Karen Jones, the employee, is a 56-year-old white female from Raytown, Missouri. Ms. Jones graduated from Excelsior Springs High School in 1975. She reported having poor grades and problems in school including needing special assistance and difficulty reading. She has no vocational training or on-the-job training.
Ms. Jones has worked a variety of jobs including gas station cashier, acting as a stay at home mother, and as a file clerk as Sears. She most recently worked for Phillips 66 as a convenience store cashier from 2000 until her injury July 26, 2005. Her duties at Phillips 66 included running the cash register, ordering groceries, making concessions, cleaning bathrooms, and stocking cases of soda and other product. Ms. Jones reported that before her work injury she was picking up boxes that probably weighed 30-40 pounds (SIF Exhibit I, 18:16). Ms. Jones reported tingling in her hands and feet that slowed her down, but didn't cause her to miss work very often (SIF Exhibit I, 19:1). She reported problems lifting cases of soda when her hands were in pain.
Ms. Jones reported having pre-existing diabetes. It caused her to have some tingling in her hands and feet. Her physician never asked her to change her activities or issued any permanent restrictions because of her diabetes. The tingling she experiences does improve when she manages it with her prescription (SIF Exhibit I, 38:7). The tingling in her hands is worse now, than it was at the time of the 2005 work injury.
Ms. Jones reported having episodes of depression prior to the 2005 work injury. They did not affect her at work other than at times shortening her temper with difficult customers.
Ms. Jones sustained the primary work injury while working for Conoco Phillips 66 on July 26, 2005. She stepped onto the cashier podium, and her knee went out, causing her to fall, twisting her left knee. She caught herself on the counter before she hit the floor. She was able to complete her shift. At the time of the injury, she experienced a lot of pain and limited mobility in her knee. She reported the fall to her supervisor that night. Her sleep was immediately disrupted by the pain. She began needing to lie down during the day to manage her knee pain.
Ms. Jones was sent to OHS Comp Care on August 8, 2005 due to ongoing problems in her knee. She aggravated her knee problem on August 11, 2005 when she was at home, walking on her crutches, and her knee went out. She had an MRI on August 26, 2005 revealing an anterior cruciate ligament and medial collateral ligament sprain and evidence of degenerative change with an anterior horn tear of the medial meniscus.
Dr. Frevert recommended an arthroscopy on September 16, 2005. The surgery was delayed due to her diabetes and hypertension. She had the surgery on February 13, 2006. Dr. Frevert performed a tri-compartmental chondroplasty, partial synovectomy, partial medial meniscectomy and partial lateral meniscectomy.
Dr. Pratt also saw Ms. Jones in May 2006. She reported problems with standing and walking and was having low back pain radiating into her left leg.
Dr. Frevert issued a 25\% rating for Ms. Jones knee injury on September 20, 2006. An FCE performed September 27, 2006 and shoed significant limitations.
Ms. Jones current complaints in her knee include constant pain in and around her left knee. Standing 3-5 minutes makes the pain worse. Walking makes the pain worse. She is limited to walking 50 feet without her walker and can only walk 100 feet with her walker. Sitting and stair climbing also intensify her left knee pain. She reports her knee is instable and gives out. She cannot squat, kneel or crawl because of her knee pain. She uses a wheelchair at home and a cane or walker all other times. Her knee pain interrupts her sleep and makes her sleepy during the day causing her to need naps. She does not drive her car because the manual transmission would require her to use her left knee. She limits lifting to 7-8 pounds because of her knee pain. She has to take naps in her recliner to help with her knee pain and takes pain medication for her knee pain.