OFA Patella Certificates for our Biewer Terriers

All our adults are certified health tested. The table below provides you with all tests performed for our dogs, including the results. You will find a more detailed database on the website of the Orthopedic Foundation for Animals.

AKCNameBreedSexTestOFAResults
TS29055401ROCKY MOUNTAIN MS MIRACLEBIEWER TERRIERFDEGENERATIVE MYELOPATHYBYT-DM1/46F-PICLEAR/NORMAL
TS29055401ROCKY MOUNTAIN MS MIRACLEBIEWER TERRIERFHYPERURICOSURIABYT-HU1/46F-PICLEAR/NORMAL
TS29055401ROCKY MOUNTAIN MS MIRACLEBIEWER TERRIERFPATELLABYT-PA209/66F/P-VPINORMAL
TS29055401ROCKY MOUNTAIN MS MIRACLEBIEWER TERRIERFPRIMARY LENS LUXATIONBYT-PLL1/46F-PICLEAR/NORMAL
TS29055401ROCKY MOUNTAIN MS MIRACLEBIEWER TERRIERFPROGRESSIVE RETINAL ATROPHYBYT-PRA1/46F-PICLEAR/NORMAL
TS50137401ROCKY MOUNTAIN'S HERE AT OSTARABIEWER TERRIERMPROGRESSIVE RETINAL ATROPHYBYT-PRA73/4M-PICLEAR/NORMAL
TS50137401ROCKY MOUNTAIN'S HERE AT OSTARABIEWER TERRIERMPRIMARY LENS LUXATIONBYT-PLL72/4M-PICLEAR/NORMAL
TS50137401ROCKY MOUNTAIN'S HERE AT OSTARABIEWER TERRIERMEYESBYT-EYE146/14M-VPINORMAL
TS50137401ROCKY MOUNTAIN'S HERE AT OSTARABIEWER TERRIERMHYPERURICOSURIABYT-HU58/4M-PICLEAR/NORMAL
TS50137401ROCKY MOUNTAIN'S HERE AT OSTARABIEWER TERRIERMCANINE HEALTH170800CHIC
TS50137401ROCKY MOUNTAIN'S HERE AT OSTARABIEWER TERRIERMDEGENERATIVE MYELOPATHYBYT-DM67/4M-PICLEAR/NORMAL
TS53702801ROCKY MOUNTAIN'S JUST FOLLOW MEBIEWER TERRIERMDEGENERATIVE MYELOPATHYBYT-DM90/5M-PICLEAR/NORMAL
TS53702801ROCKY MOUNTAIN'S JUST FOLLOW MEBIEWER TERRIERMHYPERURICOSURIABYT-HU72/5M-PICLEAR/NORMAL
TS53702801ROCKY MOUNTAIN'S JUST FOLLOW MEBIEWER TERRIERMPRIMARY LENS LUXATIONBYT-PLL114/5M-PICLEAR/NORMAL
TS53702801ROCKY MOUNTAIN'S JUST FOLLOW MEBIEWER TERRIERMPROGRESSIVE RETINAL ATROPHYBYT-PRA114/5M-PICLEAR/NORMAL
TS40345102ROCKY MOUNTAIN'S LADY ALICEBIEWER TERRIERFPATELLABYT-PA248/26F/P-VPINORMAL
TS40726802ROCKY MOUNTAIN'S LADY ALMABIEWER TERRIERFPATELLABYT-PA238/30F/P-VPINORMAL
TS51291401ROCKY MOUNTAIN'S LADY AVABIEWER TERRIERFPROGRESSIVE RETINAL ATROPHYBYT-PRA115/9F-PICLEAR/NORMAL
TS51291401ROCKY MOUNTAIN'S LADY AVABIEWER TERRIERFPRIMARY LENS LUXATIONBYT-PLL115/9F-PICLEAR/NORMAL
TS51291401ROCKY MOUNTAIN'S LADY AVABIEWER TERRIERFHYPERURICOSURIABYT-HU73/9F-PICLEAR/NORMAL
TS51291401ROCKY MOUNTAIN'S LADY AVABIEWER TERRIERFDEGENERATIVE MYELOPATHYBYT-DM91/9F-PICLEAR/NORMAL
TS43999705ROCKY MOUNTAIN'S LADY BAMBIBIEWER TERRIERFDEGENERATIVE MYELOPATHYBYT-DM88/9F-PICLEAR/NORMAL
TS43999705ROCKY MOUNTAIN'S LADY BAMBIBIEWER TERRIERFHYPERURICOSURIABYT-HU70/9F-PICLEAR/NORMAL
TS43999705ROCKY MOUNTAIN'S LADY BAMBIBIEWER TERRIERFPROGRESSIVE RETINAL ATROPHYBYT-PRA112/9F-PICLEAR/NORMAL
TS43999705ROCKY MOUNTAIN'S LADY BAMBIBIEWER TERRIERFPATELLABYT-PA232/12F/P-VPINORMAL
TS43999705ROCKY MOUNTAIN'S LADY BAMBIBIEWER TERRIERFPRIMARY LENS LUXATIONBYT-PLL112/9F-PICLEAR/NORMAL
TS43999701ROCKY MOUNTAIN'S LADY BELLABIEWER TERRIERFPRIMARY LENS LUXATIONBYT-PLL111/9F-PICLEAR/NORMAL
TS43999701ROCKY MOUNTAIN'S LADY BELLABIEWER TERRIERFPATELLABYT-PA227/12F/P-VPINORMAL
TS43999701ROCKY MOUNTAIN'S LADY BELLABIEWER TERRIERFHYPERURICOSURIABYT-HU69/9F-PICLEAR/NORMAL
TS43999701ROCKY MOUNTAIN'S LADY BELLABIEWER TERRIERFDEGENERATIVE MYELOPATHYBYT-DM87/9F-PICLEAR/NORMAL
TS43999701ROCKY MOUNTAIN'S LADY BELLABIEWER TERRIERFPROGRESSIVE RETINAL ATROPHYBYT-PRA111/9F-PICLEAR/NORMAL
TS33680402ROCKY MOUNTAIN'S LADY CHELSEABIEWER TERRIERFPATELLABYT-PA225/44F/P-VPINORMAL
TS33680401ROCKY MOUNTAIN'S LADY CHLOEBIEWER TERRIERFPATELLABYT-PA231/44F/P-VPINORMAL
TS42889903ROCKY MOUNTAIN'S LADY COLLETTEBIEWER TERRIERFPATELLABYT-PA251/17F/P-VPINORMAL
TS40727106ROCKY MOUNTAIN'S LADY DAISYBIEWER TERRIERFPATELLABYT-PA230/28F/P-VPINORMAL
TS50137501ROCKY MOUNTAIN'S LADY ELSABIEWER TERRIERFPROGRESSIVE RETINAL ATROPHYBYT-PRA119/5F-PICLEAR/NORMAL
TS50137501ROCKY MOUNTAIN'S LADY ELSABIEWER TERRIERFPRIMARY LENS LUXATIONBYT-PLL119/5F-PICLEAR/NORMAL
TS50137501ROCKY MOUNTAIN'S LADY ELSABIEWER TERRIERFHYPERURICOSURIABYT-HU77/5F-PICLEAR/NORMAL
TS50137501ROCKY MOUNTAIN'S LADY ELSABIEWER TERRIERFDEGENERATIVE MYELOPATHYBYT-DM95/5F-PICLEAR/NORMAL
TS47575605ROCKY MOUNTAIN'S LADY GINABIEWER TERRIERFDEGENERATIVE MYELOPATHYBYT-DM89/14F-PICLEAR/NORMAL
TS47575605ROCKY MOUNTAIN'S LADY GINABIEWER TERRIERFHYPERURICOSURIABYT-HU71/14F-PICLEAR/NORMAL
TS47575605ROCKY MOUNTAIN'S LADY GINABIEWER TERRIERFPRIMARY LENS LUXATIONBYT-PLL113/14F-PICLEAR/NORMAL
TS47575605ROCKY MOUNTAIN'S LADY GINABIEWER TERRIERFPROGRESSIVE RETINAL ATROPHYBYT-PRA113/14F-PICLEAR/NORMAL
TS40726801ROCKY MOUNTAIN'S LADY GLITZ AND GLAMOURBIEWER TERRIERFEYESBYT-EYE34/16F-VPINORMAL
TS47575604ROCKY MOUNTAIN'S LADY GRETABIEWER TERRIERFDEGENERATIVE MYELOPATHYBYT-DM86/14F-PICLEAR/NORMAL
TS47575604ROCKY MOUNTAIN'S LADY GRETABIEWER TERRIERFHYPERURICOSURIABYT-HU68/14F-PICLEAR/NORMAL
TS47575604ROCKY MOUNTAIN'S LADY GRETABIEWER TERRIERFPRIMARY LENS LUXATIONBYT-PLL110/14F-PICLEAR/NORMAL
TS47575604ROCKY MOUNTAIN'S LADY GRETABIEWER TERRIERFPROGRESSIVE RETINAL ATROPHYBYT-PRA110/14F-PICLEAR/NORMAL
TS50137403ROCKY MOUNTAIN'S LADY HARPERBIEWER TERRIERFPROGRESSIVE RETINAL ATROPHYBYT-PRA118/4F-PICLEAR/NORMAL
TS50137403ROCKY MOUNTAIN'S LADY HARPERBIEWER TERRIERFPRIMARY LENS LUXATIONBYT-PLL118/4F-PICLEAR/NORMAL
TS50137403ROCKY MOUNTAIN'S LADY HARPERBIEWER TERRIERFHYPERURICOSURIABYT-HU76/4F-PICLEAR/NORMAL
TS50137403ROCKY MOUNTAIN'S LADY HARPERBIEWER TERRIERFDEGENERATIVE MYELOPATHYBYT-DM94/4F-PICLEAR/NORMAL
TS40888701ROCKY MOUNTAIN'S LADY KERRYBIEWER TERRIERFPATELLABYT-PA224/23F/P-VPINORMAL
TS42686901ROCKY MOUNTAIN'S LADY KIARABIEWER TERRIERFPATELLABYT-PA257/29F/P-VPINORMAL
TS43534601ROCKY MOUNTAIN'S LADY LACEYBIEWER TERRIERFPATELLABYT-PA239/22F/P-VPINORMAL
TS42687002ROCKY MOUNTAIN'S LADY LAURABIEWER TERRIERFPATELLABYT-PA262/31F/P-VPINORMAL
TS52023101ROCKY MOUNTAIN'S LADY LULUBIEWER TERRIERFPRIMARY LENS LUXATIONBYT-PLL117/10F-PICLEAR/NORMAL
TS52023101ROCKY MOUNTAIN'S LADY LULUBIEWER TERRIERFPROGRESSIVE RETINAL ATROPHYBYT-PRA117/10F-PICLEAR/NORMAL
TS52023101ROCKY MOUNTAIN'S LADY LULUBIEWER TERRIERFHYPERURICOSURIABYT-HU75/10F-PICLEAR/NORMAL
TS52023101ROCKY MOUNTAIN'S LADY LULUBIEWER TERRIERFDEGENERATIVE MYELOPATHYBYT-DM93/10F-PICLEAR/NORMAL
TS42687001ROCKY MOUNTAIN'S LADY OLIVIABIEWER TERRIERFPATELLABYT-PA237/31F/P-VPINORMAL
TS40727103ROCKY MOUNTAIN'S LADY RUBYBIEWER TERRIERFPATELLABYT-PA254/28F/P-VPINORMAL
TS42686902ROCKY MOUNTAIN'S LADY SOFIABIEWER TERRIERFPATELLABYT-PA263/29F/P-VPINORMAL
TS44680502ROCKY MOUNTAIN'S LADY TESSABIEWER TERRIERFPATELLABYT-PA259/13F/P-VPINORMAL
TS41538601ROCKY MOUNTAIN'S LADY TINKABIEWER TERRIERFEYESBYT-EYE32/5F-VPINORMAL
TS41538601ROCKY MOUNTAIN'S LADY TINKABIEWER TERRIERFPATELLABYT-PA218/21F/P-VPINORMAL
TS41643704ROCKY MOUNTAIN'S LADY TRINITYBIEWER TERRIERFPATELLABYT-PA250/20F/P-VPINORMAL
TS43443003ROCKY MOUNTAIN'S LADY ZELDABIEWER TERRIERFEYESBYT-EYE35/4F-VPINORMAL
TS35102401ROCKY MOUNTAIN'S MISS BROOKEBIEWER TERRIERFEYESBYT-EYE5/14F-VPINORMAL
TS35488501ROCKY MOUNTAIN'S MISS EMMABIEWER TERRIERFDEGENERATIVE MYELOPATHYBYT-DM12/19F-PICLEAR/NORMAL
TS35488501ROCKY MOUNTAIN'S MISS EMMABIEWER TERRIERFHYPERURICOSURIABYT-HU12/19F-PICLEAR/NORMAL
TS35488501ROCKY MOUNTAIN'S MISS EMMABIEWER TERRIERFPATELLABYT-PA213/38F/P-VPINORMAL
TS35488501ROCKY MOUNTAIN'S MISS EMMABIEWER TERRIERFPROGRESSIVE RETINAL ATROPHYBYT-PRA12/19F-PICLEAR/NORMAL
TS35488501ROCKY MOUNTAIN'S MISS EMMABIEWER TERRIERFPRIMARY LENS LUXATIONBYT-PLL12/19F-PICLEAR/NORMAL
TS29691701ROCKY MOUNTAIN'S MISS EMMYBIEWER TERRIERFPATELLABYT-PA245/55F/P-VPINORMAL
TS29691702ROCKY MOUNTAIN'S MISS FLORENTINEBIEWER TERRIERFPATELLABYT-PA246/55F/P-VPINORMAL
TS41538603ROCKY MOUNTAIN'S MISS LACEYBIEWER TERRIERFPATELLABYT-PA261/55F/P-VPINORMAL
TS33928103ROCKY MOUNTAIN'S MISS LEYLABIEWER TERRIERFPATELLABYT-PA226/43F/P-VPINORMAL
TS32139302ROCKY MOUNTAIN'S MISS MELODYBIEWER TERRIERFPATELLABYT-PA258/48F/P-VPINORMAL
TS29691704ROCKY MOUNTAIN'S MISS MIRANDABIEWER TERRIERFPATELLABYT-PA253/55F/P-VPINORMAL
TS32399001ROCKY MOUNTAIN'S MISS ODESSABIEWER TERRIERFPROGRESSIVE RETINAL ATROPHYBYT-PRA26/46F-PICLEAR/NORMAL
TS32399001ROCKY MOUNTAIN'S MISS ODESSABIEWER TERRIERFPRIMARY LENS LUXATIONBYT-PLL26/46F-PICLEAR/NORMAL
TS32399001ROCKY MOUNTAIN'S MISS ODESSABIEWER TERRIERFEYESBYT-EYE62/45F-VPINORMAL
TS32399001ROCKY MOUNTAIN'S MISS ODESSABIEWER TERRIERFDEGENERATIVE MYELOPATHYBYT-DM25/46F-PICLEAR/NORMAL
TS32399001ROCKY MOUNTAIN'S MISS ODESSABIEWER TERRIERFCANINE HEALTH152393CHIC
TS32404902ROCKY MOUNTAIN'S MISS PAIGEBIEWER TERRIERFPATELLABYT-PA221/47F/P-VPINORMAL
TS32400504ROCKY MOUNTAIN'S MISS RACHELBIEWER TERRIERFPATELLABYT-PA222/47F/P-VPINORMAL
TS32400503ROCKY MOUNTAIN'S MISS RAVENBIEWER TERRIERFPATELLABYT-PA255/47F/P-VPINORMAL
TS32398501ROCKY MOUNTAIN'S MISS SAVANNABIEWER TERRIERFPATELLABYT-PA260/47F/P-VPINORMAL
TS32398704ROCKY MOUNTAIN'S MISS UNITYBIEWER TERRIERFPROGRESSIVE RETINAL ATROPHYBYT-PRA10/27F-PICLEAR/NORMAL
TS32398704ROCKY MOUNTAIN'S MISS UNITYBIEWER TERRIERFPRIMARY LENS LUXATIONBYT-PLL10/27F-PICLEAR/NORMAL
TS32398704ROCKY MOUNTAIN'S MISS UNITYBIEWER TERRIERFHYPERURICOSURIABYT-HU10/27F-PICLEAR/NORMAL
TS32398704ROCKY MOUNTAIN'S MISS UNITYBIEWER TERRIERFPATELLABYT-PA211/47F/P-VPINORMAL
TS32398704ROCKY MOUNTAIN'S MISS UNITYBIEWER TERRIERFDEGENERATIVE MYELOPATHYBYT-DM10/27F-PICLEAR/NORMAL
TS35102701ROCKY MOUNTAIN'S MISS VENICEBIEWER TERRIERFPATELLABYT-PA240/41F/P-VPINORMAL
TS35102702ROCKY MOUNTAIN'S MISS VIENNABIEWER TERRIERFPATELLABYT-PA162/15F/P-VPINORMAL
TS35102702ROCKY MOUNTAIN'S MISS VIENNABIEWER TERRIERFCONGENITAL CARDIACBYT-CA8/21F/C-VPINORMAL
TS35102702ROCKY MOUNTAIN'S MISS VIENNABIEWER TERRIERFCANINE HEALTH135127CHIC
TS35102702ROCKY MOUNTAIN'S MISS VIENNABIEWER TERRIERFEYESBYT-EYE6/14F-VPINORMAL
TS32398401ROCKY MOUNTAIN'S MISS WINNIEBIEWER TERRIERFPATELLABYT-PA228/47F/P-VPINORMAL
TS29793601ROCKY MOUNTAIN'S MS AURORABIEWER TERRIERFPRIMARY LENS LUXATIONBYT-PLL11/34F-PICLEAR/NORMAL
TS29793601ROCKY MOUNTAIN'S MS AURORABIEWER TERRIERFPROGRESSIVE RETINAL ATROPHYBYT-PRA11/34F-PICLEAR/NORMAL
TS29793601ROCKY MOUNTAIN'S MS AURORABIEWER TERRIERFPATELLABYT-PA212/54F/P-VPINORMAL
TS29793601ROCKY MOUNTAIN'S MS AURORABIEWER TERRIERFHYPERURICOSURIABYT-HU11/34F-PICLEAR/NORMAL
TS29793601ROCKY MOUNTAIN'S MS AURORABIEWER TERRIERFDEGENERATIVE MYELOPATHYBYT-DM11/34F-PICLEAR/NORMAL
TS29881802ROCKY MOUNTAIN'S MS BERLINBIEWER TERRIERFPATELLABYT-PA233/54F/P-VPINORMAL
TS31577502ROCKY MOUNTAIN'S MS GEMMABIEWER TERRIERFPATELLABYT-PA223/50F/P-VPINORMAL
TS31577301ROCKY MOUNTAIN'S MS HANNABIEWER TERRIERFPATELLABYT-PA220/50F/P-VPINORMAL
TS31577302ROCKY MOUNTAIN'S MS HOLLIEBIEWER TERRIERFPATELLABYT-PA235/50F/P-VPINORMAL
TS29563201ROCKY MOUNTAIN'S MS KRASOTKABIEWER TERRIERFPRIMARY LENS LUXATIONBYT-PLL9/59F-PICLEAR/NORMAL
TS29563201ROCKY MOUNTAIN'S MS KRASOTKABIEWER TERRIERFPROGRESSIVE RETINAL ATROPHYBYT-PRA9/59F-PICLEAR/NORMAL
TS29563201ROCKY MOUNTAIN'S MS KRASOTKABIEWER TERRIERFHYPERURICOSURIABYT-HU9/59F-PICLEAR/NORMAL
TS29563201ROCKY MOUNTAIN'S MS KRASOTKABIEWER TERRIERFDEGENERATIVE MYELOPATHYBYT-DM9/59F-PICLEAR/NORMAL
TS29563001ROCKY MOUNTAIN'S MS NANCYBIEWER TERRIERFPATELLABYT-PA256/62F/P-VPINORMAL
TS29945901ROCKY MOUNTAIN'S MS TONIBIEWER TERRIERFPATELLABYT-PA210/61F/P-VPINORMAL
TS29945901ROCKY MOUNTAIN'S MS TONIBIEWER TERRIERFPROGRESSIVE RETINAL ATROPHYBYT-PRA6/41F-PICLEAR/NORMAL
TS29945901ROCKY MOUNTAIN'S MS TONIBIEWER TERRIERFPRIMARY LENS LUXATIONBYT-PLL6/41F-PICLEAR/NORMAL
TS29945901ROCKY MOUNTAIN'S MS TONIBIEWER TERRIERFDEGENERATIVE MYELOPATHYBYT-DM6/41F-PICLEAR/NORMAL
TS29945901ROCKY MOUNTAIN'S MS TONIBIEWER TERRIERFHYPERURICOSURIABYT-HU6/41F-PICLEAR/NORMAL
TS43999703ROCKY MOUNTAIN'S SIR BENTLEYBIEWER TERRIERMHYPERURICOSURIABYT-HU21/10M-PICLEAR/NORMAL
TS43999703ROCKY MOUNTAIN'S SIR BENTLEYBIEWER TERRIERMDEGENERATIVE MYELOPATHYBYT-DM26/10M-PI-CARCARRIER
TS43999703ROCKY MOUNTAIN'S SIR BENTLEYBIEWER TERRIERMEYESBYT-EYE67/12M-PINORMAL
TS43999703ROCKY MOUNTAIN'S SIR BENTLEYBIEWER TERRIERMCANINE HEALTH153885CHIC
TS43999703ROCKY MOUNTAIN'S SIR BENTLEYBIEWER TERRIERMPRIMARY LENS LUXATIONBYT-PLL27/10M-PICLEAR/NORMAL
TS43999703ROCKY MOUNTAIN'S SIR BENTLEYBIEWER TERRIERMPROGRESSIVE RETINAL ATROPHYBYT-PRA27/10M-PICLEAR/NORMAL
TS29560801ROCKY MOUNTAIN'S SIR BOBBYBIEWER TERRIERMPRIMARY LENS LUXATIONBYT-PLL4/42M-PICLEAR/NORMAL
TS29560801ROCKY MOUNTAIN'S SIR BOBBYBIEWER TERRIERMPROGRESSIVE RETINAL ATROPHYBYT-PRA4/42M-PICLEAR/NORMAL
TS29560801ROCKY MOUNTAIN'S SIR BOBBYBIEWER TERRIERMDEGENERATIVE MYELOPATHYBYT-DM4/42M-PICLEAR/NORMAL
TS29560801ROCKY MOUNTAIN'S SIR BOBBYBIEWER TERRIERMHYPERURICOSURIABYT-HU4/42M-PICLEAR/NORMAL
TS38796501ROCKY MOUNTAIN'S SIR GUNNER MANBIEWER TERRIERMHYPERURICOSURIABYT-HU7/10M-PICLEAR/NORMAL
TS38796501ROCKY MOUNTAIN'S SIR GUNNER MANBIEWER TERRIERMEYESBYT-EYE11/8M-VPINORMAL
TS38796501ROCKY MOUNTAIN'S SIR GUNNER MANBIEWER TERRIERMPATELLABYT-PA185/30M/P-VPINORMAL
TS38796501ROCKY MOUNTAIN'S SIR GUNNER MANBIEWER TERRIERMDEGENERATIVE MYELOPATHYBYT-DM7/10M-PI-CARCARRIER
TS38796501ROCKY MOUNTAIN'S SIR GUNNER MANBIEWER TERRIERMPROGRESSIVE RETINAL ATROPHYBYT-PRA15/10M-PI-CARCARRIER
TS38796501ROCKY MOUNTAIN'S SIR GUNNER MANBIEWER TERRIERMPRIMARY LENS LUXATIONBYT-PLL7/10M-PICLEAR/NORMAL
TS40727101ROCKY MOUNTAIN'S SIR REMINGTON JR.BIEWER TERRIERMEYESBYT-EYE12/7M-VPINORMAL
TS40727101ROCKY MOUNTAIN'S SIR REMINGTON JR.BIEWER TERRIERMPATELLABYT-PA215/28M/P-VPINORMAL
TS40727102ROCKY MOUNTAIN'S SIR ROMEOBIEWER TERRIERMEYESBYT-EYE13/7M-VPINORMAL
TS32400201ROCKY MOUNTAIN'S SIR VAREKBIEWER TERRIERMPATELLABYT-PA229/47M/P-VPINORMAL
TS43443002ROCKY MOUNTAIN'S SIR ZANDERBIEWER TERRIERMPRIMARY LENS LUXATIONBYT-PLL116/14M-PICLEAR/NORMAL
TS43443002ROCKY MOUNTAIN'S SIR ZANDERBIEWER TERRIERMPROGRESSIVE RETINAL ATROPHYBYT-PRA116/14M-PICLEAR/NORMAL
TS43443002ROCKY MOUNTAIN'S SIR ZANDERBIEWER TERRIERMDEGENERATIVE MYELOPATHYBYT-DM92/14M-PICLEAR/NORMAL
TS43443002ROCKY MOUNTAIN'S SIR ZANDERBIEWER TERRIERMHYPERURICOSURIABYT-HU74/14M-PICLEAR/NORMAL
TS43443001ROCKY MOUNTAIN'S SIR ZODIACBIEWER TERRIERMEYESBYT-EYE36/4M-VPINORMAL
TS29597901ROCKY MOUNTAINS'S MS ZARABIEWER TERRIERFDEGENERATIVE MYELOPATHYBYT-DM8/49F-PICLEAR/NORMAL
TS29597901ROCKY MOUNTAINS'S MS ZARABIEWER TERRIERFHYPERURICOSURIABYT-HU8/49F-PICLEAR/NORMAL
TS29597901ROCKY MOUNTAINS'S MS ZARABIEWER TERRIERFPROGRESSIVE RETINAL ATROPHYBYT-PRA8/49F-PICLEAR/NORMAL
TS29597901ROCKY MOUNTAINS'S MS ZARABIEWER TERRIERFPRIMARY LENS LUXATIONBYT-PLL8/49F-PICLEAR/NORMAL

Lateral Luxation in Toy Breeds

The patella, or kneecap, is part of the stifle joint (knee). In patellar luxation, the kneecap luxates, or pops out of place, either in a medial or lateral position. Lateral luxation in small breeds is most often seen late in the animal’s life, from 5 to 8 years of age. The heritability is unknown. Skeletal abnormalities are relatively minor in this syndrome, which seems to represent a breakdown in soft tissue in response to, as yet, obscure skeletal derangement. Thus, most lateral luxations are grades 1 and 2, and the bony changes are similar but mirrored to those described for medial luxation.
In mature animals, signs may develop rapidly and may be associated with minor trauma or strenuous activity. A knock-knee or genu valgum stance, sometimes described as seal-like, is characteristic. Sudden bilateral luxation may render the animal unable to stand and so simulate neurological disease. Physical examination is as described for medial luxation.

Patellar Luxation Grades

The Patellar Luxation Database is for dogs 12 months and over. Examinations performed on dogs less than 12 months will be treated as consultations and no OFA numbers will be assigned.

A method of classifying the degree of luxation and bony deformity is useful for diagnosis and can be applied to either medial or lateral luxations by reversing the medial-lateral directional references. The position of the patella can easily be palpated starting at the tibial tubercle and working proximally along the patellar ligament to the patella.

Grade 1: Manually the patella easily luxates at full extension of the stifle joint, but returns to the trochlea when released. No crepitation is apparent. The medial, or very occasionally, lateral deviation of the tibial crest (with lateral luxation of the patella) is only minimal, and there is a very slight rotation of the tibia. Flexion and extension of the stifle are in a straight line with no abduction of the hock.
Grade 2:  There is frequent patellar luxation, which, in some cases, becomes more or less permanent. The limb is sometimes carried, although weight-bearing routinely occurs with the stifle remaining slightly flexed. Especially under anesthesia, it is often possible to reduce the luxation by manually turning the tibia laterally, but the patella reluxates with ease when manual tension of the joint is released. As much as 30 degrees of medial tibial torsion and a slight medial deviation of the tibial crest may exist. When the patella is resting medially the hock is slightly abducted. If the condition is bilateral, more weight is shifted onto the forelimbs. Many dogs with this grade live with the condition reasonably well for many years, but the constant luxation of the patella over the medial trochlear ridge of the trochlea causes erosion of the articulating surface of the patella and also the proximal area of the medial lip. This results in crepitation becoming apparent when the patella is luxated manually.
Grade 3:  The patella is permanently luxated with torsion of the tibia and deviation of the tibial crest of between 30 degrees and 50 degrees from the cranial/caudal plane. Although the luxation is not intermittent, many animals use the limb with the stifle held in a semi-flexed position. The trochlea is very shallow or even flattened.
Grade 4:  The tibia is medially twisted and the tibial crest may show further deviation medially with the result that it lies 50 degrees to 90 degrees from the cranial/caudal plane. The patella is permanently luxated. The patella lies just above the medial condyle and space can be palpated between the patellar ligament and the distal end of the femur. The trochlea is absent or even convex. The limb is carried, or the animal moves in a crouched position, with the limb flexed.

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