Bipartite Patella Lake Oswego OR

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Jon Carper Vessely, MD
(503) 636-3130
Lake Oswego, OR
Specialties
Orthopedics
Gender
Male
Education
Medical School: Univ Of Cincinnati Coll Of Med, Cincinnati Oh 45267
Graduation Year: 1963

Data Provided By:
Steven W Black, DDS
(503) 524-0524
14795 SW Murray Scholls # 119
Lake Oswego, OR
Specialties
Orthodontics/Dentofacial Orthopedics

Data Provided By:
John Wallace Thompson
(503) 635-1604
16001 Quarry Rd
Lake Oswego, OR
Specialty
Orthopedic Surgery

Data Provided By:
Robert Keith Smith, MD
(503) 203-2096
Lake Oswego, OR
Specialties
Orthopedics
Gender
Male
Education
Medical School: Or Hlth Sci Univ Sch Of Med, Portland Or 97201
Graduation Year: 1975

Data Provided By:
Dale Van Rhoney, DDS
(503) 635-9371
440 A Ave
Lake Oswego, OR
Specialties
Orthodontics/Dentofacial Orthopedics

Data Provided By:
Stephen Fuller
(503) 635-1055
16001 Quarry Rd
Lake Oswego, OR
Specialty
Orthopedic Surgery

Data Provided By:
Terry G Dischinger, DDS
(503) 635-4439
3943 Douglas Way
Lake Oswego, OR
Specialties
Orthodontics/Dentofacial Orthopedics

Data Provided By:
Michael Raymond Marble, MD
16869 65th Ave PMB 507
Lake Oswego, OR
Specialties
Orthopedics
Gender
Male
Education
Medical School: Northwestern Univ Med Sch, Chicago Il 60611
Graduation Year: 1967

Data Provided By:
Marilyn Louise Yodlowski
(503) 635-1604
16001 Quarry Rd
Lake Oswego, OR
Specialty
Orthopedic Surgery

Data Provided By:
Stephen Fuller, MD FACS
(503) 635-1055
16001 Quarry Rd
Lake Oswego, OR
Gender
Male
Education
Medical School: National(dublin)
Graduation Year: 1968

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Bipartite Patella

A Patient's Guide to Bipartite Patella
Introduction

Bipartite patella is a congenital condition (present at birth) that occurs when the patella (kneecap) is made of two bones instead of a single bone. Normally, the two bones would fuse together as the you grow. But in bipartite patella, they remain as two separate bones. About one per cent of the population has this condition. Boys are affected much more often than girls. When this condition is discovered in adulthood it is oftentimes an “incidental finding”.

This guide will help you understand

what parts of the knee are involved how this condition develops how doctors diagnose this condition what treatment options are available Anatomy

What is the patella and what does it do?


The knee is the meeting place of two important bones in the leg, the femur (the thighbone) and the tibia (the shinbone). The patella (kneecap) is the moveable bone that sits in front of the knee. This unique bone is wrapped inside a tendon that connects the large muscles on the front of the thigh, the quadriceps muscles , to the lower leg bone.

Related Document: A Patient's Guide to Knee Anatomy

Causes

What causes this condition?

The patella starts out as a piece of fibrous cartilage. It turns into bone or ossifies as part of the growth process. Each bone has an ossification center. This is the first area of the structure to start changing into bone.

Most bones (including the patella) only have one primary ossification center. But in some cases, a second ossification center is present. Normally, these two centers of bone will fuse together during late childhood or early adolescence. If they don’t ossify together, then the two pieces of bone remain connected by fibrous or cartilage tissue. This connective tissue is called a synchondrosis .

The most common location of the second bone is the supero-lateral (upper outer) corner of the patella. But the problem can occur at the bottom of the patella or along the side of the kneecap.

Injury or direct trauma to the synchondrosis can cause a separation of this weak union leading to inflammation. Repetitive microtrauma can have the same effect. The cartilage has a limited ability to repair itself. The increased mobility between the main bone and the second ossification center further weakens the synchondrosis resulting in painful symptoms.

Symptoms

What does bipartite patella feel like?

Most of the time, there are no symptoms. Sometimes there is a bony bump or place where the bone sticks out more on one side than the other. If inflammation of the fibrous tissue between the two bones occurs, then painful symptoms develop directly over the kneecap. The pain is usually described as dull aching. There may be some swelling.

Movement of the knee can be painful, especially when bending the joint. Atrophy of the quadriceps and malalignment of the patella can lead to patellar tracking problems. Squatting, stair climbing, weight trai...

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