standing position, and normal walking was observed in 15 days after surgery. In force plate analysis, the operated legs were normal weight bearing at 30 days after operation. After surgery, not only patellar luxation and clinical signs have been gradually reduced but also bone growth have become normal without showing growth physeal plate injury. The survival rate of puppies over 62 days old was 100%, while 42-45 days old 37.5%. The above results suggest that optimal age for surgical correction of congenital medial patellar luxation is recommended over 60 days old. In conclusion, combination of trochlear chondroplasty, transposition of tibia tuberosity, and lateral retinacular imbrication is appropriate for over 60 days old puppies to efficiently correct patellar luxation.

• 대한수의사회지
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• 제29권3호
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• pp.131-136
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• 1993

The Tibial crest transposition operate on a 1.5 months old male calf for congenital bilateral patellar luxation. After this operation the luxative patellar was reduction. This case is very rare in large animal sugery but the result of surgery was very eff

• 대한물리치료과학회지
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• 제31권1호
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• pp.46-52
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• 2024

Background: This study aims to investigate compensatory strategy in a dog with glenoid dysplasia using kinetic gait analysis before and after reconstruction of medial patellar luxation. Design: Case report Method: On the platform, gait analysis was evaluated for a dog with congenital luxation and bilateral medial patellar luxation (MPL). A dog was evaluated for maximal vertical force (MVF), body load distribution (BLD), and symmetry index (SI), including the left forelimb with congenital luxation before MPL surgery, 15 days of surgery, and 40 days of surgery. Result:: In the comparison between the preoperative and the 15 days of surgery, the MVF of the bilateral forelimbs, especially in the non-affected forelimbs, increased, and the SI also increased. For BLD, the maximum load distribution increased, but the total load distribution decreased. In the comparison of 15 days and 40 days of surgery, MVF and BLD increased, and SI decreased on 40days of surgery. Conclusions: In a dog, the shift in weight load to the non-affected side occurs all the limbs, affecting the peak vertical force, weight load distribution, and symmetry index.

• 한국임상수의학회지
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• 제31권2호
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• pp.133-136
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• 2014

8 kg, 9개월령 중성화 수컷 시바 이누견이 양측 후지의 간헐적인 파행 증상으로 내원하였다. 검사를 통해 3단계의 양측 슬개골 탈구가 진단되었다. 대퇴 사두근의 정상 배열을 회복하기 위해서 상대적으로 비침습적인 조면의 위치를 재배열하는 독특한 수술 방법을 적용하였다. 이 과정은 경골 능선을 따라 경골 조면의 내측 피질골을 절개하고, 경골 조면을 외측으로 변위시키기 위해 경골 능선의 내측에 피질골 나사못을 장착하는 방식으로 이루어졌다. 수술 후 3개월 검사에서 양측 후지의 파행과 슬개골 탈구가 개선된 것이 확인되었다. 이 수술 기법은 골격이 미성숙한 환자에서 내측 슬개골 탈구를 치료하기 위한 효과적인 방법으로 고려될 수 있다.

• 한국임상수의학회지
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• 제33권6호
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• pp.385-388
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• 2016

A 2-year-old, castrated male Chihuahua dog was referred for revision surgery for reluxation of the patella following surgery for medial patellar luxation (MPL) of the left stifle joint. On general inspection, the patient showed bilateral hindlimb weight-bearing lameness. On physical examination, bilateral non-reducible MPL was detected through palpation. Radiographs revealed bone deformities of both hindlimbs. Computed tomography (CT) was applied for a three-dimensional (3D) printing bone model to establish an accurate surgical plan. The bone plate was pre-contoured over the 3D-printing bone model after execution of corrective osteotomy and sterilized prior to use in surgery. Corrective osteotomy was performed through a staged, bilateral procedure. The patient showed improvement of limb function following surgery without reluxation of the patella. The use of 3D-printing bone model for accurate surgical planning of corrective osteotomy appears to be effective in increasing the accuracy of surgery. That may lead to successful surgical outcomes.

• 한국임상수의학회지
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• 제33권5호
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• pp.295-299
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• 2016

A 2-year-old, 1.94 kg spayed female Toy Poodle was referred for revision surgery for patellar reluxation following surgery for bilateral medial patellar luxation (MPL). Intermittent non-weight-bearing lameness of the right hindlimb and weight-bearing lameness of the left hindlimb were evident on general inspection. A physical examination revealed that there was a bilateral grade 4 MPL. On radiographs, the medial and lateral trochlear ridge was bilaterally worn out. Patellar groove replacement (PGR) was performed in two stages to replace the bilateral femoral trochlea that had a severely worn out groove. Corrective femoral osteotomy with increasing anteversion angle, tibial tuberosity transposition, medial releasing, lateral imbrications and PGR were performed on the right hindlimb. Six months after surgery on the right hindlimb, a PGR prosthesis was positioned medially on the frontal plane and tibial tuberosity transposition and lateral imbrications were performed on the left hindlimb. Two weeks after surgery, reluxation of the patella occurred on the left hindlimb. The tibial tuberosity transposition was performed to realign the patella more laterally than the previous surgery, and a patellar sling was applied. Two years after the last surgery, the patient showed no pain on the stifle joint and satisfactory weight-bearing ambulation. Reluxation did not recur. PGR maybe a successful treatment for dogs with iatrogenically damaged and/or worn out patellar grooves.

• 한국임상수의학회지
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• 제37권3호
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• pp.135-140
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• 2020

The purpose of this study was to determine the outcome of distal femoral osteotomy for distal femoral varus and medial patellar luxation (MPL) grade 4 in small-breed dogs. Radiographs and medical records were reviewed to collect data and plan the surgery in small-breed dogs with MPL grade 4. Computed tomography (CT) imaging was also performed in cases of severe bone deformities. Signalment, weight, medial patellar luxation and lameness grade, radiographic bone union, complications, pre- and postoperative femoral varus angle, passive range of motion, static weight bearing distribution and visual analogue scale scores were recorded. Thirteen corrective distal femoral osteotomies were performed with ancillary and additional procedures in 9 dogs; 4 dogs had staged bilateral procedures; and four stifles were suspected to have partial or complete rupture of the cranial cruciate ligament. One stifle underwent patellar groove replacement. The mean ± SD pre- and postoperative femoral varus angles were 109.15°± 3.71° and 96.30°± 2.97°, respectively. Significant improvements in passive range of motion, thigh circumference and visual analogue scale (VAS) scores were observed. There was no reluxation of the patella. This study suggests that distal femoral osteotomy with traditional and additional procedures provided satisfactory outcomes in patient healing and functional recovery in small-breed dogs with excessive femoral varus angles.

• 한국임상수의학회지
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• 제32권1호
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• pp.98-100
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• 2015

10살령의 2 kg의 암컷 치와와가 다리를 딛지 못하는 전지파행으로 내원하였다. 촉진시 대결절은 정상 위치 보다 내측에서 촉진되었고 염발음이 간헐적으로 들렸다. 방사선학적 검사에서 좌측 내측 견갑상완 관절 탈구로 진단되었다. 또한, 양측성으로 3기의 내측 슬개골 탈구도 관찰되었다. 외과적으로, 내측 견관절 탈구를 상완이두건 전위술로 정복하였다. 환견은 수술 6주째 정상 보행이었고 다리를 딛게 되었다.

• 한국임상수의학회지
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• 제32권3호
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• pp.251-254
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• 2015

3살 중성화된 수컷 스피츠 (8.4 kg)가 후지 파행으로 본원에 의뢰되었다. 환자는 6주전 양측 내측 슬개골 탈구 교정술을 받았다. 육안상 양측 뒷다리의 간헐적인 파행을 보였으며 신체검사에서 슬관절의 굴신전시 염발음을 동반한 중등도의 통증을 보였다. 방사선 검사상 양측 슬관절에서 연골편의 원위부 이탈과 함께 관절부종이 관찰되었다. 신체검사와 방사선검사를 토대로 양측 슬관절 골연골편의 분리와 이탈이 의심되었다. 관절경을 통해 이탈한 골연골편(우측 $1.5cm{\times}0.9cm{\times}0.2cm$, 좌측 $1.3cm{\times}0.9cm{\times}0.1cm$)을 확인하고 제거하였다. 골연골편을 제거한 후, 슬개골의 비정상적 움직임을 예방하기 위해 관절경을 통해 burr를 이용하여 층진 활차구를 성형해주었다. 환자는 수술 2주후 정상적인 보행을 하였으며 합병증을 보이지 않았다. 관절경은 개의 관절질환 진단 및 치료를 위한 효과적인 수단이다. 이를 통해 관절내 구조물을 확대해서 관찰 할 수 있고 정확한 진단을 할 수 있다. 게다가 관절경을 통한 수술은 일반적인 술부에서 나타날 수 있는 술 후 합병증을 줄여 줄 수 있다.